The file 'Lathe 127 100 Change Gear For Metric Threading 3D Printer Model' is (stl) file type, size is 1.1MB.
Printed this for my Logan 11" lathe. FYI it does not fit under the cover on an 1875, but this is a better ratio then 37/47 setup.Printed with 12 walls and 25% infill and triangles
16DP tooth5/8" shaft5/32 keyway