Engraving bits...

[Boyan Silyavski]

Yes 3mm shank, so it seems they are not that useful after all.

Need to look for some 60degree 1/4 shank ones?

But 30 degree bits are usefull, it does not matter that they are 3mm. I would say even better, because it's one thing to brake a 3 euro 1/8 bit and another 15euro 1/4.

That's my all time favourite 60 degrees, 1/4 bit. solid carbide, Kyocera and only 5 euro, ebay item 151942760125. No to speak of that it could be sharpened 100 times if you have a grinder, i pay to a guy here locally 2 euro each time to grind it fresh. When i am lazy i use it for final slot cut, instead of changing bits