Originally Posted by
dogstar
I'd like to be able to do fine engraving/machining in a number of different materials: plastics to steel, so I need speed. My existing setup is a Clausing/Kondia CNC 40-taper, w 3hp spindle motor with variable-speed adjustment via V-belt & hand-crank. Max speed is 4000 RPM (and I get a little worried when it's cranked up to this). I'd like to get 15 to 20K. spindle RPM. The sort of power I'd need is similar to a Foredom/Dremel sort of tool. Volume of work would be rel small.
I cannot spend a lot on this; it's a pretty tight budget.
I understand there are 3 different ways to go:
-1) mechanical speed-multiplier through existing spindle motor
- 2) electrically-driven motor, externally powered (similar in size & concept to a Dremel)
A variation on this is to make a custom adaptor that allows me to attach my Dremel onto the spindle (Spindle OFF obviously). This seems kinda rinky-dink though.
- 3) air-driven spindle motor, externally powered by compressed air (I do have a compressor.) Speeds here can reach 30K+ I understand.
Anyone have advice & opinions? Thanks for our help.
Dogstar