Summary

This is a remix of the work of MrFuzzy_F from 2019. For all i know, everybody's been using much better techniques for years, but here I am. I printed his design, and it served me well for 3 tallish cabinets.
Drilling this holes is surprisingly tedious and unastisfying. The standard 32mm gap feels very narrow, so I found myself wanting to skip every other hole, and wished the jig were longer so i could have an even gap and work faster.
So that's what I did. The jig now has 7 holes, which means you can drill 4 holes every 64mm. That's about it. It's still an incredibly tight fit on my printer, even though i made the bearings holes a tiny bit bigger. And I chamfered a few edges.
I've printed it, should do the trick for the next cabinets i'll have to drill. The real solution is probably to make a jig using plywood of MDF, so that it's longer, but something has to be said about the practicality of pressing a button and having the printer work for you.
Bearings are 625, i got a bag of 10 on Temu for 1.6 eur. I also got 5mm shelf pins from there, the kind with the plastic half on which the shelf rests nicely, rather than the usual tube shaped one.
The smartest element of the original design is the relief channel at the back, so that saw dust can escape. i have a machined aluminum doweling jig that doesnt have that...