Hello welcome to Enots engineering I'm Alan in this video which is part two
We make this stop screw 5/16 BSW plain portion and an knurled head quite a simple screw to make.
It fits the part we made last week which is this stop bracket and we'll see
how these two work when your machining a thread.
So let's go to the workshop and see how we do it
0.3125" which is 5/16
I've got a smaller collet that will just go into there.
Face the front
On the cross slide you've got this hole that's been drilled and tapped 5/16 BSW
and that is what we use for the stop
Now I'll set up the lathe to demonstrate the screw stop when cutting a thread.
I'm not going to cut a thread but I'll demonstrate the procedure.
first of all set your compound slide to around 29 Deg
Depending on the thread you're cutting
Set the cutting tool square to the part and set the tool so it's just touching the part
Then zero your compound slide
Next fit the thread stop clamp on to the cross slide and tighten up the clamping screw
Ensure that the clamp is firm, then insert the clamping bolt into the stop
until the face of the clamping bolts hits a stop
Back the tool off on the compound slide
Back the cross slide out
Wind the cross slide in until the clamping bolt hits the stop.
Turn the compound slide in until the tool touches the part
and if you set it correctly the compound slide should be on your zero mark
Now you're ready for your first cut
Wind back to the start put a cut on start the lathe
and engage the half nuts.
Cut the thread until you come to the end of the part.
When you come to the end of the cut turn this out stop your machine reverse it back to the start
At the start stop your machine wind the cross slide in until he hits a stop.
You should be now ready to put your second cut on.
Put on your second cut
Start the machine
When you get to the face wind the cross slide out stop the machine.
so this stop just lets you wind in.
You don't have to worry about the settings on the dial.
You just wind it in until it hits the stop and you know the depth is correct.
Put your feed on for the next cut.
cut along when you get to the end
wind out switch off your lathe, reverse it and the lathe or back up.
wind back into the stop.
Put your next cut on.
Another use for this stop is
If on repetitive turning you've set your stop for your first one where you want to repeat
Next jobs in there so you machine off go in machine off and then when you
come to the stop it will be at the exact position.
So you can use this as a stop to control the cross slide.
That's the finished cross slide stop or thread cutting stop.
I hope that was useful, hope you've enjoyed it
and we'll see you next time on Enots engineering.