sieg kx3 cnc mill

[ArtyMarty]

I've been trying to decide what CNC to get for the last 6 months. It's doing my head in as it's a big investment and I don't want to screw up.

I was originally going to get some sort of mill and convert it, however, I want to start making things now, not spend the next year building a cnc.

I saw one of these Sieg kx3 on the weekend and was impressed.
My only worry is the spindle speed seems a bit low. 5000rpm max. Looking at a speeds and feeds chart for carbide tools in aluminium.
3 - 6 mm dia = 10,000 rpm
8 - 12 mm 8,000 rpm
14- 16 mm 6,000 rpm
18 -20 mm 4,000 rpm

Would it be a problem?
Is there an upgrade motor?

Cheers, Marty

[chas-SX3]

I've been trying to decide what CNC to get for the last 6 months. It's doing my head in as it's a big investment and I don't want to screw up.


Cheers, Marty

Depends if you want to make £money with it or just use it for hobby use with the BIG question of how much are you prepared to spend.

I have a much older Syil SX3 @3500rpm & with a little TLC she can kick out some very accurate parts with good surface finishes in ally. You just need to experiment with feeds & speeds until you hit your sweet spot and never take the various calculators speeds for granted. I use cutters from 1mm upto 16mm in mainly 6082 t6 & get great results from engraving right through to 3d carving.

Your biggest plus with going with a KX3 would be the user base is at your level and prepared to help with what might seem unsurmountable problems to you at first but usually turn out to be the small niggles that are just part of the learning curve. You don't get that with the pro machines . . . .