Glass platen problem.

I just installed the glass platen from the same seller. I am hoping for good results. I rough ground one blade so far and it looks fine to me. But I will see what time tells.
 
Looks as though I am having the exact same problem. Haven't even finished one knife yet. Already vertical dips in the platen. Sigh... Time to contact the seller.
 

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I will have to check mine when I get home. I went cheep and got my glass from a fireplace store. Thy let me pull the glass from there junk stoves. I'm thinking I Installed the glass last year about this time. It has been great for me so far. I think mine has some scratches like that but I'm not sure.
 
Thanks man.

I am going to continue using it to see how the blade finish turns out at 220 or higher. I am hoping the dips won't affect it.
 
The vertical scratches won't cause as much a problem as wear hollows going across often created by lots of contour grinding. I expect the stuff sold to you was not of the quality most of us have been getting. Sorry you're going through this.
Frank
 
Frank Niro said:
The vertical scratches won't cause as much a problem as wear hollows going across often created by lots of contour grinding. I expect the stuff sold to you was not of the quality most of us have been getting. Sorry you're going through this.
Frank
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I agree. There isn't gouges or concave dips forming as of yet. I contacted the seller. I will see what he says. Hopefully get my money back and then purchase from USAknifemaker.
 
check the belts you used. It happened me only once in many years, but a ceramic belt had some abrasive grains glued to the inside of the belt.
 
Do you have a local glass shop?
Should be much cheaper, and you know you'll get the right stuff. I'm using "neoceram" fireplace glass, and even making knives full time the 4 month old piece of glass on my platten isn't showing any wear.
 
The seller (VWJackStraw) replied to me right away. This is what he said:

When you are grinding the ceramic grit gets between the back of the belt and the ceramic glass and creates the lines/scratches you are seeing. This is normal, and overall the glass stays flatter much longer and runs much cooler than a steel platen. If you are unhappy with the performance of the glass please send it back and I can get you refunded. With the exception of maybe a solid carbide platen all platen material is going to show signs of wear with use.

I will continue to use the platen to see how it turns out. I had cleaned the backside of the belt by hand before putting it on the grinder. Maybe it wasn't clean enough.
 
I installed a carbide platen a couple of weeks ago and BAM, problem solved. I'm thinking it'll last decades if not forever.
 
Another forum member made a special order and I got lucky enough to get one too. Cost was $200. It came with perfect 1/8" radii on the edges which makes plunges a breeze. I know $200 is kinda spendy but I'd do it again in a heartbeat. Pics aren't really necessary as it looks like any other platen liner except its grayish black like most carbide.







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Darrin Sanders said:
Another forum member made a special order and I got lucky enough to get one too. Cost was $200. It came with perfect 1/8" radii on the edges which makes plunges a breeze. I know $200 is kinda spendy but I'd do it again in a heartbeat. Pics aren't really necessary as it looks like any other platen liner except its grayish black like most carbide.
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Damn I would be in at that price for sure. Nothing is worse than a headache shit tools causes. Could you share the members name so I could contact and get the details?
 
bmilleker said:
Damn I would be in at that price for sure. Nothing is worse than a headache shit tools causes. Could you share the members name so I could contact and get the details?
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Yes! Please do share the info of the Member that can make these carbide Platens? I've used the Pryocem for years but it sould be so nice not to have (*&^% with it anymore!:thumbsup:
 
It’s good to see that mine isn’t the only one like this. I am just gonna run it for a while longer and see if it gets worse.

Carbide platen? That would be really nice.
My grinder came with an A2 steel platen, but I guess it hasn’t been heat treated. Maybe I should get another and have it heat treated professionally?
Or make one out of something like 1084.
 
I wore out 2 or 3 glass platens, then got a steel one from Nathan. Either A2 or D2 don't remember, but it's still fine after a few hundred blades. I can also surface grind it in needed.
 
bmilleker said:
Damn I would be in at that price for sure. Nothing is worse than a headache shit tools causes. Could you share the members name so I could contact and get the details?
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I'll leave it up to him to chime in if he wants to.
 
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