Spring Cut Off Tool - Winky's Workshop Style

In this video I make a spring style parting tool for the lathe. This idea came from Mark from Winky's Workshop. He has a number of videos showing his builds, and the testing he has done to come up with his own design (which I used in this video).
His original cut off tool - • Better, Best or the VE...
His new design - • Spring Cut Off Evoluti...
A follow up on his new design - • Spring Cut off Tool Fo...
I would also like to thank Preso from the Mark Presling channel. He has a great video series on a rear mounted parting tool for the lathe. In these videos Preso goes into great detail on how parting works and the issues with parting. These videos are worth a watch.
Part 1 - • Rear Parting Tool Hold...
Part 2 - • Rear Parting Tool Hold...
Part 3 - • Rear Parting Tool Hold...
Performance Analysis - • Rear Parting Tool Hold...

[@rodswim492]

I really like your videos. Been a toolmaker for 40 years and appreciate your down to earth "get to it" approach!

[@thehobbymachinistnz]

No problem and thank you.

[@Preso58]

That worked great Jon. I never had the confidence to use power feed when parting off. I hated giving up that control. But now I think it actually helps. Consistent feed means consistent chip thickness and tool pressure.

[@thehobbymachinistnz]

Thanks Mark. Have a Merry Christmas and I hope you and Mrs Preso have a great New Year.

[@Arthur-ue5vz]

Wow!
That's one very impressive reimagining of a cutoff tool!
I love it!
I'm 100% for anything we can do to make our tools safer and this approach is something I believe EVERY shop should consider doing!
Brilliant idea!
Thank you for sharing! 😊

[@thehobbymachinistnz]

Thank you. The credit goes to Mark from Winky's Workshop for this design.

[@MattysWorkshop]

Gday John, that worked great, fantastic job mate, cheers

[@thehobbymachinistnz]

Thanks for watching Matty.

[@MyMiniHomeWorkshop]

Rigidity and parting problems were the main reasons I made a solid tool post for my little homemade lathe a while back, I had seen all the other videos you mentioned and your version of Winky's seems to work fantastically well. 👍

[@thehobbymachinistnz]

Thank you. Looks like you have been busy rebuilding your lathe.

[@MyMiniHomeWorkshop]

@@thehobbymachinistnz Yeap, it's been keeping me busy 👍

[@Rustinox]

I think we can call this success :)

[@thehobbymachinistnz]

Thanks Michel.

[@Xynudu]

Hi Jon. The holder appears to work very well. Interesting concept. I will have to keep that design in mind for a rainy day ;) Cheers Rob

[@thehobbymachinistnz]

Thanks Rob. Have a Merry Christmas and a Happy New Year.

[@garysgarage101]

Excellent job. I think lack of rigidity would be the bigger problem to solve though. I find on smaller lathes like mine it’s a significant issue.

[@thehobbymachinistnz]

Yes, and probably worse on a worn lathe. Thanks for watching.

[@terrycannon570]

Great job

[@thehobbymachinistnz]

Thanks.

[@tdck2978]

I love watching blondihacks, she's amazing.

[@thehobbymachinistnz]

She does explain things well.

[@joell439]

Well done 👍👍👍👍👍👍

[@thehobbymachinistnz]

Thanks.

[@TheAyrCaveShop]

Nice idea Thanks !
Merry Christmas

[@thehobbymachinistnz]

Thanks you. I will pass the credit for the idea on to Winky's Workshop.

[@DavidR8]

Definitely going to build one of these fro my 12x37. Thanks mate!

[@thehobbymachinistnz]

Thanks for watching.

[@mrsockyman]

Brilliant job! Would be interesting to have an indicator on the flexible part to see the part move

[@thehobbymachinistnz]

Yes, that is a good idea.

[@billshiff2060]

That little angle is for Clamping. You are supposed to grind it flat on top for the cutting end.

[@Rustinox]

Indeed.

[@thehobbymachinistnz]

Thanks, someone else pointed that out as well. I will grind it flat next time I'm parting off in the lathe to see how it goes.

[@kenjohnson6338]

It all went a little bit Mr Crispin there for a moment..!!!

[@thehobbymachinistnz]

What do you mean? I don't wear a hat when I walk into the workshop.

[@peterhadfield873]

The chamfer on the top of the blade is for it to fit in a dovetail type holder. Your supposed to grind the top flat at the point where it cuts. Hope that helps. Cheers.

[@thehobbymachinistnz]

Thank you. That makes sense, I will try that out.

[@jimb9265]

This movable tool block is interesting but I would simply use a positive rake cut off tool in a solid holder setup instead of a neutral rake tool and see how that goes. You could also grind the positive rake into the top of the HSS blade to get the positive rake effect for better shear or go to an indexable insert cut off tool with the positive rake built into the chip breaker for a normally neutral cut off tool holder. The power feed was interesting...an occasional off/on with the feed may break that long chip for you.

[@thehobbymachinistnz]

Thank you for your comments.

[@Supervisor000]

В старых-старых учебниках, где-нибудь за 1910-1930-е, у этого приспособления рекомендуется между половинками Ω-образного паза вставлять кусочек древесины.

[@thehobbymachinistnz]

Спасибо за совет.

[@davidgillard9633]

Me thinking a Lazer engraver.

[@thehobbymachinistnz]

An extra 50 points if you can guess which model.