Tip on Belts

thknives

thknives

KnifeMaker
Joined
Jul 9, 1999
Messages
187
I was looking at my grinder platen and noticed a 1/8" wide and at least 1/16" deep grove in it. Where the heck did this come from?

Sure enough, after checking all my belts ther e was a sample belt from Klingspor (new ceramic abrasive) that had grit on the back side. Usually there is some, but not that much. I turned over the belt, put it on the grinder and started grinding into a piece of steel and sure enough there was one spot where it cut like the grit side.

Needless to say I am all P*&%$#@! about this. Now I have to regrind my platen and it is D2 at 61 RC.

When you buy belts, look at the backside of them for any abrasive to avoid this.

Thomas


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Haslinger Custom Knives
WWW.HASLINGER-KNIVES.COM
thknives@home.com
 
Hi Thaqmas here's Frank again and soon. Thomas Why not over lal your platen with a piece of TEMPERED glass about 3/16" tick? It will take much more wear and tear than the D2. I and several other makers I know have been useing this for years, I use two layers of two way carpet tape -the kind without the fabric in it, Roger Hatt has his attached with silicon. Sure does work great! I was pleased you had a good show. I sure was super pleased to win that art folder award!!! My e-mail is niro@telus.net if I can help you further.Frank.
 
I've been using regular 1/4" thick plate glass glued onto my platen with JB Weld. I bought 10 pieces of 2 x 10" glass at the local glass shop for $3.50 each with the edges nicely rounded. I glued the first one on with the JB Weld and it has cracked in a couple of places, but the epoxy is holding it tight as hell so I haven't worried about chipping it off and gluing another one on. I have checked and the cracks don't affect the surface flatness as far as I can tell.

Chuck
 
The man to cut the tempered glass is the glass cutter-glazier-just as the man to make the knife is the knife maker. I believe plate glass is a pretty bad way to go.I have heard of several guys having the plate glass shatter.I have not heard of problems with the tempered glass. Here in Canada where the cost for all materials is always more than in the U.S.A. the going price seems to be $10.00-well worth it for the results.
 
You can buy corell glass for the platens last a long time . Just epoxy them on.
Those dips sure do make a funny grind!

Try the new 3m 976 yellow ceramic belts. There kick butt! POP has them
Koval also!


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Web Site At www.darrelralph.com
MADD MAXX !
 
Frank,

I think that CL's point was that no one will cut tempered glass that he knows of. The same goes for me. I checked with some local glaziers, and whether this is true or not, was told that the glass must be cut prior to the tempering. I opted for the Corning glass instead.

Brett
 
Just could be that what I got was also corning glass and I wasn't told since it was still tempered.I still believe however that plate glass is just asking for major trouble. Frank.
 
Thank you Kaos, my point exactly.

Tempered glass will shatter if it is attempted to be cut. It must be first cut then tempered. I am also afraid that tempered glass would tend to shatter if it is unevenly heated.

One other little known fact is that tempered glass is not perfectly flat but does tend to have "waves" in it.

The Corning glass that Mr. Ralph brought up is a viable material.

I am no expert by any means in this area but I discussed this at length with a very good friend of mine that is a glazier.

C Wilkins
 
I was unable to find tempered glass for a 2" wide platen(supposedly the machine could only go down to 3") so I am trying a couple of pieces of laminate glass. So far so good. At least if it doesn't work it shouldn't explode on me.

J.
 
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