Harrison L5A Lathe Change Gear Collection

thingiverse

This selection of gears allows the English version of the Harrison L5A Lathe to thread in most all metric sizes as well as fine and coarse pitch ranges. 40T - Used on the intermediate shaft for all metric pitches. 50T - Used on the intermediate shaft for the "Fine" English range, with the 100T gear. 60T - Used on the intermediate shaft for all metric pitches except 1.75, 3.5, 4.5 and 7. 63T - Used on the intermediate shaft for metric pitches 1.75, 3.5, 4.5 and 7' 100T - Used on the intermediate shaft for the "Fine" English range, with the 50T gear. The 127T gear is not listed, since it has already been provided by nglasson here: https://www.thingiverse.com/thing:1802545 Much thanks to nglasson for posting the SCAD source, which I used to generate these gears. I added the text on the sides of the gears after SCAD with Tinkercad. Note that the infil is not as critical as is shell thickness. You want to insure that the teeth are solid. In situations where you have 2 PLA printed gears meshing together, minimise the use by only when actually threading. I am not sure of the durability of these gears for constant use, but are more than up to the task of threading.