I currently own a Nomad 883 that I’ve been using to machine HDPE. I’ve got my toolpaths/settings locked in and it’s been working fine though I started to hit the limitations of the 883 in terms of how fast I could push the feeds and speeds for my HDPE stock. My project starts with an 8” x 8” by .75” piece of stock.
I recently ordered a Shapeoko 3 XXL which I believe will give me greater machining speed as well as a larger capacity. I should be able to do six of my pieces at one time.
My question is regarding the spindle choices. I’ve read the wikis and looked at air spindles on eBay, some commercial spindles, and the Dewalt 661 with/without SuperPID.
I like my Nomad 883 workflow and the ability to easily control the spindle speed with my g-code output (Fusion 360). In fairness, I typically stick with a 10,000 rpm setting for my tooling but occasionally drop lower if I’m machining interior threads.
Is there any simple solution that allows for spindle speed control within g-code for the S3 ? I’ve seen some people hack stuff but ideally I would like to keep it off-the-shelf as much as possible. It seems to me, that if I can’t control in g-code, I would be better off with a air spindle where at least I can easily set the speed with the VFD.
Lastly, the 65 mm air spindles use ER-11 collets whereas the 80mm spindles use ER 16 collets. I have hit tooling limitations with the ER-11 collets and it might be nice to have the greater chuck capacity of an ER-16. Is the S3 capable of easily hefting the 80mm air spindles once I create a custom bracket?
thank you for any advice you can give me!