Filament Splicer

Cutting guide, holding jig and forming dies for filament splicing.

Used ~25mm of oversize 1/4" PTFE tube, 1/16" ID. Drill out with #50 or #51 drill bit AFTER its all put together.

Drill bits in order of size-
Number 51 - 0.0670 inch
1,75 mm = 0.0689 inch
Number 50 - 0.0700 inch

McMaster-Carr Part Number 8547K17. (As of this writing, their catalog page is jacked up, they appear to be changing suppliers. Generic PTFE is just fine.

The tube outer surface is roughed up with a coarse Dremel and sanding drum, then flame oxidized to bond with JB Weld to a pair of 3d printed jaw liners. Glue tube to the liners and liners to the Vise-Grips at the same time.

A couple people have msg'd me, what is 'flame oxidizing'- this is a good intro:
https://theepoxyexperts.com/flame-treatment-plastic-substrates-adhesive-bonding/

There is enough material in the tube that you could put a few dimples on the tube to engage and key into the glue. I have found the flame oxidized b