Clock Hammer Leather Replacement Tone Adjustment Complete Guide

Clock hammer leather replacement restores proper strike tone when original leather hardens over decades creating harsh metallic sound instead of pleasant mellow chime. Worn deteriorated or missing hammer leather produces weak striking or complete strike failure where hammer directly contacts gong or rod with brass creating unpleasant sharp tone lacking warmth and resonance characteristic of properly padded hammer strikes. Leather naturally hardens from repeated compression during striking plus environmental exposure to heat humidity and atmospheric contaminants causing material degradation transforming pliable resilient leather into rigid inflexible material behaving more like hardened plastic or metal defeating original acoustic dampening purpose requiring periodic replacement maintaining proper strike characteristics throughout clock service life.

Proper hammer leather replacement involves selecting appropriate leather thickness and material, preparing leather through soaking and forming techniques creating proper geometry, installing securely using friction fit threaded attachment or adhesive methods, then adjusting final tone through leather hardness modification trimming length or repositioning hammer contact point on gong achieving desired acoustic characteristics. This guide covers understanding different leather types and their acoustic properties, fabricating folded leather tips using water-diluted PVA glue creating firm yet resilient striking surface, alternative materials including trimmer line pegwood and rawhide for specific tone requirements, adjusting strike volume and tone through leather hardness modification using shellac superglue or controlled burning, and explaining relationship between hammer positioning leather hardness and resulting strike characteristics enabling clockmaker achieving owner preferences from soft barely-audible chimes to bright penetrating strikes suitable for large rooms.

Understanding Hammer Leather Function

How Leather Affects Strike Tone

Hammer leather serves dual purposes - protecting gong or rod from damage through repeated brass hammer impacts plus modifying acoustic characteristics of strike creating pleasant tone rather than harsh metallic sound. Soft leather absorbs impact energy dampening high-frequency harmonics producing mellow warm tone. Hard leather transmits more impact energy with less dampening creating brighter sharper tone with enhanced high-frequency content. Leather thickness also affects tone where thicker leather provides more dampening producing softer sound while thinner leather transmits impact more directly creating louder brighter tone. Therefore leather selection and preparation significantly affects final strike characteristics enabling customization matching owner preferences and room acoustics.

Additionally, leather condition changes over time affecting strike tone progressively. New properly prepared leather produces consistent predictable tone. However, decades of repeated compression gradually compacts leather fibers reducing resilience. Simultaneously, environmental exposure plus absorbed oils and contaminants modify leather properties. Result is progressive tone change - typically becoming brighter and harsher - as aging leather loses dampening characteristics approaching hardened state behaving more like rigid plastic than resilient leather. Eventually, severely degraded leather provides minimal acoustic benefit producing tone barely distinguishable from bare brass hammer directly striking gong.

Strike volume also relates to leather properties independent from tone quality. Soft leather absorbs substantial impact energy converting it to heat and material deformation rather than acoustic radiation. This dampening reduces strike volume potentially creating situation where chimes are barely audible in adjacent rooms. Conversely, hard leather transmits most impact energy to gong enabling maximum acoustic radiation producing loud strikes audible throughout building. Therefore, leather selection involves compromise between pleasant mellow tone from soft leather versus adequate volume from harder leather. Optimal balance depends on clock size, room acoustics, and owner preferences where some prefer loud bright strikes while others want soft subtle chimes barely audible providing time indication without dominating acoustic environment.

Leather Material Options

Various leather types provide different acoustic characteristics enabling tone customization. Sole leather - thick hard leather used for shoe soles - provides firm striking surface creating bright clear tone with good volume. This traditional choice works well for most clock applications where adequate volume and clarity are priorities. Sole leather maintains properties well over time showing minimal degradation compared to softer leathers. However, hardness may be excessive for small clocks in quiet rooms creating overly loud harsh strikes. Thickness ranges from approximately 3mm to 6mm enabling selection matching specific hammer cavity dimensions and desired tone characteristics.

Softer garment leathers including leather from old shoes, belts, or gloves provide more dampening creating mellower tone with reduced volume. These materials suit applications where subtle chimes are preferred over penetrating strikes. However, softer leathers show more rapid degradation requiring more frequent replacement compared to harder sole leather. Additionally, installation can be challenging - soft thin leather may not provide adequate friction fit in hammer cavities requiring adhesive retention. Some clockmakers modify soft leather properties through treatment with diluted PVA glue during forming process creating partially hardened leather combining softness advantages with improved durability and retention characteristics.

Round hammer leather - commercially available pre-formed leather in various diameters - provides convenient option for threaded hammer applications. However, reports suggest commercial round leather sometimes produces disappointing tone - often too soft creating weak strike or conversely too hard from treatment during manufacturing. Additionally, diameter matching between commercial leather and hammer threads can be problematic. Custom-fabricated leather from flat stock enables better diameter control plus tone customization through material selection and forming technique. Therefore, many experienced clockmakers prefer fabricating custom hammer leather rather than relying on commercial round leather despite additional effort required.

Alternative Striking Materials

Non-leather alternatives provide options when specific tone characteristics are desired or when leather proves unsatisfactory. Plastic trimmer line - string used in weed trimming equipment - creates bright clear tone with excellent durability. Installation is simple - fold line double, squeeze flattened end with pliers, insert closed end into hammer cavity, trim protruding ends. Folded line wedges securely without adhesive. Tone is typically brighter than leather creating clear penetrating strikes suitable for loud chime applications. However, plastic produces less warm or mellow character compared to leather potentially creating harsh industrial tone unacceptable to some owners.

Pegwood - tapered wooden dowels sold for pivot hole cleaning - provides hard striking surface creating extremely bright loud tone. Installation requires trimming pegwood to proper diameter fitting hammer cavity using friction fit. Wooden strike is even brighter than plastic producing maximum volume with pronounced high-frequency content. This suits applications where loudest possible chimes are desired - perhaps grandfather clock in large room requiring strikes audible throughout space. However, extreme brightness may be excessive for most applications creating unpleasantly harsh metallic tone. Therefore pegwood is specialized solution for specific requirements rather than general-purpose hammer material.

Rawhide offers middle ground between soft leather and harder alternatives. Natural rawhide before tanning produces moderately firm yet resilient striking surface. Tone is brighter than soft leather but less harsh than plastic or wood. However, finding appropriate thickness rawhide can be challenging. Some clockmakers roughen rawhide surface using coarse sandpaper increasing friction retention in hammer cavity plus potentially modifying acoustic properties through surface texture changes. Rawhide durability is excellent maintaining properties over extended periods though installation may require adhesive depending on fit tolerance. This material suits applications where leather is too soft but alternatives are too harsh requiring compromise solution balancing multiple acoustic considerations.

Fabricating Folded Leather Hammer Tips

Material Selection and Preparation

Begin fabricating custom hammer leather by selecting appropriate source material. Old shoe tongues provide excellent leather - proper thickness approximately 2-3mm plus already broken-in showing good flexibility. Alternatively, discarded leather belts, old baseball gloves, or leather garment components provide usable material. Key characteristics are appropriate thickness - typically 2-4mm before folding - plus reasonable flexibility enabling forming during preparation. Avoid extremely thin leather lacking body after folding or excessively thick leather creating bulky tips difficult installing in hammer cavities. Additionally, verify leather is reasonably clean without excessive contamination requiring extensive cleaning before use.

Cut leather strips slightly wider than required final diameter - approximately 1.5 times final diameter enables adequate folding overlap. Length should provide enough material for multiple hammer tips - perhaps 6 to 12 inches depending on number of hammers requiring service. Cutting can use sharp scissors, knife, or leather shears. Clean cuts with straight edges simplify subsequent forming operations. After cutting, inspect edges removing any fraying or irregularities using sandpaper or sharp blade. Smooth edges improve final appearance plus prevent leather separation during installation or operation.

Prepare forming mixture combining water with small amount of PVA glue - commonly known as white glue or Elmer's Glue. Ratio is approximately 4 parts water to 1 part glue creating diluted mixture. This provides enough adhesive binding leather layers during forming while maintaining flexibility preventing excessive hardening. Stronger mixtures create overly rigid leather producing harsh tone. Weaker mixtures may not adequately bind layers. Experiment with ratios adjusting for specific acoustic preferences - more glue creates harder leather producing brighter tone while less glue maintains softer characteristics creating mellower sound. Mix thoroughly ensuring uniform consistency without lumps or separated phases.

Forming and Drying Process

Soak cut leather strips in prepared PVA-water mixture for approximately 5-10 minutes enabling complete saturation. Leather should absorb mixture throughout thickness showing uniform darkening indicating proper penetration. Longer soaking doesn't significantly improve results while potentially causing excessive water absorption complicating subsequent forming. After soaking, remove leather allowing excess mixture to drain. Gentle squeezing removes additional liquid but avoid over-squeezing removing too much mixture preventing adequate binding during drying.

Fold soaked leather strip lengthwise creating double thickness with edges approximately aligned. This doubling provides adequate hardness and resilience for most applications. Some clockmakers create triple-fold for extremely hard leather though this is rarely necessary. Position folded leather in split stake - specialized forming tool with V-shaped groove - or improvise using V-block or similar fixture. Compress folded leather firmly using vise or clamps achieving tight fold with minimal gap between layers. Compression duration is typically 10-30 minutes depending on leather thickness and mixture saturation. Inadequate compression creates loose fold with air gaps reducing binding quality. Excessive compression may damage leather or displace too much mixture preventing adequate adhesive action.

After initial compression, remove formed leather and allow complete drying. Drying time varies with temperature and humidity - typically 24-48 hours achieving completely dry condition. Some clockmakers use gentle heat from lamp or warm location accelerating drying but avoid excessive heat potentially damaging leather or creating uneven drying producing warped irregular tips. After complete drying, formed leather shows firm tubular shape with layers well bonded. Tube should maintain shape without separating indicating successful forming. If layers separate or leather shows insufficient firmness, repeat process adjusting mixture ratio or compression pressure achieving desired characteristics.

Installation and Final Shaping

Cut dried formed leather to appropriate length for specific hammer application. Typical length extends approximately 1/8 to 3/16 inch beyond hammer tip providing adequate striking surface without excessive overhang. However, initial cut should be slightly long - perhaps 1/4 inch - enabling subsequent trimming after installation during tone adjustment. Cutting can use sharp scissors, knife, or diagonal cutters. Clean perpendicular cuts simplify final shaping. After cutting, test fit in hammer cavity verifying proper diameter. Leather should insert with firm pressure creating friction fit without requiring excessive force risking damage to hammer or leather.

For friction-fit installation, apply small amount of appropriate adhesive - cyanoacrylate (superglue) or epoxy work well - to leather exterior or hammer cavity interior. Adhesive quantity should be minimal - just enough ensuring retention without creating excessive buildup affecting acoustic properties. Too much adhesive may harden leather end excessively creating harsh tone. After applying adhesive, immediately insert leather into hammer cavity pushing firmly until fully seated. Wipe excess adhesive preventing unsightly appearance. Allow adhesive to cure per manufacturer recommendations before handling or adjusting. For threaded hammers, thread leather onto screw using hand pressure or pliers if needed. Taper leather end slightly using sandpaper or file easing thread engagement. Thread carefully preventing cross-threading damaging threads or leather.

Final shaping uses sandpaper or file trimming leather to optimal length and contour. Begin with leather extended approximately 3/16 inch beyond hammer testing strike tone. If tone is too soft or volume inadequate, trim leather progressively shorter testing after each reduction. Removing material hardens strike creating brighter louder tone. Continue trimming until desired characteristics are achieved. However, avoid excessive trimming reducing leather below approximately 1/16 inch extension - this may cause premature leather failure or inadequate acoustic dampening. After achieving proper length, round leather end using fine sandpaper creating smooth contour. Rounded end provides consistent gong contact reducing tendency for hard corners creating harsh tone or causing premature leather wear from concentrated stress at sharp edges.

Adjusting Strike Tone and Volume

Leather Hardness Modification

Sometimes installed leather produces tone that is too soft requiring hardness increase for adequate volume or clarity. Several techniques modify leather properties increasing firmness. Simplest approach applies thin cyanoacrylate glue (superglue) to leather surface allowing capillary action drawing adhesive into leather structure. Use thin viscosity superglue - not gel - ensuring proper penetration. Apply single drop allowing it to spread and absorb. Excessive application creates hard crusty surface producing harsh tone. After application, allow complete curing - typically 5-10 minutes - before testing. Single treatment usually provides modest hardness increase. Multiple treatments create progressively harder leather enabling fine tone adjustment through incremental modifications.

Alternative hardening uses shellac - traditional wood finishing material. Apply thin shellac coat to leather using small brush. Shellac penetrates moderately providing firmness without excessive hardening. Advantage compared to superglue is easier control plus less concerning fumes. However, shellac requires longer drying time - several hours - before testing. Additionally, shellac may require multiple coats achieving desired hardness compared to single superglue application. Some clockmakers prefer shellac for adjustable control enabling precise tone customization through progressive applications testing between coats rather than committing to potentially excessive hardening from single aggressive treatment.

Traditional hardening technique uses controlled burning. Hold leather tip in flame - match or lighter - for few seconds allowing surface charring without complete combustion. Burning creates hard carbonized surface layer dramatically increasing firmness. This aggressive approach produces maximum hardness enabling brightest loudest tone. However, technique risks damaging hammer through heat transfer potentially leaving unsightly scorch marks. Additionally, excessive burning consumes leather requiring replacement rather than just hardening. Therefore, burning suits applications requiring maximum brightness but demands careful technique preventing damage. Modern alternatives using adhesives generally provide adequate control with less risk making burning less common despite effectiveness when properly executed.

Hammer Positioning and Strike Point

Beyond leather hardness, hammer positioning significantly affects tone quality and volume. Gongs and chime rods have "sweet spot" - optimal strike location producing best tone - typically located approximately two-thirds of distance from gong base toward spiral or rod suspension point. Striking at sweet spot maximizes fundamental frequency excitation creating clear pleasant tone with good volume. Striking too close to base emphasizes low frequencies potentially creating muddy tone lacking clarity. Striking too close to spiral or suspension point emphasizes high frequencies creating bright potentially harsh tone plus risks damaging gong through excessive stress at weak mounting area.

Adjust hammer position by carefully bending hammer wire. Small position changes significantly affect tone. Move hammer up or down along gong observing tone changes. Test throughout striking range finding location producing optimal acoustic characteristics. Some trial and error is inevitable - each clock exhibits unique acoustic properties requiring individual optimization. After finding optimal position, verify hammer strikes consistently without occasionally missing or creating glancing blows from improper alignment. Additionally, ensure hammer returns fully to rest position after striking. Binding or incomplete return causes hammer drag against gong dampening vibration or creating double strikes from hammer remaining in contact during subsequent rotation.

For multiple hammer applications - Westminster or other multi-gong chimes - systematic adjustment ensures uniform tone quality across all hammers. Adjust each hammer individually finding optimal position for specific gong then verify collective harmony. Sometimes individual optimization creates inconsistent overall sound requiring compromise where each hammer is slightly suboptimal but collective result achieves pleasing balanced chime. This requires developed ear plus willingness to iterate through multiple adjustment cycles progressively approaching optimal configuration. Documentation helps - photograph hammer positions or make notes describing adjustments - enabling return to previous configurations if adjustments produce worse results than starting condition.

When Strike Is Too Loud

Opposite problem occurs when strikes are excessively loud creating annoying penetrating chimes inappropriate for quiet environment. Several approaches reduce volume while maintaining reasonable tone quality. Simplest is replacing hard leather with softer material. However, this requires complete hammer re-service potentially time-consuming for multiple hammer applications. Alternative softens existing leather through physical modification. Pierce leather surface multiple times using pin or needle creating tiny perforations. These holes interrupt sound transmission reducing volume. Technique is borrowed from piano technology where similar approach softens hard hammer felts. However, excessive perforation may compromise leather structural integrity requiring eventual replacement.

Another volume reduction approach slightly reduces hammer lift decreasing strike energy. Carefully bend hammer wire reducing distance hammer travels before striking gong. Less travel means less velocity at impact producing softer strike. However, excessive reduction may create weak inconsistent strikes particularly when mainspring power varies through winding cycle. Additionally, reduced lift may cause timing problems if hammer doesn't clear gong adequately during return potentially creating drag affecting strike train operation. Therefore, hammer lift reduction requires careful balance achieving adequate volume reduction without compromising reliable operation.

For extreme volume reduction - perhaps crystal regulator in bedroom requiring barely audible chimes - consider temporary dampening rather than permanent modification. Soft rubber or foam pad positioned between hammer and gong mutes strike creating nearly silent operation. Some clockmakers use glass shop foam pads with adhesive backing enabling temporary installation and removal. This preserves original hammer configuration allowing restoration to normal volume when clock relocates to different environment requiring louder chimes. However, complete muting may disappoint owner expecting subtle chimes rather than silence. Therefore, discuss expectations clarifying whether minimal volume or complete silence is goal before implementing extreme dampening measures potentially disappointing owner who wanted different result.

FAQs

What leather should I use for clock hammer tips?

Use sole leather from shoe soles providing firm striking surface creating bright clear tone with good volume where thickness ranges from 3mm to 6mm enabling selection matching specific hammer cavity dimensions. Sole leather maintains properties well over time showing minimal degradation compared to softer leathers making this traditional choice working well for most clock applications. Alternative softer garment leathers including leather from old shoes belts or gloves provide more dampening creating mellower tone with reduced volume suiting applications where subtle chimes are preferred. However softer leathers show more rapid degradation requiring more frequent replacement plus installation can be challenging where soft thin leather may not provide adequate friction fit requiring adhesive retention. Some clockmakers modify soft leather properties through treatment with diluted PVA glue during forming process creating partially hardened leather combining softness advantages with improved durability. Custom-fabricated leather from flat stock enables better diameter control plus tone customization through material selection and forming technique making many experienced clockmakers prefer fabricating custom hammer leather rather than relying on commercial round leather despite additional effort required. Key characteristics are appropriate thickness typically 2-4mm before folding plus reasonable flexibility enabling forming during preparation where material sources include old shoe tongues discarded leather belts old baseball gloves or leather garment components providing usable material avoiding need purchasing specialty leather.

How do I make folded leather hammer tips?

Make folded leather hammer tips by cutting leather strips approximately 1.5 times final diameter from source material 2-4mm thick then soaking in prepared mixture of 4 parts water to 1 part PVA glue for 5-10 minutes enabling complete saturation. After soaking remove leather allowing excess mixture to drain then fold lengthwise creating double thickness with edges aligned. Position folded leather in split stake or V-block fixture then compress firmly using vise achieving tight fold with minimal gap between layers where compression duration is typically 10-30 minutes. After initial compression remove formed leather and allow complete drying typically 24-48 hours until completely dry showing firm tubular shape with layers well bonded. Cut dried formed leather to appropriate length extending approximately 1/8 to 3/16 inch beyond hammer tip providing adequate striking surface then test fit in hammer cavity where leather should insert with firm pressure creating friction fit. Apply minimal adhesive to leather exterior or hammer cavity interior then insert leather pushing firmly until fully seated. Final shaping uses sandpaper trimming leather to optimal length testing strike tone progressively where removing material hardens strike creating brighter louder tone. After achieving proper length round leather end using fine sandpaper creating smooth contour. Mixture ratio affects final hardness where more glue creates harder leather producing brighter tone while less glue maintains softer characteristics creating mellower sound enabling customization matching owner preferences.

How do I harden soft clock hammer leather?

Harden soft clock hammer leather by applying thin cyanoacrylate glue superglue to leather surface allowing capillary action drawing adhesive into leather structure where you use thin viscosity superglue not gel ensuring proper penetration. Apply single drop allowing it to spread and absorb avoiding excessive application creating hard crusty surface then allow complete curing typically 5-10 minutes before testing. Single treatment provides modest hardness increase while multiple treatments create progressively harder leather enabling fine tone adjustment. Alternative hardening uses shellac where you apply thin coat to leather using small brush allowing several hours drying time. Shellac penetrates moderately providing firmness without excessive hardening with advantage of easier control plus less concerning fumes compared to superglue though requiring longer drying time and potentially multiple coats achieving desired hardness. Traditional technique uses controlled burning holding leather tip in flame for few seconds allowing surface charring without complete combustion creating hard carbonized surface layer dramatically increasing firmness producing maximum hardness enabling brightest loudest tone. However burning risks damaging hammer through heat transfer potentially leaving scorch marks plus excessive burning consumes leather requiring replacement making modern adhesive alternatives generally provide adequate control with less risk. Wood hardener products also work applying thin coat allowing penetration before drying creating moderately hard surface suitable for most applications.

What are alternatives to leather for hammer tips?

Alternatives to leather for hammer tips include plastic trimmer line from weed trimming equipment creating bright clear tone with excellent durability where installation involves folding line double squeezing flattened end with pliers inserting closed end into hammer cavity then trimming protruding ends. Folded line wedges securely without adhesive producing tone typically brighter than leather creating clear penetrating strikes though plastic produces less warm character potentially creating harsh industrial tone. Pegwood provides hard striking surface creating extremely bright loud tone where installation requires trimming pegwood to proper diameter fitting hammer cavity using friction fit producing maximum volume with pronounced high-frequency content suiting applications requiring loudest possible chimes though extreme brightness may be excessive creating unpleasantly harsh metallic tone. Rawhide offers middle ground between soft leather and harder alternatives where natural rawhide before tanning produces moderately firm yet resilient striking surface creating tone brighter than soft leather but less harsh than plastic or wood. However finding appropriate thickness rawhide can be challenging where some clockmakers roughen rawhide surface using coarse sandpaper increasing friction retention. Baby bottle nipples work for temporary strike muting where cutting tips off and fitting over hammer heads creates soft sound plus provides removability enabling restoration to normal leather when desired. Each alternative provides specific acoustic characteristics enabling tone customization matching owner preferences from soft subtle chimes to bright penetrating strikes.

Why does my clock strike too loudly?

Clock striking too loudly results from hard hammer leather or direct brass contact where original soft leather has hardened over decades from repeated compression plus environmental exposure creating rigid inflexible material transmitting maximum impact energy to gong producing penetrating strikes. Replace hard leather with softer material providing more dampening creating mellower tone with reduced volume though this requires complete hammer re-service potentially time-consuming. Alternative softens existing leather through physical modification piercing leather surface multiple times using pin creating tiny perforations interrupting sound transmission reducing volume using technique borrowed from piano technology though excessive perforation may compromise structural integrity. Another approach slightly reduces hammer lift by carefully bending hammer wire reducing distance hammer travels before striking gong creating less velocity at impact producing softer strike. However excessive reduction may create weak inconsistent strikes or timing problems if hammer doesn't clear gong adequately during return. For extreme volume reduction consider temporary dampening using soft rubber or foam pad positioned between hammer and gong muting strike creating nearly silent operation where glass shop foam pads with adhesive backing enable temporary installation preserving original hammer configuration. Additionally verify hammer strikes at optimal gong location approximately two-thirds distance from base toward spiral where striking closer to base emphasizes low frequencies while striking near spiral creates harsh high frequencies affecting both tone quality and perceived volume.

How often should hammer leather be replaced?

Hammer leather should be replaced when producing harsh tone lacking warmth indicating hardening from decades of compression plus environmental exposure or when showing visible deterioration including cracking separation or complete absence. Typical service life is 20-40 years depending on strike frequency environmental conditions and original leather quality where clocks striking hourly plus quarters experience more rapid leather degradation compared to hour-only striking. Additionally environmental factors affect longevity where high humidity promotes leather degradation while dry conditions may cause brittleness and temperature extremes accelerate aging. Inspect hammer leather during regular movement service examining for hardness loss of resilience or visible damage requiring replacement. Preventive replacement during comprehensive service makes economic sense even when leather appears marginally serviceable because labor accessing hammers represents substantial service component making simultaneous leather replacement cost-effective compared to separate future service addressing only hammer leather. Some owners prefer maintaining original components accepting compromised tone rather than replacing functional though degraded leather preserving authenticity particularly in collectible clocks where originality affects value. However most service situations benefit from leather replacement restoring proper acoustic characteristics enhancing clock enjoyment justifying modest additional expense during regular maintenance. Document leather condition through photographs enabling future comparison tracking degradation rate guiding replacement interval recommendations for subsequent service cycles.

Where should hammer strike gong for best tone?

Hammer should strike gong at sweet spot located approximately two-thirds distance from gong base toward spiral maximizing fundamental frequency excitation creating clear pleasant tone with good volume. Striking at sweet spot produces optimal balance between low and high frequency components avoiding muddy tone from striking too close to base or harsh tone from striking near spiral. Adjust hammer position by carefully bending hammer wire moving hammer up or down along gong observing tone changes where small position changes significantly affect acoustic characteristics. Test throughout striking range finding location producing optimal tone quality plus adequate volume matching room acoustics and owner preferences. After finding optimal position verify hammer strikes consistently without occasionally missing or creating glancing blows from improper alignment plus ensure hammer returns fully to rest position after striking where binding or incomplete return causes hammer drag against gong dampening vibration. For multiple hammer applications like Westminster chimes adjust each hammer individually finding optimal position for specific gong then verify collective harmony where sometimes individual optimization creates inconsistent overall sound requiring compromise achieving pleasing balanced chime. Additionally consider relationship between strike point and leather hardness where harder leather tolerates less optimal positioning producing acceptable tone while softer leather requires more precise positioning achieving adequate volume and clarity making systematic adjustment essential achieving best possible acoustic results from given hammer leather configuration.