Simple Circle Burning Device

Many years ago, I put together this circle cutting contraption using a magnetic base, a Grainger gearmotor, and a toy train transformer. The torch tip was held by the machine, while the operator manually operated the cutting oxygen lever. On-off and variable speed were controlled by the transformer.

It worked fine, but if I did it again I would use heavier parts. Back then, all hobbyists had were oxy-acetylene torches. Today, a plasma torch in this device would do even better.

Attachment 38134 Attachment 38135

<!-- BEGIN /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->
Thanks tmate3! We've added your Circle Cutting Jig to our Cutting Torches category,
as well as to your builder page: tmate3's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-circle-cutting-jig-38"> <img src="/uploads/243420/homemade-circle-cutting-jig-38.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-circle-cutting-jig-38">Circle Cutting Jig</a> <span> by <a href="https://www.homemadetools.net/builder/tmate3">tmate3</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/magnet'>magnet</a>, <a href='https://www.homemadetools.net/tag/motor'>motor</a>, <a href='https://www.homemadetools.net/tag/cutting-tool'>cutting tool</a> </div> </div> </div> </div>
<!-- END /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->