I have had eBay 440 40 watt CO2 laser for sometime now and the other day the square test fire stuck and would not release! This was not a good thing as I had to hit the power switch quickly, however what was harder is I didn't have a square button to replace but had a dozen or so standard round ones so what to do as round peg doesn't fit a square hole or the saying goes. So I turned to Fusion 360 and designed an adapter! The part snaps into the top and the round bottom piece retains the two with the button cinching the whole thing together! Oh, here are the buttons as you can use these https://amzn.to/2TE1npQ or https://amzn.to/2uTqMni as replacements.

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If you are looking for one of a kind swag shop for yourself or a Maker Geek friend, visit our swag shop at http://Swag.DIY3DTech.com for unique 3D Printing, Laser Cutting and CNC swag! Too, if you want a behind the scene look at what we are working on be sure to follow us on Instagram (https://www.instagram.com/diy3dtech/)!