Understanding How To Use Change Gears For Threading On A Grizzly G0602 Metal Lathe: Part 1 

Thank you! I could not figure out what they were trying to tell me with those charts!

This is all good info (and reverse thread option will work too) for the Shop Fox m1099 which is apparently a clone of the G0602 with slightly larger swing and longer center to center.

VERY useful video, thanks for posting it. I would like to mention one thing though, and that is your setup for reverse threading. You don't need to go buy a second 127 tooth gear because any size gear (that will fit) will work. It is what is called an idler gear, and its size or number of teeth will not affect the ratio and torque values between gear 1 and gear 3. I know this might sound wrong, but trust me I know gears...I am a clockmaker. Another advantage of using a gear there smaller than 127 teeth is you can find one that will let you close the door.

Thanks for the vid. I have this model and only use it when i need to make a part which isnt too often, and i am VERY green when it comes to machining. Haven't had to make threads but knowing about it, kinda makes me want to turn some bolts.

Great video. Really! Great idea about the last idle gear for left hand threads. However, normally one could use any gear size for the reverse motion. That gear does not contribute to a ratio because it is a single gear. So, for instance, for a complete revolution of the "a" gear so many teeth will have passed (45 in this example). Then, the idle gear will turn so much that the same number of teeth will move along its arc (45 teeth) and the same goes for the middle "c" gear, namely, 45 teeth as well and regardless of the size of the additional idle gear (as long as another gear could fit in the setup). At any rate, this is a great idea and gain the whole video is really good. Thanks.

Excellent! I just bought this model. Thanks for the video!

Thanks....great instructions....😎

thought this was going to be a mark felton video