New blade with Hollow Grind

DanF said:
Anyone use a radiused platen? I think I've seen them at 36 and 48".
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I have never seen one in person. I have read posts from Nathan the Machinist concerning them but since I don't hollow grind I never pursued one. It does seem like a very logical approach. And take this questions for what it's worth (coming from a guy who doesn't hollow grind) but isn't the rubber of the wheel a positive when it comes to hollow grinding? How would a belt splice act running across a rigid platen where the finish is so crucial?
 
John Wilson said:
I have never seen one in person. I have read posts from Nathan the Machinist concerning them but since I don't hollow grind I never pursued one. It does seem like a very logical approach. And take this questions for what it's worth (coming from a guy who doesn't hollow grind) but isn't the rubber of the wheel a positive when it comes to hollow grinding? How would a belt splice act running across a rigid platen where the finish is so crucial?
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I agree. I'm thinking about getting a glass (ceramic) plate for my platen. I examined my platen the other day while I was cleaning it and I can see visual wear where I do my grinding. I don't think I'm going to do much hollow grinding.
 
DanF said:
I was tempted to try one of Nathan's but I was afraid I'd mess up my flat grinding.
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Have you ever watched the you tube videos by SimpleLife. He has a video of him installing the glass platen from Nathan's. Interesting. He JB welds it on but he taps a small metal shelf for it to sit on.
 
only larger hollow platen that I have seen was the one Alec Steele made for when he did a sword. To watch it he ground to my eye upside down. I grind edge up everything and he ground it edge down.
I use a homemade 18 inch wheel myself.
 
opaul said:
Have you ever watched the you tube videos by SimpleLife. He has a video of him installing the glass platen from Nathan's. Interesting. He JB welds it on but he taps a small metal shelf for it to sit on.
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I'll make a note to watch that, thanks for mentioning it.
 
Kevin Zito said:
Lol I didn’t even know they made 20’s.
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If ya need a spare for your car!! I have a 12" wheel and am just starting to use it for grinds.
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This is my second attempt at a hollow grind on the knife I made using an old file. I'm really starting to like the hollow grinds. Once I get the grind established I find it easier to do than a flat grind?
 
opaul said:
Have you ever watched the you tube videos by SimpleLife. He has a video of him installing the glass platen from Nathan's. Interesting. He JB welds it on but he taps a small metal shelf for it to sit on.
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The shelf is there in case the JB Weld fails so the Glass platen dosnt get thrown out of your grinder at hi speed!
 
I don’t use any shelf at all. I coat the platen in JB Weld and lay it face down on the glass. Mine has been there for about four years. It’s getting time to replace the glass because the top two inches of the glass is worn down.
 
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