Question About HSS Quality

[“Bill Hancox”Participant @billhancox]

I was pawing through a few boxes of my late father's stuff today and found a few 5/16" square HSS tool blanks marked: "5/16 MOMAX Cleveland G." Before I go to the trouble of grinding any I thought I would solicit comments about the quality. I can find Cleveland blanks on the net but nothing on the "G" grade.

Chip Away

Bill

[“Bill Hancox”Participant @billhancox]

[Peter KroghParticipant @peterkrogh76576]

I don't know about the 'G' but the Cleveland MOMAX is a really excellent HSS in my experience.

Pete

[“Bill Hancox”Participant @billhancox]

Posted by Peter Krogh on 10/12/2015 00:23:27:

I don't know about the 'G' but the Cleveland MOMAX is a really excellent HSS in my experience.

Pete

Thanks Pete. I will give them a try on my Speed 10.

Bill

[Ady1Participant @ady1]

Good stuff, best at slow speed on tough metals(ie backgear) and great for shaper machine work

Saves you using carbide on tuff jobs

Edited By Ady1 on 10/12/2015 00:52:53

[Ady1Participant @ady1]

Harder to grind if it's the good stuff too

[“Bill Hancox”Participant @billhancox]

Posted by Ady1 on 10/12/2015 01:53:12:

Harder to grind if it's the good stuff too

Ady1

Thanks. I ground one. Tough to grind is right…. very tough but they hone to a super edge. Excellent results with test cuts on a piece of 316 SS rod @ about 450 RPM; very slow feed and .0015 cut. I am happy. My dad offered me these blanks a few years ago but I passed on the offer as I was using only indexable tools at the time.

Bill

[Ady1Participant @ady1]

Don't ever plunge cool, or you will microscopically crack the edges. Air cooling only when grinding

[“Bill Hancox”Participant @billhancox]

Posted by Ady1 on 11/12/2015 00:55:25:

Don't ever plunge cool, or you will microscopically crack the edges. Air cooling only when grinding

Now you tell me (ha-ha). Thanks again. I will keep that in mind. I think I will start grinding a set sometime soon.

Bill

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