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[EdK]

Ken,

Can you post a link to where you got the stuff?

Thanks,
Ed

[PixMan]

Ed,

The Ø 1-1/2" 316 stainless came from http://www.onlinemetals.com/, while both the steels came from http://www.speedymetals.com/

For the sale items at Speedymetals.com, click on the red tab for "Fire Sale". not much there but that one seemed a decent deal if you're as comfortable as I am with plowing through that flame cut surface on two sides.

In my photo the square bar closest to the Ø 1" TGP 4140HT is showing the flamecut edge. The other surfaces are the mill scale that can be equally abrasive. I figure they'll easily clean up to about 5/8" square, perhaps a little bigger. I think it's always nice to have a little bit of pre heat treated alloy kicking around for when a project needs a little hardness on the stock. Machining PHT 4140 generally works better with carbide tooling, though HSS works if you're careful and use very conservative cutting speeds.

[EdK]

Got these inserts today to use in this tool that I've had for some time now but had no inserts to use it.

Ed

         

[PixMan]

What's the nomenclature off the insert box (back side), Ed? They appear to have a much larger radius than I might choose for that type of tool. They appear to be an SCMT32.52-MM. That MM chipbreaker is the designation Sandvik Coromant uses for stainless steel grades, it changes to PM for steels, and KM for cast iron grades.

Myself, I'd go for an SCGT32.50.5 or in ISO metric designation an SCMT09T302 (.0078"/0.2mm radius) insert as I'm often trying to put a 45º chamfer on a short shoulder, not leaving much room for a big radius tool.

I could have helped you find some (or sent you some, gratis) if I knew you needed something like that.

If those are a grade 42xx, they're for steel. If they're a 20xx or 10xx grade, they're primarily for stainless. Of course whatever they are they'll work in aluminum or the "wrong" materials at the lower cutting speeds you can run.

[EdK]

Ken,

I got them for chamfering. It appears I got the wrong ones. Oh well, I can always get some of the smaller tip radius version. Here's what they are.

GC3005 Grade, Multi-Layer Coating, SCMT 3(2.5)2-KF, 3/8" iC, 0.0315" Corner Radius

Ed

[PixMan]

Cast iron grade, and a very hard, wear resistant one at that. It'll take you a lifetime of abusing them to use up the 40 corners, so no worries.

You mostly use the long edge of the insert for the chamfers anyhow so the bigger corner radius is of little consequence. It only makes a difference when you have a short shoulder (low size differential between the two diameters) that the sharper corners help.

[EdK]

These are from Shars. Inspector number 5 must have been drunk that day since all of the height adjusting nuts have drunken threads. Just like my last batch from CDCO Tools.

At least once I get the knurling tool project done, which I aborted to work on the mill power feed, I'll give it a good workout making new thumb nuts.

Ed

   

[PixMan]

And that, my friend is exactly why I am willing to pay and extra $2 to buy mine from Jeff Beck of Tools4Cheap.net. Jeff's holders have much better height adjustment screws, though thanks to Mayhem's generosity I've been able to upgrade all the tool clamping setscrews with higher quality ones that fit the hex key better.

[EdK]

(01-30-2015, 09:10 PM)PixMan Wrote: And that, my friend is exactly why I am willing to pay and extra $2 to buy mine from Jeff Beck of Tool4Cheap.net. Jeff's holders have much better height adjustment screws, though thanks to Mayhem's generosity I've been able to upgrade all the tool clamping setscrews with higher quality ones that fit the hex key better.

More like $7.10 more, but your point is well taken. I'm tempted to buy one from Jeff and compare it to the Phase II, Shars and CDCO Tools versions.  

Ed

[Mayhem]

I too buy mine from Jeff. The 4 screws that hold the tool in are crap and I just toss them and put good quality ones in (I picked up a box of 100). I've not had a problem with the height adjusting screw/nut.

I bought three from Jeff when I was in the US in October and wouldn't hesitate to buy more. He's even willing to ship them to me.