Master Square Blades ?

[JoeLee]

Or a radial drill press.

Any name tags or anything on it ??

JL........

[JoeLee]

That's probably why Chernobyl went critical.

Too many knobs and not enough technicians to turn them all or remember what they do.
...

[JoeLee]

I was thinking they belong behind the meat counter and forgot to change.

JL....................

[JoeLee]

Agreed. That 5 1/2" square sell for around $350.

JL..................

[JoeLee]

I have to agree. I don't think any old MIG will do.
You're you're probably going to need a more elaborate machine with polarity adjustments and...

[JoeLee]

Won't be able to put a prick punch indentation in this as it's hardened. I can see how your method would work on soft steel or aluminum. But you did this...

[JoeLee]

It's square the way it's supposed to be. The blade must have warped over time from internal stresses. No way to ever grind it out.

JL......

[JoeLee]

My 4900 lathe did the same thing. It was vibration coming from the motor. Harder steel, 12L, brass etc. Dead sharp inserts, tried everything. It left...

[JoeLee]

Not happening.It's not the edge of the blade, it's the flat side that is hooked. It's slightly hooked just coming out of the base and then in the center....

[JoeLee]

Does the lathe leave the pattern on hollow tube, solid rounds or both?

JL.....................

[JoeLee]

My first lather was a Clausing 4900 series that I bought from a machinery dealer. They put some farm service / regular nothing fancy motor on it when...

[JoeLee]

I have a small Starrett square that I use quite often. The blade itself is square when checked up against my 12" master but the blade has a slight...

[JoeLee]

JT, You can give these guys a try.

https://www.mmtoolscarbide.com/store..._Products.html

M&M Tools Corp.
...

[JoeLee]

Don't bet the farm on it! There are a lot of companies that do things like that so you have to go back to them for replacements.

JL......

[JoeLee]

Another thing that might have been overlooked is it looks like a piece of pipe was in that chuck when he welded the jaws to the body. Pipe is not perfectly...

[JoeLee]

it's hard to imagine that you're cutting six flat spots as it's turning.

JL.......

[JoeLee]

Never heard the term before.

JL.........

[JoeLee]

Super glue would work too. If I had to do it that way I wold probably put a little dab of body filler on each side of the jaws cementing them to the chuck...

[JoeLee]

For a second I thought that was play in the cross slide screw. WOW ! Until I saw it was cutting the flats.

JL................

[JoeLee]

My thoughts exactly. Then he takes a grinder to the sides of the jaws to remove the weld probably creating side play in each jaw, making matters worse....