@iareid8255 3 months ago Floyd, have you thought about turning the compound slide by 90 degrees. As it is, the parting off action causes the compound to move on the slide, i.e. the side nearest you will want to lift and the toll dip, the amount being how tight the slide is. By rotating 90 degrees, the length of the slide (probably twice that of the width?) will be in the direction of parting and I believe will be more rigid? That said on my old Student lathe, parting off was difficult and nerve racking until I fitted a rear tool post onto the cross slide, parting off is now easy and can be done quickly. I also use a carbide insert parting off tool. @floydraser4603 3 months ago Actually no, I hadn't thought about that at all but now you mention it, it looks fairly obvious! I will certainly give it try next time. That's also another vote for a rear tool post. Not sure I do enough to make it worthwhile but I'll see how it goes. I'm awaiting delivery of a carbide tip parting tool too, a bit more substantial than the one in the video. Thanks for the comment. @floydraser4603 3 months ago I've now given this idea a try, in principle anyway, not actually partied anything off yet. Yes it works in that it more of the cross slide is used to make it more rigid. I still have to wind the cross slide back as far as possible otherwise the tool is moving away from the round post underneath. @iareid8255 3 months ago (edited) Floyd, the mounting of the tool post is rather weak on your lathe. This is presumably due to the design for the clamping of the compound to the saddle? I suspect there is not sufficient depth of material to set those two nuts in a counter bore such that the nuts are below the compound's top face? In comparison, the Student has the tool post bolted directly to the compound slide so is more rigid. Even so using the main toolpost was not great, but my lathe is fairly worn, hence the rear tool post modification. @floydraser4603 3 months ago @iareid8255 Yes it is a bit weak. I'm going to persevere with it as it is and if I'm not happy I'll probably go for the rear post and mounting plate for my lathe, currently about £70 from Warco.
@thosoz3431 3 months ago Winky's flexing parting tool holder is a great success. His plans are free and easy to follow. @floydraser4603 3 months ago Just had a look at his video. That's a bit of a project which is fine if you need something to do and have the materials. However, it doesn't eliminate the overhang.
@iareid8255
3 months ago
Floyd,
have you thought about turning the compound slide by 90 degrees. As it is, the parting off action causes the compound to move on the slide, i.e. the side nearest you will want to lift and the toll dip, the amount being how tight the slide is. By rotating 90 degrees, the length of the slide (probably twice that of the width?) will be in the direction of parting and I believe will be more rigid?
That said on my old Student lathe, parting off was difficult and nerve racking until I fitted a rear tool post onto the cross slide, parting off is now easy and can be done quickly. I also use a carbide insert parting off tool.
@floydraser4603
3 months ago
Actually no, I hadn't thought about that at all but now you mention it, it looks fairly obvious!
I will certainly give it try next time. That's also another vote for a rear tool post. Not sure I do enough to make it worthwhile but I'll see how it goes.
I'm awaiting delivery of a carbide tip parting tool too, a bit more substantial than the one in the video. Thanks for the comment.
@floydraser4603
3 months ago
I've now given this idea a try, in principle anyway, not actually partied anything off yet. Yes it works in that it more of the cross slide is used to make it more rigid. I still have to wind the cross slide back as far as possible otherwise the tool is moving away from the round post underneath.
@iareid8255
3 months ago (edited)
Floyd,
the mounting of the tool post is rather weak on your lathe. This is presumably due to the design for the clamping of the compound to the saddle? I suspect there is not sufficient depth of material to set those two nuts in a counter bore such that the nuts are below the compound's top face?
In comparison, the Student has the tool post bolted directly to the compound slide so is more rigid. Even so using the main toolpost was not great, but my lathe is fairly worn, hence the rear tool post modification.
@floydraser4603
3 months ago
@iareid8255 Yes it is a bit weak. I'm going to persevere with it as it is and if I'm not happy I'll probably go for the rear post and mounting plate for my lathe, currently about £70 from Warco.
@thosoz3431
3 months ago
Winky's flexing parting tool holder is a great success.
His plans are free and easy to follow.
@floydraser4603
3 months ago
Just had a look at his video. That's a bit of a project which is fine if you need something to do and have the materials. However, it doesn't eliminate the overhang.