- Joined
- Aug 29, 2016
- Messages
- 121
The machine as shipped is not well set up for cutting threads. I think it can be made to do both metric and Imperial well. If you use a threading dial and mount an end stop on the bed to the right of the carriage you should be able to cut threads. The end stop allows you to accurately place the carriage at the same spot after every pass. The threading dial allows you to cut from the same spot on the lead screw every time.
The correct way to cut the threads is advancing the carriage at a 29 degree angle so as to only cut one edge at a time.
The problem is that although a threading dial is available for sale you have to modify the machine. No end stop exists.
I have ordered a threading dial which has a gear that sits on the feed screw and is connected to an indicating dial. I will print a plastic adapter that does not require modifying the lathe, I will also print out an end stop. After verifying that this does what I think it will do I will order parts from a machine shop.
If you use an end stop to position the carriage at exactly the same place on return after each pass, then wait for the threading dial to come to 0 and then engage you should be starting your thread at the same position on the feed screw regardless of the thread.
My dial is divided into 16. I will have to put a 16 tooth gear to follow the lead screw. Every mark on the dial will have the lead screw in the same position. One turn of the lead screw moves the dial to the next tick.
I was not clear and have edited this post
If there is any interest I will order parts for sale.
The correct way to cut the threads is advancing the carriage at a 29 degree angle so as to only cut one edge at a time.
The problem is that although a threading dial is available for sale you have to modify the machine. No end stop exists.
I have ordered a threading dial which has a gear that sits on the feed screw and is connected to an indicating dial. I will print a plastic adapter that does not require modifying the lathe, I will also print out an end stop. After verifying that this does what I think it will do I will order parts from a machine shop.
If you use an end stop to position the carriage at exactly the same place on return after each pass, then wait for the threading dial to come to 0 and then engage you should be starting your thread at the same position on the feed screw regardless of the thread.
My dial is divided into 16. I will have to put a 16 tooth gear to follow the lead screw. Every mark on the dial will have the lead screw in the same position. One turn of the lead screw moves the dial to the next tick.
I was not clear and have edited this post
If there is any interest I will order parts for sale.
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