Waiting on registration approval? Email me! daved223(at)yahoo.com
Here are some real cheap helical gears that could be used in a gat build. (there are many more on ebay too)
https://www.ebay.com/itm/1M-30T-15T-Metal-Helical-Wheel-Gear-90-Pairing-Bevel-Gearing-Set-Kit-Ratio-2-1/292889142228?hash=item44318da3d4:m:msI2ys09LGNo7RpCbMsH8Dg\'>https://www.ebay.com/itm/1M-30T-15T-Metal-Helical-Wheel-Gear-90-Pairing-Bevel-Gearing-Set-Kit-Ratio-2-1/292889142228?hash=item44318da3d4:m:msI2ys09LGNo7RpCbMsH8Dg