Quote:
Originally Posted by Cory
sdp-si.com will have many different flavors of this gear (bore size/face width/material/etc).
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In metal, for 32dp, 20 degree PA, .25" face width, SDP-SI has 18 and 24 tooth gears, but not 20. Fortunately if you're willing to go a bit wider or a bit thinner, they do appear to have 20t gears that meet the OP's requirements.
Also they have a far larger variety of gears with those specifications than Tetrix, so you can likely make your desired ratio work anyways, even if you want to stick with your exact requirements.