Why Grind Bevels Many Times?

That's phenomenal... I need to get a wheel now. I'm impressed with their plunges and symmetry at that speed.
 
J. Keeton said:
After reading this thread, I know one thing for sure.... I'm taking way too much time grinding my bevels.:oops:

I need to up my game! :thumbsup:
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lol, well it's always better to do it right than to do it fast if you aren't yet able to do them both. It's funny, I often spread out my work on a knife over quite a while, maybe working on 2-3 different ones during that length of time, so by the time I get around to starting a new knife I pretty much have to retrain myself to grind, which is a bit frustrating, but I'm usually not in a hurry so as long as I don't mess up I'm ok.


~Paul
My Youtube Channel
... (Just some older videos of some knives I've made in the past)
 
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J. Keeton said:
That's phenomenal... I need to get a wheel now. I'm impressed with their plunges and symmetry at that speed.
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No need for irony .If you watched first video he make good statement before he start to grind .....some maker choose to grind slow and they make excellent knife , i choose to grind fast .
Symmetry and plunge have nothing with speed but with skill of knife maker .I doubt in my skills so I use jigs......on 8000 ft/m:D
I think that here we agree that you can grind in any way you want and feel comfortable .BUT you can t sell to me that story that grinding hardened steel with 320 grit belt is not much slower then with 40 grit. I inhaled too much grinding dust to get over that statement :D
 
I only use a 320 AO belt for some handle work: How long would this take with a 320 belt?

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Me bout 8 hours but then I'm loosing a lot of time changing belts.
 
Yep I really appreciate this thread... Going to influence me to try some new things! It's great so see how you more experienced guys get though some steel!
 
Natlek said:
Again you say that :) No my friend , IT IS slower...........a hundred times slower .How many days it will take you to grind ONE side of this blade with your AO 320 grit belt ? It is 7mm thick steel and about 4 inch blade ...I can grind that in TEN minutes , considering the time I waste to cool blade between grinding because it is hardened 52100 steel ..........


I really would like to see what kind of blade you grind with 320 grit belt ?Any picture to share ?
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Approximately how many blades can you grind on your rough belt before it dulls and starts taking longer time?
 
Horsewright said:
I only use a 320 AO belt for some handle work: How long would this take with a 320 belt?
{snip}
Me bout 8 hours but then I'm loosing a lot of time changing belts.
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Now, is that 8 hours grinding with a 320 AO belt? OR, with your normal method of grinding? 8 hrs seems pretty good to me for that many blades.
 
Ken H> said:
Now, is that 8 hours grinding with a 320 AO belt? OR, with your normal method of grinding? 8 hrs seems pretty good to me for that many blades.
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Oh heck no Ken. I start with a worn 36 grit ceramic and grind a 45 off the edge. Then a fresh 36 ceramic to take the bevels part way up. Then a 50 ceramic to finish the bevels. A 120 ceramic to clean up and even the plunges and clean up the ricassos. I have six file guides to help set the plunges so I do six at a time. That's my pre ht grinding. Post ht, start with a 50 then a 120 then a 220 AO. On the mono steels then go to a green scotchbrite and they are done. All damascus goes on at 400 and then 600. I do all the ffgs first and then the hollow grinds. Post ht grinding is even faster. I worked 4 hours yesterday and got 30 blades done including etching the 14 damascus blades. That included fighting two a bunch one to the point of tossing it and starting completely over with a new blade. Bolsters and handles go on today.
 
Bob Duguay said:
Dave how many blades can you get out of a fresh 36grit belt?
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I get a lot Bob. I really do most of the work with the 50s. In that pic with the blades on the table ready to go I'd say probably 2 (36s) and 3 or 4 (50s). Course the blade styles make a diff too. those two big dammy kitchen knives took a lot more grinding than that little Poco next to em. And there were a few that ground post ht like the filet knife and some others.
 
Maelstrom78 said:
For sure I like the cork + green chrome finish. I don't even know how to describe it. Like it almost has a texture? A visual texture that is different somehow. I've been digging going from an A65 gator to 400,600,800 cork.

I agree with you that you need a pretty fine finish to go to a fine scotchbrite. Here's a crazy idea.... what if you put some green chrome polish on that fine scotchbrite belt?!?
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as Stacy mentioned, the green chrome won’t work on a scrotchbrite belt. It works great on Cork. I do all of my bevel grinding post HT. So when I’m done! I’m done and don’t have to go back over blades. How many knives you can bevel grind with a 36g 60g depends on the size of the blades. I make Culinary knives so after Petty/Parer they are 7” and up. I use VSM Ceramic from Tru-grit and on my larger blades I may only get one or two before the amount of heat from a worn belt means they get moved to the non-critical pile. I’ve been through the $$$ and it still costs me about $10.00 total for a knife I sell for $400.00 plus. So the cost in belts is low.. Stay safe & have fun!
 
I have been out of town for two weeks.

I would have used 220, but 320 was the closest I had to it. It worked fine and not much slower than a coarser grit. I have a p icture. Can you tell me how to post it? I don't see an option for that.
 
Natlek said:
Again you say that :) No my friend , IT IS slower...........a hundred times slower .How many days it will take you to grind ONE side of this blade with your AO 320 grit belt ? It is 7mm thick steel and about 4 inch blade ...I can grind that in TEN minutes , considering the time I waste to cool blade between grinding because it is hardened 52100 steel ..........

Thanks for your reply.

I'm using 3.18 mm (1/8 inch). It really didn't take long to grind the bevels and I only did it once. Additionally, I did NO hand sanding. I'll post a pic if you tell me how. I haven't figured that out yet. I am new to the forum.

If you object to 320, what about 220? I didn't have any, or I would have used that. Honestly, this method is a time saver.

By the way, that is a beautiful knife in your picture.
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I really would like to see what kind of blade you grind with 320 grit belt ?Any picture to share ?
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