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Re: chatter

 

Hi Bill,
I have read what others have said and most of it is good advice.
I had the same problem with my MM 7x16. The best thing I have done is to spring for a new pair of tapered roller bearings for the headstock. After changing out the headstock bearings and adjusting them up snug the problem was gone. I did a test cut last week on a piece of a 5/8" reamer shank which is machineable HSS. I chucked the piece in the three jaw chuck , spun it at about 1200 rpm and feeding with the carriage handwheel was able to easily remove .100" per side (.200" on the diameter) with absolutely no chatter. It cut like leaded screw stock. I you do this mod and set the bearings up snug you will see a vast improvement.
Dick

--- In 7x12minilathe@..., "Bill" wrote:

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
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