I have a little Harbor Freight 9x20 and have similar problems with parting, and not just aluminum. It seems so hard on my lathe that I tend to avoid parting and use a hacksaw blade in a little one hand holder instead. Or I will cut it down by facing from the front with a regular turning tool. I dont know, I wish I had a good answer for both of us.
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Halfnutz
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
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