The last cutoff/parting tool I'll ever buy?

Very clever!
I like the six-pack idea of the tool.
It reminds me of something... but I can not recall right now..
six-pack.jpg
 
I think your idea of a parting tool is excellent. I have myself, tried various types of parting tool arrangements and I have had some serious breakages. I now wear a full face shield and make sure that I clear the place around me to make a quick "getaway" in the event of a jam.
I will definitely look for a joiner blade and make a parting tool like yours.

A good idea that is well executed
Regards Basil
 
Thanks forpsting this. I just may have to try it.
 
Great idea and good explanation. I just happen to be going to HF tomorrow, and added one blade to my shopping list. Thank you.

Lornie
 
Great idea. I liked the idea someone had of cutting parting tools out of saw blades then putting them in a parting tool holder. This is better than that!
 
juiceclone said:
This may be the last parting/cutoff tool I will ever have to buy.
Not elegant or complicated but it works.
I got a 4 in “plate joiner saw blade” from Harbor Freight for $10 bucks and a ¾-16 x 4in bolt and nut from a hardware store for another sawbuck. The .750 bolt fits my AXA QC tool post boring bar holder correctly, and I cut an .875 x .093 shoulder in the head of the bolt …. (needs to be slightly less than the thickness of whatever blade you use) The HF blade has 6 carbide cutters aprox .140 thick so that’s the width of the cut. I ground two of the carbide tips to have a flat cut, and one of those I thinned to the thickness of the blade, approx .110. I drilled and tapped an index pin hole in my boring bar tool holder (the only change to that) and drilled 6 index holes in the blade so it can’t turn when cutting. I did find this necessary because I tried a prototype without and under heavy load it would shift down. Of course that could be a plus because it will stop cutting if you go in too fast :>)) I can see that in a deep cut I might have a problem with chip blockage, but I can always grind clearance deep on one spot for that. This thing is SOLID. All that metal above and below the actual cut point does not flex, particularly from side to side as I have seen in all other cutoff/parting tools . It seems to be flexing down the entire cross/compound on my Chinese lathe when I push it too much.. There are other blades available everywhere that could be thinner and ?better? suited to this. Most of them have many more teeth some of which would probably need to be ground off to be suitable. I got this idea from another? Forum somewhere where the guy ground part of a blade to fit his cutoff blade holder.View attachment 95684 View attachment 95685 View attachment 95686 View attachment 95687 View attachment 95688 View attachment 95689
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Clever! It looks like you are using the boring bar holder for the QCTP. What do your index holes mate to? Did you drill a corresponding hole in the boring bar holder?
 
Great idea! I have had good results parting by running the lathe in reverse and turning the tool upside down. It seems to push off instead of digging in if you get too aggresive. I dont think ive ever broke an insert parting in reverse. I have broke tons of in forward lol. With your setup here, that would be easy to do, and you could still get next to a shoulder if needed.
 
Gunrunner you need to order a set of these for the Z axis hand crank. Bill did you just spit coffee on your monitor? :rofl:

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