Dowel jig for 6mm dowels. It uses the inserts of a cheap dowel jig and has the same functions as the cheap dowel jig but includes some more features like measurements on the jig itself and alignments pins. The alignments pins are very useful for repeated drills. And was the main reason to design this jig.

It uses 2x 7mmx15mm springs. Can be bought here but shipping is expensive so probably good to look elsewhere: https://nl.aliexpress.com/item/1005002654144538.html

And it uses a m4 countersink bold and nut with length of 20mm.

Dowel jig for 8 and 10mm dowels will probably come in the future