Cool hard turning video with sort of shear tool

[MattiJ]

https://m.youtube.com/watch?v=2YA0CSA_sx8

Never seen turning done like that.

[Arcane]

Everybody who watches that is probably thinking "What can I rig up so I do that on my lathe?"

[mattthemuppet]

dang

looks like a shear tool that they rotate slightly to use a fresh part of the blade for every bit of the cut.

[MattiJ]

Everybody who watches that is probably thinking "What can I rig up so I do that on my lathe?"

Was actually thinking of some sort rotating toolholder one day after seeing the Sandvik Y-axis parting tool

https://m.youtube.com/watch?v=BWmdsB_VUYg

[CCWKen]

I don't have a CNC anything but those 1000*+ chips would start a fire at my place.

[MattiJ]

I don't have a CNC anything but those 1000*+ chips would start a fire at my place.

Been there done that..

[MattiJ]

Lathe Skiving is kind of related process:

https://youtu.be/n5b7IimlLzg

Now I have to admit that I never thought of that!

Or power skiving that looks almost like cut knurling:

https://youtu.be/lpzx_8pD2sM?t=38

Bet that would make nice knurling every time without buggering the start!

[dian]

why would that be faster, or the y-axis parting?

[epicfail48]

Was actually thinking of some sort rotating toolholder one day after seeing the Sandvik Y-axis parting tool
https://m.youtube.com/watch?v=BWmdsB_VUYg

I'll admit, I'm very confused as to why that seems to work so much better... I'm assuming that its something to do with the cutting force being directed along a stiffer axis meaning the tool can take a higher load, but I still feel like I'm missing something

[MattiJ]

I'll admit, I'm very confused as to why that seems to work so much better... I'm assuming that its something to do with the cutting force being directed along a stiffer axis meaning the tool can take a higher load, but I still feel like I'm missing something

Yeah, stiffer tool. Basically zero overhang from the tool itself and no flex.

[vpt]

Everybody who watches that is probably thinking "What can I rig up so I do that on my lathe?"

I've already tried that sort of thing.

[Dan Dubeau]

It's all about where you direct your force. if you can direct it in a direction that is stronger, you can then feed faster.

THe original video is cool, never seen anything like it. I bet that would be great for turning crankshaft journals, or other bearing surfaces deep between sidewalls. it allows a MUCH stouter tool to be used.