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<p>CamBam can generate timing gears for a regular 2.5D mill/router. The problem with cutting it that way is that you don't get nice sharp edges inside the teeth. I suppose you could do the first pass with a larger cutting tool to quickly cut the outline and then switch to a smaller tool to get better tooth definition.</p>
<p>An A axis definitely makes better teeth though.</p>
<p>A tool like this : http://svstuff.com/Gears/ does a nice job. Or http://www.cad2gcode.com/pulley/</p>
<p>The better one is likely Gearotic (http://gearotic.com/index.html) from the same guy that does Mach3 for your CNC machine, but it possibly is overkill for what you need.</p>
<p>If you dig around there are some free plug-ins or g-code generators that will do timing gears for free but I'd likely spend the $12 or $20 to get one of the nicer ones from above.</p>
<p>Aaron</p>
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<p>On Wed, 6 Jul 2011 09:47:40 -0400, Darcy Whyte wrote:</p>
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<p>I'm just about to go to General Bearing Service to pick up a timing pulley. Once I have it and I complete my A-Axis for my mill I will be able to make pulleys. </p>
<div>Does anybody know the exact shape of a timing pulley? I don't care about the flanges, just the teeth. Perhaps I could try and make one with a 3-Axis mill? Is there a code generator for that around? Or some shapes that will work?<br /></div>
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