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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Pneumatic hand tool to break through materials</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Air_hammer_FK724a.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Air_hammer_FK724a.jpg/220px-Air_hammer_FK724a.jpg" decoding="async" width="220" height="116" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/44/Air_hammer_FK724a.jpg/330px-Air_hammer_FK724a.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/44/Air_hammer_FK724a.jpg/440px-Air_hammer_FK724a.jpg 2x" data-file-width="2512" data-file-height="1324" /></a><figcaption>A German pistol-type air hammer</figcaption></figure> <p>An <b>air hammer</b>, also known as an <b>air chisel</b>, is a <a href="/wiki/Pneumatic" class="mw-redirect" title="Pneumatic">pneumatic</a> <a href="/wiki/Hand_tool" title="Hand tool">hand tool</a> used to <a href="/wiki/Stone_carving" title="Stone carving">carve</a> in <a href="/wiki/Dimension_stone" title="Dimension stone">stone</a>, and to break or cut <a href="/wiki/Metal" title="Metal">metal</a> objects apart. It is designed to accept different <a href="/wiki/Tool" title="Tool">tools</a> depending on the required function.<sup id="cite_ref-dixon_1-0" class="reference"><a href="#cite_note-dixon-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Tools">Tools</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=1" title="Edit section: Tools"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The following are various tools that can be used in an air hammer:<sup id="cite_ref-dixon_1-1" class="reference"><a href="#cite_note-dixon-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <dl><dt>Universal joint and tie-rod tool</dt> <dd>Used to separate <a href="/wiki/Universal_joint" title="Universal joint">universal joints</a> and <a href="/wiki/Tie-rod" class="mw-redirect" title="Tie-rod">tie-rod</a> ends.</dd> <dt>Ball joint separator</dt> <dd>Used to separate <a href="/wiki/Ball_joint" title="Ball joint">ball joints</a>.</dd> <dt>Shock absorber chisel</dt> <dd>Used to break loose <a href="/wiki/Shock_absorber" title="Shock absorber">shock absorber</a> nuts.</dd> <dt>Exhaust pipe cutter</dt> <dd>Used to cut through <a href="/wiki/Exhaust_pipe" class="mw-redirect" title="Exhaust pipe">exhaust pipe</a> for disassembly.</dd> <dt>Tapered punch</dt> <dd>A general tool that can be used to free frozen nuts, insert pins, and align holes.</dd> <dt>Rubber bushing splitter</dt> <dd>Used to remove <a href="/wiki/Rubber_bushing" class="mw-redirect" title="Rubber bushing">rubber bushings</a>.</dd></dl> <div class="mw-heading mw-heading2"><h2 id="Free-standing_style">Free-standing style</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=2" title="Edit section: Free-standing style"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Free-standing air hammers are an adaptation of the hand-held version. An air hammer can stretch or shrink (shape) a variety of metals, from thin <a href="/wiki/Aircraft_aluminum" class="mw-redirect" title="Aircraft aluminum">aircraft aluminums</a>, all the way down to 10-gauge <a href="/wiki/Steel" title="Steel">steel</a>. They are also used for smoothing metal that has already been roughed, shaped or formed.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=3" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Expand_section plainlinks metadata ambox mbox-small-left ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><a href="/wiki/File:Wiki_letter_w_cropped.svg" class="mw-file-description"><img alt="[icon]" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/20px-Wiki_letter_w_cropped.svg.png" decoding="async" width="20" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/30px-Wiki_letter_w_cropped.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/40px-Wiki_letter_w_cropped.svg.png 2x" data-file-width="44" data-file-height="31" /></a></span></td><td class="mbox-text"><div class="mbox-text-span">This section <b>needs expansion</b>. You can help by <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=">adding to it</a>. <span class="date-container"><i>(<span class="date">September 2017</span>)</i></span></div></td></tr></tbody></table> <p>In the 1920s, two pneumatic devices were invented that would permanently change the way metal and stone were hammered. The pneumatic rivet gun was originally developed to set hot rivets on <a href="/wiki/Girder_bridges" class="mw-redirect" title="Girder bridges">girder bridges</a> and high steel buildings. This tool was later scaled down for <a href="/wiki/Sheet_metal" title="Sheet metal">sheet metal</a>, as the 1930s saw the advent of <a href="/wiki/Monocoque" title="Monocoque">monocoque</a> aluminum aircraft. The other new device, hitting at twice or three times the speed of the rivet gun, was the stone carver's hammer – a great blessing for smooth and rapid dressing of granite and marble. </p><p>In 1930 <a href="/w/index.php?title=F.J._Hauschild&action=edit&redlink=1" class="new" title="F.J. Hauschild (page does not exist)">F.J. Hauschild</a> adapted the original stone carver's hammer into a portable hand-held steel <a href="/wiki/Superleggera" title="Superleggera">tube frame</a> for the purpose of straightening auto bodies. For the next 25 years his "Ram's Head Body and Fender Machine" improved and increased production for <a href="/w/index.php?title=Auto_body_work&action=edit&redlink=1" class="new" title="Auto body work (page does not exist)">auto body work</a> men all over the U.S. Copying Hauschild’s patented design, a <a href="/wiki/Pneumatic_tool" title="Pneumatic tool">pneumatic tool</a> company in Chicago marketed a number of "destined-to-be-classic" pneumatic <a href="/wiki/Planishing" title="Planishing">planishing</a> hammers, both hand-held for auto body work, and also free-standing ones, with a variety of throat depths for industry and manufacturing.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>By <a href="/wiki/World_War_II" title="World War II">World War II</a>, rivet guns were used widely in U.S. aircraft factories both for riveting aluminum sheets, and for <a href="/wiki/Flow_forming" class="mw-redirect" title="Flow forming">flow forming</a>, the process of working aluminum sheet into and over wooden forms by the application of the pneumatic rivet gun. </p><p>Post-war industry brought many new applications for the "air hammer" technology. Among these were: </p> <ul><li>sand rammers and tampers for <a href="/wiki/Sand_casting" title="Sand casting">sand casting</a> metal</li> <li>plating rack scalers</li> <li>weld chippers</li> <li><a href="/w/index.php?title=Destruction_guns&action=edit&redlink=1" class="new" title="Destruction guns (page does not exist)">destruction guns</a> for cleaning up<sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Vagueness" title="Wikipedia:Vagueness"><span title="This information is too vague. (December 2009)">vague</span></a></i>]</sup> concrete</li> <li><a href="/wiki/Needle_scaler" class="mw-redirect" title="Needle scaler">needle scalers</a></li> <li>pavement breakers</li> <li>metal chisels.</li></ul> <p>Each of these tools has a different purpose despite nearly identical appearance in many cases. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Air_hammer_FK702a.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Air_hammer_FK702a.jpg/120px-Air_hammer_FK702a.jpg" decoding="async" width="120" height="81" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Air_hammer_FK702a.jpg/180px-Air_hammer_FK702a.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Air_hammer_FK702a.jpg/240px-Air_hammer_FK702a.jpg 2x" data-file-width="2468" data-file-height="1664" /></a></span></div> <div class="gallerytext"></div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Air_hammer_for_granite_work.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Air_hammer_for_granite_work.jpg/120px-Air_hammer_for_granite_work.jpg" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Air_hammer_for_granite_work.jpg/180px-Air_hammer_for_granite_work.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Air_hammer_for_granite_work.jpg/240px-Air_hammer_for_granite_work.jpg 2x" data-file-width="4688" data-file-height="3516" /></a></span></div> <div class="gallerytext"></div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Air_hammer_Cuturi_E-type.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Air_hammer_Cuturi_E-type.jpg/120px-Air_hammer_Cuturi_E-type.jpg" decoding="async" width="120" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Air_hammer_Cuturi_E-type.jpg/180px-Air_hammer_Cuturi_E-type.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Air_hammer_Cuturi_E-type.jpg/240px-Air_hammer_Cuturi_E-type.jpg 2x" data-file-width="2424" data-file-height="788" /></a></span></div> <div class="gallerytext"></div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-dixon-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-dixon_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-dixon_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFDixon2008" class="citation cs2">Dixon, John (2008), <a rel="nofollow" class="external text" href="https://books.google.com/books?id=0gwWWDpb-OwC&pg=PA34"><i>Modern Diesel Technology</i></a>, Cengage Learning, pp. 34–35, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4180-5391-8" title="Special:BookSources/978-1-4180-5391-8"><bdi>978-1-4180-5391-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Modern+Diesel+Technology&rft.pages=34-35&rft.pub=Cengage+Learning&rft.date=2008&rft.isbn=978-1-4180-5391-8&rft.aulast=Dixon&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D0gwWWDpb-OwC%26pg%3DPA34&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAir+hammer+%28fabrication%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">White, Kent. "Pneumatic Power Shapes Sheet," <i>Home Shop Machinist</i> magazine, Vol. 26, No.3, Jun 2007</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">White, Kent, "Pneumatic Power Shapes Metal," <i>Home Shop Machinist Magazine</i>, Bonus Issue, June 2007, Village Press.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Air_hammer_(fabrication)&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid 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data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Air_hammers" class="extiw" title="commons:Category:Air hammers">Air hammers</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=zuLMI4hapEc">Air Power Hammer shrinking 14-gauge steel demonstrated</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl 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