- Joined
- Jul 6, 2022
- Messages
- 498
I use whatever my lathe was last set at. Aluminum isn't picky. You can get an excellent finish from 200 - 2000 rpm. The 'official' speeds are only a guideline, and they are optimized toward production - i.e. "what's the fastest I can go?". Don't be afraid to slow down (unless you're selling your labor...).
GsT
Interesting. I assume you need to adjust the feed rate if you slow down the spindle speed to reach the desired SFM for finishing? Or is that not how it works?
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