WorkshopChris
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Are you keeping that tool at the same angle when you go from the good face cut to when you start reducing the diameter?
No. I moved it slightly as to not hit the chuck.Are you keeping that tool at the same angle when you go from the good face cut to when you start reducing the diameter?
Not yet. But just been reading the cause of chatter .it's mainly incorrect speed. I must be turning to fast.Have you got a tool similar to this profile you could try.View attachment 122230
Definitely worth a try, its not like you have a lot of tool stickout or a long part unsupported with the tailstock and centre.Not yet. But just been reading the cause of chatter .it's mainly incorrect speed. I must be turning to fast.
Just making a new handle for the machine. Loads of off cuts so might as well do something with emGood stuff. What's it gonna be?
So speed up on face cut. I see what you mean by worse towards to centre.See how the face surface finish gets slightly worse toward the centre?
That's because it's the rightish speed at the periphery, but too slow in the middle.
Chuck up your hex, speed up the lathe by at least 1.5x and take a face.
There are machines that'll do that automatically, yours isn't one of them
Ok. I will try that tomorrow. Thankyou.Yes and no...
Ideally, you'd set the speed for turning and that would be correct for the edge of the face.
As you move inwards facing, the rotational speed would have to increase to maintain the surface speed at the tool tip.
There are machines that'll do that automatically, yours isn't one of them
The best you can do is pick the speed that gives you the best average finish across the face - if the material of that larger disc is the same (or close enough) to the hex and it's a play piece, then increase the speed until you get a finish you like at the diameter of the hex.
Edit: start the face cut at the centre on the hex and cut outwards - it's nicer to start without the interrupted cut.
That's next when I dial in setting up these cuts. It would be nice to take some slightly heavier cuts.Absolutely.
Sounds like a tidy machine to have those functions.Still not automatic though, unless you've hooked a sensor on your cross slide into the vfd control line
May be on the Colchester. That's being a pain in the butt .You could retrofit a system to yours - add vfd, 3 phase motor and dro, and make an interface
Just think. By the time that's up and running you'll have sussed out a lot especially working within the limitations of a little machine and its issues. Be a pleasure to use by then.May be on the Colchester. That's being a pain in the butt .