Copper Rods

[GT-6 Racer]

Turned some C102 full hard rods between centers. +0.000/-0.002” tolerance was the tough part with copper. Roughed with carbide and finished with a razor sharp 10 degree M2 tool. Amazing how much heat copper makes turning even with light cuts. Tap magic extra thick for roughing and wd40 for finishing seemed to work best

 

[Dhal22]

Purty......

 

[GT-6 Racer]

Even full hard it’s tough to get the finish. Had to hone the tool after every other part and go sooo slow, 400 rpm. That was only taking 0.020” in 3 passes per part. Roughing was easy though, 0.050” doc with carbide, making pretty razor worms.

 

[rwm]

Those are beautiful. What are they for?

 

[Weldingrod1]

Oddly enough I was cutting Copper too! Better electrodes for the spot welder.

Sent from my SM-G715A using Tapatalk

 

[GT-6 Racer]

Oddly enough I was cutting Copper too! Better electrodes for the spot welder.

Sent from my SM-G715A using Tapatalk

Hopefully your copper alloy was more free machining. Looks good !

 

[GT-6 Racer]

Those are beautiful. What are they for?

They are for a robotic welding fixture. Drilled and tapped on the ends. It’s a customer part so I don’t have any details.

 

[Braeden P]

Definitly more than close enough for gov't work! I have a hard time getting a 4'' long piece of steel to those tolorences with 0.00003'' runout, and copper is a pains so great job! That 10EE is very clean!

 

[GT-6 Racer]

Definitly more than close enough for gov't work! I have a hard time getting a 4'' long piece of steel to those tolorences with 0.00003'' runout, and copper is a pains so great job! That 10EE is very clean!

It’s a survivor. No rebuild, original paint. I love the thing. I scraped the compound slide last Xmas. Smooth as silk now. Don’t know how it was worn so much more ? Must have done a lot of short taper work at GE …. The rest of the machine has little wear …

 

[Braeden P]

That’s in great condition! This was my lathe when I first got it, looks horrible but the ways and spindle are great