oldengineguy
Well-Known Member
Recently bought a King 1236 lathe , probably the same as Grizzly or Jet or Precision Machine. Probably sold under many different names in Europe and Australia too. In setting up and trying out my new toy I was going through the different Metric and Imperial threads to check for accuracy. All seemed well until I got to
Metric pitch 1.5. With gears and change levers set as shown on chart , cut a test thread, and found it was not correct ! Tried .75 and 3 (change lever in 6 position as specified,the same position as 1.5) and these were wrong too. Tried a few other threads with different chage gears and lever positions and found them to be O.K. Checked and double checked my settings and found them to be as called out. I know it's not the right way to describe the problem but it cut less threads per length than it should. I have tried Imperial threads with lever in 6 position 6 12 24 and they are correct. Sorry for the rambling description of my problem , has anyone else found they can't cut 1.5 pitch on this generic Chinese lathe ? Thanks Colin
Metric pitch 1.5. With gears and change levers set as shown on chart , cut a test thread, and found it was not correct ! Tried .75 and 3 (change lever in 6 position as specified,the same position as 1.5) and these were wrong too. Tried a few other threads with different chage gears and lever positions and found them to be O.K. Checked and double checked my settings and found them to be as called out. I know it's not the right way to describe the problem but it cut less threads per length than it should. I have tried Imperial threads with lever in 6 position 6 12 24 and they are correct. Sorry for the rambling description of my problem , has anyone else found they can't cut 1.5 pitch on this generic Chinese lathe ? Thanks Colin