Well still learning the speeds and feeds, think the RPM a touch high.

Well still learning the speeds and feeds, think the RPM a touch high.

Turn your volume down.

200mm/m, .5 dives at 4mm/m, 4mm single flute up cut (dull) in 6061.

No walk noticed at all except I did not I had to force air over the TinyG and turn the Z axis current to 3/4. Reason the end mill is dull…:-), the Z dropped noted it drug the end mill through an 1/8" bite and remained on course!


That spindle and controller is a beast. Is there PWM control inputs to that controller. Its huge…

@Thomas_Shue yeah bud, there are, unfortunately I don’t know much about it. Shouldn’t be hard as long as it is a 5v PWM input system, right?

I’ve always tuned my speed by hand. It’s easier for me to control based on if my tool has several hours or is fresh out of the box. I can normally tell at the first hole how I’m looking.

The spindle has to have several wires and is water cooled. So much amperage running here, makes me a little nervous.

Oh and the Chinese spindle can be found on eBay and Ali.

I rather not post a link as there is some junk out there.

I’m working with a manufacturer now…

+Peter van der Walt yeah man, that’s what I watch for as well, namely chip size.

Probably should put a note out there about how to read chip size. But front gantry plate for a standard OX almost done. Once I can see that side cut I’ll know if I can take a BIGGER bite.

Next run .6 DoC

Cool stuff. I cant wait to see that stuff in your store.

Well. This sent me down a rabbit hole (found/read lots of articles). I thought the CAM software that generates the g-code would include the bit flutes & size, and material being cut in the calculations. But it sounds like this is not the case, and perhaps there is more “art” to this endeavor than I had thought?

Some of the top end CAM (20K$ a seat) will do that, but nothing we run on these machines will do that for you. Machining is black magic more than science, for sure.