Thank you! I just broke another carbide and decided to see if anyone on youtube had a solution. Your solution is beautiful

Your channel deserves more subscribers. I really like the slideshow approach over videos. It's far easier to see the important details.

Anything that improves a process has to be worth it's weight in gold......no matter what.

Brilliant. I have a Colchester Chipmaster which is a rigid lathe but I have never succeeded at parting with it. No matter what I use - HSS or carbide, it would end in breaks or chipped inserts. I will be trying this for sure.

Thank you. What a great idea. I am going to make one as soon as I can.

That was a great video. Simple solution to a perennial problem, presented very clearly. I will have to make one for my lathe! I also subscribed.👍👍

Great idea. Thanks for the video.

I'm a big advocate of really finding the true On Center measurement and using an Indicator to set your tool. I've done the usual Eye Ball, Ruler tricks but for "Has To Be Right On" nothing beats it.

I implemented a version of your parting tool support thingy. Works really well, so thanks for sharing.

What a great project! I have an idea similar in concept but different in execution. I’m pretty well covered in the parting department as of last week but if and when boredom strikes I have another project :)

Thank you for your support, Sir.

what a great idea, looks like a great problem solver for my shaky compound slide...thank you, cheers from down in Florida, Paul

Thanks for the advise. I got mine to not break insert by basically backing the tool inside the 4 way tool post, but those without a 4 way toolpost can't do this, and the support really helps. I found the support size is critical, too little and it doesn't support, too much and it shifts the center point too high. Will need to make more than one, or have a way to adjust the length. Problem is these things are designed for CNC... where they're not oriented like a manual lathe but backwards (it means your took faces downwards, and the lathe turns backwards). Doing this somehow improves stiffness for some reason, and on a lighter lathe that can't use parting tool without chatter mounting it backwards can eliminate the chatter. If you look at every CNC lathe video you will know what I mean, the tool faces the wrong way compared to a manual lathe. Edit: Most parting tool holders sticks far too much out to use in a manual lathe, and was wondering perhaps you have to mill the quick change tool holder to allow you to back the insert holder inside the holder slot...

I have the same issue. Thank you so much for sharing your solution to this problem. I’m going to do the same.

Thanks mister.

I just may do that, greetings from Canada.

now THAT is perfect! i have the EXACT same issue! thank you sir!

As i experienced in my chinese mini-lathe, after having broken a lot of parting-inserts, the goal is to use the tool upside down and - of course - opposit revolution direction. Using this configuration helps the chips falling down for gravity, so leaving the work free from them, allowing the insert to freely cutting. I have no risk of un-screwing the mandrel, as it is fixed to the lathe nose with three 6 mm screws and nuts ( 4 screws for 4 jaws mandrel ), the only risk is for the compound that could be snapped out, but only if too far much strenght would be applied ... ( i don't really fear of this chance ... ) Just three tips : 1 - be aware of construction steel, it is not so omogenous inside as silver steel or lead-steel can be, and so it gives variabile stress on the carbide tip, leading to broke it. So advance with hight attention ... 2 - if you hear a noise twistle, your tip is not cutting, but just touching your piece, this can lead to harden the piece, better have a bit heart and give a bit more turn of the knob. 3 - as i saw in many videos, enlarge the cut on both sides to give more space to the chips to fall down and get a more free space for the tip ... Using upside down tool and opposit direction, i was able ( this time using an HSS tool, 3,0 mm large, from Proxxon ) to part a 45 mm piece of steel ...

Just found your channel and Subscribed. Very nice work. I agree totally with your channel name. Good job

very much like my solution on my small lathe, i use a machinist jack, yours is more permanent and elegant

I'm old. My lathe is old and my tooling are old too. That's a great idea for QCTP but my old 4 way turret tool-post doesn't need it. For those hard to reach operations I still have my (even older) Lantern style TP. It and its tool-holders are plenty rigid and offer minimum overhang. Wakodahatchee Chris

Interesting... ill give it a try. After I replace the tool holder. Last carbide tip mangled it on the way out

Genius! I'm doing this now. Or tomorrow when I wake up. LOL

Great idea……I’m on it! You don’t try it you will never know!

Good idea, glad it worked for you - I don't think my lathe will be suitable for that mod.

cool idea. i noticed your tool holder moved during the first test cut.

Saw some people ran the lathe in reverse with the parting tool upside down. Supposedly breakage can be mostly avoided.

Interresting aproach! However, what's that on @4:12 ? the tool holder was not locked solid so it twisted, That way, the tool is not perpendicular to the workpeace.. Normally that's a recipe for disaster when parting off..

Having a crappy toolpost is not helping.

I think it would have been much easier just to thread the bottom of the tool, and put a screw in it long enough to reach down to the bed of the cross slide, and used a nut to tighten it, Think it would have done the job?

Thats NOT a parting tool.... A grooving tool, yes. Can be used as a parting tool for small diameters and even a turning tool if small cuts are taken. A parting tool it is not!!

Bored to tears befoe1/3 of the way.BYE

I'm sure that works, but..... It's a one tool solution, when in reality all of your tools are being effected by the lack of rigidity.

thanks. stay away from Chinese parting tools is the first rule.