Could this be any useful?

I bought the bits here https://www.aliexpress.com/item/10pcs-3-175mm-1-8-0-8-3-0mm-Pcb-Drill-Bit-Tungsten-Steel-Engraving-Milling/32509294442.html?spm=2114.13010608.0.0.OLKqeB a long time before this class so I could use on my DIY CNC. Can they still be useful or should I just order new ones? Thank you.

JON-A-TRON1 month ago

You can probably use them with plastics and get good results, but I don't think they'll work well for wood. I would try them out with some delrin or maybe ABS stock. https://www.mcmaster.com/#standard-plastic-sheets/=16qloov

bayonino (author)  JON-A-TRON1 month ago

Alright Jon, I'll try with plastic(acrylic), thanks!!