Filament extrusion measurement jig

by johnmeacham

jig for using calipers to precisely measure amount of filament extruded. Useful for configuring extruder steps as well as non-linear extrusion. Extra parts needed PC4-M10 bowden tube coupling https://amzn.to/2S5zQ0y Clear Bowden tube Calipers You can get by with regular bowden tube and no coupling if you have another way to secure the tube in place and don't mind that it is harder to see through non clear tubing. Use a marker to mark the filament as the entrace to the jig and extrude 100mm, slide the depth gauge of the calipers down the slot until it lines up with your mark to see how much has actually been extruded.