ER32 Collet Chuck for Proxxon PD 400

[DaveH]

(05-01-2012, 08:40 AM)Wongster Wrote: Dave,

I've 2 speed settings for the auto feed; 0.07mm/rev and 0.14mm/rev. At 160 rpm with 0.07mm/rev, I can hear some "grinding" sound during the cut. I hope that's normal.

If I keep all settings unchanged but increase the depth, will I have problem(s)?

How would you do this?

Regards,
Wong

Hi Wong,
The noise is the "cutting" noise - sometimes some cutting fluid will help the cutting action.

"How would you I do it" - well my first consideration is for the well being of my lathe, I don't like to "force" it, I can't afford to break my lathe.

Increasing the depth of cut for the same speed and feed nearly always increase the "strain" on the lathe. I'm always gentle with the depth of cut.

Me - I nearly always increase the feed, the finish looks like a fine thread sometimes but I can do some finishing cuts.

It is going to be slow Wong, and a lot of swarf
You are doing fine, slow and careful is always the way

DaveH