Simple Mk3S to Mk3S+ PFTE tube jig

Jig allows Mk3S spare PTFE tubes to be cut down to size for the Mk3S+ extruder body parts. Use this jig to trim down the PTFE tubes to the right LENGTH . Does not chamfer, does not shape raw PTFE tubes into useful parts.

To chamfer, I recommend using a 45 degree center drill from Harbor Freight. Insert the smallest center drill, push, and wiggle in a circle motion with the drill running. This will chamfer the tube and open it up close to 60 degrees. A 60 degree center drill is still a better option if available.

(HF Center drill kit - https://www.harborfreight.com/center-drill-countersink-set-5-piece-60381.html )