I using an bosch 8mm flute with 2 straight bits, it can go up to 20mm deep. Making cuts and pocket work great on mdf, i using 2mm (Z) for each pass.
But the problem is when i try to make an 15mm hole, at 5 or 6 mm deep the flute start to shake very violently and i end up with an big hole of 20mm or more.
I do not know how to solve this…
- My cnc legs was 20cm, maybe using short legs like 15 or 10 cm?
- Use an 6mm or 4mm flute to make the 8mm holes?