{"product_id":"large-guitar-soundboard-back-crack-repair-support-jack-magnetic-bracing-repair-tool-for-acoustic-wood-guitar-restoration","title":"Acoustic Guitar Soundboard Repair Jack — Magnetic Bracing Support Tool","description":"\u003cp\u003eA precise repair demands a precise tool. This soundboard and back crack repair support jack is designed for luthiers and guitar enthusiasts who take restoration seriously — a height-adjustable, groove-fitted jack that holds bracing firmly in place while glue sets, so loose sound beams and small wooden blocks are reattached cleanly and without slip. Available in Black and White, it is a compact but essential addition to any acoustic guitar repair kit.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:16px 0\"\u003e\n  \u003cspan style=\"background:#f5f0eb;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600\"\u003eMagnetic Bracing Support\u003c\/span\u003e\n  \u003cspan style=\"background:#f5f0eb;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600\"\u003eHeight-Adjustable Jack\u003c\/span\u003e\n  \u003cspan style=\"background:#f5f0eb;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600\"\u003eGroove-Fit Design\u003c\/span\u003e\n  \u003cspan style=\"background:#f5f0eb;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600\"\u003eAcoustic Guitar Repair\u003c\/span\u003e\n  \u003cspan style=\"background:#f5f0eb;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600\"\u003eBlack \u0026amp; White Variants\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdetails open style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eSize Guide \u0026amp; Compatibility\u003c\/summary\u003e\n  \u003cdiv style=\"margin-top:14px;overflow-x:auto\"\u003e\n    \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background:#f5f0eb\"\u003e\n          \u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #e0d8ce\"\u003eSize\u003c\/th\u003e\n          \u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #e0d8ce\"\u003eMetric\u003c\/th\u003e\n          \u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #e0d8ce\"\u003eImperial\u003c\/th\u003e\n          \u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #e0d8ce\"\u003eBest For\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding:8px 10px;border:1px solid #e0d8ce\"\u003eLarge\u003c\/td\u003e\n          \u003ctd style=\"padding:8px 10px;border:1px solid #e0d8ce\"\u003eAdjustable height via elastic screw nut; fits standard full-size acoustic body depth\u003c\/td\u003e\n          \u003ctd style=\"padding:8px 10px;border:1px solid #e0d8ce\"\u003eStandard full-size acoustic guitars (body depth approx. 4–5 in)\u003c\/td\u003e\n          \u003ctd style=\"padding:8px 10px;border:1px solid #e0d8ce\"\u003eFull-size acoustic guitars; dreadnought, concert, auditorium body styles\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003cp style=\"font-size:12px;color:#888;margin-top:8px\"\u003eExact fit will depend on your guitar body depth. Sold individually — one jack per order.\u003c\/p\u003e\n    \u003cdiv style=\"border-left:4px solid #ffc107;background:#fffdf0;margin:16px 0;padding:12px 16px;border-radius:0 8px 8px 0;color:#5a4a00\"\u003e\n      \u003cstrong\u003eNot Best For\u003c\/strong\u003e\n      \u003cul style=\"margin:8px 0 0 0;padding-left:18px\"\u003e\n        \u003cli\u003e3\/4 or travel-size acoustic guitars — the large format may not fit the shallower body depth\u003c\/li\u003e\n        \u003cli\u003eElectric or semi-hollow guitars — this tool is designed specifically for acoustic instrument bracing repair\u003c\/li\u003e\n        \u003cli\u003eClassical guitars with unusually narrow internal depth — verify your body dimensions before ordering\u003c\/li\u003e\n        \u003cli\u003eProfessional luthier workshops requiring multiple jacks simultaneously — sold individually\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails open style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eProduct Details\u003c\/summary\u003e\n  \u003cul style=\"margin-top:14px;padding-left:18px;line-height:1.8\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rigid structural body with magnetic bracing mechanism\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFinish \/ Colour:\u003c\/strong\u003e Available in Black or White\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Luthier repair jack — large format\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHeight Adjustment:\u003c\/strong\u003e Elastic screw nut for effortless height calibration\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGroove Design:\u003c\/strong\u003e Grooves on both top and bottom for a secure, stable fit against the instrument body\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Full-size acoustic wood guitars — dreadnought, concert, auditorium, and similar body styles\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e No permanent installation; tool is positioned, adjusted, and removed after the repair adhesive has set\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × repair support jack\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails open style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eWhy This Tool\u003c\/summary\u003e\n  \u003cul style=\"margin-top:14px;padding-left:18px;line-height:1.8\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision where it matters:\u003c\/strong\u003e The height-adjustable elastic screw nut lets you dial in exactly the right pressure against the brace — no guesswork, no over-compression that could damage the top or back.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMagnetic bracing mechanism:\u003c\/strong\u003e The integrated magnetic support holds the brace firmly in position while the adhesive sets, keeping your repair aligned without requiring a second set of hands.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSecure groove fit:\u003c\/strong\u003e Grooves on both the top and bottom faces grip the instrument surfaces cleanly, eliminating the slipping or rocking that makeshift solutions are prone to.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimple, repeatable process:\u003c\/strong\u003e Apply adhesive, position the jack, adjust height, wait for the glue to cure, remove — a clean workflow that produces professional results even for the home restorer.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt for acoustic wood instruments:\u003c\/strong\u003e Designed specifically around the internal geometry of acoustic guitar bodies, this is a tool that understands the instrument it serves.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails open style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eCare \u0026amp; Maintenance\u003c\/summary\u003e\n  \u003cul style=\"margin-top:14px;padding-left:18px;line-height:1.8\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCleaning:\u003c\/strong\u003e Wipe all surfaces clean of adhesive residue after each use with a dry or slightly damp cloth. Do not allow glue to cure on the jack surfaces.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e Immersion in water or solvents that could compromise the structural integrity or magnetic components.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScrew nut:\u003c\/strong\u003e Keep the elastic screw nut free of debris; turn it smoothly through its full range periodically to maintain easy height adjustment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Store in a dry environment away from strong magnetic fields that could affect the bracing mechanism over time.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePeriodic checks:\u003c\/strong\u003e Inspect the groove surfaces before each use to confirm they are clean and free of cured adhesive, which could affect grip stability during a repair.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails open style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eFAQ\u003c\/summary\u003e\n  \u003cdiv style=\"margin-top:14px\"\u003e\n    \u003cp\u003e\u003cstrong\u003eWhat type of guitars is this compatible with?\u003c\/strong\u003e\u003cbr\u003eThis jack is designed for full-size acoustic wood guitars — dreadnought, concert, auditorium, and similar body styles where the internal depth accommodates the large format. It is not suited to electric, semi-hollow, or travel-size guitars.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eDo I need any other tools to complete a repair?\u003c\/strong\u003e\u003cbr\u003eYou will need appropriate wood adhesive for the specific repair (e.g. hide glue or PVA wood glue), clamps or a second jack if addressing a long brace, and standard luthier tools for accessing the guitar interior. The jack itself handles the bracing support function.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eHow does the height adjustment work?\u003c\/strong\u003e\u003cbr\u003eAn elastic screw nut on the jack body allows smooth, tool-free height adjustment. Turn to increase or decrease the jack's height until it makes firm contact with the brace, applying even pressure without over-compressing the instrument.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eIs the magnetic function strong enough to hold during a repair?\u003c\/strong\u003e\u003cbr\u003eThe magnetic bracing mechanism is designed to maintain alignment throughout the glue curing period. For heavy structural repairs or unusually wide braces, we recommend testing fit before applying adhesive to confirm the jack provides sufficient coverage.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eIs this sold individually or as a set?\u003c\/strong\u003e\u003cbr\u003eSold individually — one jack per order. If your repair requires multiple jack positions simultaneously, order accordingly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #e8e0d8;border-radius:8px;padding:16px;margin:12px 0\"\u003e\n  \u003csummary style=\"font-weight:700;font-size:1rem;letter-spacing:.04em;text-transform:uppercase;cursor:pointer\"\u003eShipping \u0026amp; Handling\u003c\/summary\u003e\n  \u003cdiv style=\"margin-top:14px;line-height:1.8\"\u003e\n    \u003cp\u003eYour repair jack is carefully packaged to arrive in perfect working condition. We ship internationally with tracking as standard.\u003c\/p\u003e\n    \u003cul style=\"padding-left:18px\"\u003e\n      \u003cli\u003eEstimated delivery: 7–21 business days depending on destination\u003c\/li\u003e\n      \u003cli\u003eFull tracking provided at dispatch\u003c\/li\u003e\n      \u003cli\u003eIf your item arrives damaged, notify us within 24 hours with clear photos so we can resolve it promptly\u003c\/li\u003e\n      \u003cli\u003ePlease inspect the item before first use\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eVAT and customs duties are prepaid on most standard-sized orders.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp style=\"font-size:11px;color:#aaa;margin-top:24px\"\u003eDimensions and height range are approximate; minor tolerance variations are normal and do not constitute a fault. Colour appearance may vary slightly depending on screen calibration. Sold individually — one jack per order. Compatibility is with full-size acoustic wood guitars; verify your guitar body depth before ordering. This tool is intended for use during adhesive-based bracing repairs only and should be removed once the adhesive has fully cured.\u003c\/p\u003e","brand":"Très Elite","offers":[{"title":"Black","offer_id":51325310369828,"sku":"12000060139002461","price":110.49,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":51325310402596,"sku":"12000060139002460","price":110.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2281\/7497\/files\/b8edb462-8e58-4ed1-b58c-b3bfe8da45b2.png?v=1788266091","url":"https:\/\/www.treselite.com\/ko\/products\/large-guitar-soundboard-back-crack-repair-support-jack-magnetic-bracing-repair-tool-for-acoustic-wood-guitar-restoration","provider":"Très Elite","version":"1.0","type":"link"}