Gantry style CNC mill

[Boyan Silyavski]

A question pops to my mind. Looking at the type of structure. WHY BT30 head?

I understand if you will tapp all day. But if not:

-you limit your speed more than half
-3kw spindle will cut through directly 1mm of mild steel with no problem and HSM with 6mm flute in that same mild steel any depth to 6mm!!! I know that from my machine
-forget about wood
-forget about engraving
- even aluminum needs 12k RPM at least with normal 6mm flute and 24k with 1/8 and similar

IMHO you limit severely your machine with this BT30 spindle. Its like driving a big black 4x4 near the seaside on a perfect road, while you must be driving a white cabrio sports car...


To me tapping could be solved differently and money spend towards better spindle, bigger spindle. At the end of the day it would be cheaper to make a dedicated servo+Z2+collet just for tapping.

Because from the looks that's not a machine for steel for me and i can not be easily convinced that it will be with that aluminum profiles.

Just some thoughts

PS. If you insist on this shape, size capability, then you need Epoxy Granite one, not a router, but mill. Ah, yeah. And extra spindle for small bits and engraving...