So you know how in conventional right to left threading, you cut the thread, back off the cross slide, move the carriage back and advance the compound for the next cut, but have to get the cross slide back to the exact position before the next cut? The Takisawa has a nice square groove along the left side of the cross slide, so I made a very simple adjustable threading stop, so that you can just move the cross slide back into the threading position until it hits the stop. The stop, in my case, bumps against a bracket that I was too lazy to cut short when I installed the DRO...kind of happy I didn't though, It's easy to make a bumper fixed somewhere on the far rail of the carriage, though. Lots of choices to mount to.
So it's adjust the stop as needed, run the cross slide up to it, advance the compound a few thousandth for the next cut, cut, stop the feed, back off the cross slide, move the carriage back to start position, run the cross slide in until the stop hits the bumper, advance compound, make the cut, etc.
If you are doing the Joe Pie threading technique, from left to right, you need a stop for the cross slide on the way out, instead of in.
I made a stop for that, too, that fits across the dovetails with a thumbscrew in the middle.
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