The problem began when you got into a taper??? Hmmm.? Well, I wouldn¡¯t go straight for the gibs.? I¡¯d look at the tool geometry, that it¡¯s set on the centerline, your cutting speed and the depth of cut to make sure all that¡¯s reasonable for the metal you¡¯re cutting.?? For reference, let¡¯s have your metal and the diameter you¡¯re turning, then we can get the feeds and speeds out of the way.? When you mentioned the taper, I thought about depth of cut varying, which started me thinking ¡®back to basics¡¯.
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By the way, I have had a Micromark 7x14 for almost 5 years now.? Not too much tune-up was required, though I did find a QCTP (Quick Change Tool Post) let me get the tools set a lot faster than shimming them.? That¡¯s where my money is at present (with the scant data at hand), that you¡¯re cutting below center.?
From: 7x12minilathe@... [mailto:7x12minilathe@...] On Behalf Of Bill Sent: Monday, February 11, 2013 7:29 PM To: 7x12minilathe@... Subject: [7x12minilathe] chatter
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Hi all I am a newbie , I am having difficulty with chatter even on light cuts. I am trying the tuning method explained in mini-lathe .com. I got a micro mark 7x16 lathe I have done a few light turning with it and went pretty well then I had to do a taper and thats when the problem began. I am having trouble adjusting the saddle mostly when I follow the instructions if I tighten the setscrews the saddle is very hard to move so obviously more than finger tight is too much does that make sense? Also the 1 mil it says to attain gap between ways and saddle would also make the saddle hard to move. I must be doing something wrong? Bill
