Excellent work as always Matt 🤠

@TheSharpeningGuy

Жыл бұрын

Thanks!

Man that cutting off the burr trick is cool, I'm gonna try and see if I can get that to work next time I sharpen. Removing the burr has always been hard for me... I get it done but I feel like I struggle more than most people in videos I see.

@TheSharpeningGuy

7 ай бұрын

Removing the burr well is definitely important, and I think a lot of people struggle with it. Here is another video I made just on the topic of burr removal that you might find helpful. kzread.info/dash/bejne/rKyltMmte9eed7Q.html

@5dstrix

7 ай бұрын

@@TheSharpeningGuy thanks for the reply, I'll check it out!

Is there a belt sander that is made to be used with wet belts? That way the steel on the edge would always be as cool as possible.

@TheSharpeningGuy

5 ай бұрын

There are some made, but none of them have been good enough to make it into mainstream use by many knifemakers yet. Dipping it in the water like you see me doing works well and the blade barely gets warm.

@r0ckworthy

5 ай бұрын

@@TheSharpeningGuy The problem I see is the videos where you're doing some major reshaping/reprofiling of the blade, and the belt is going so fast it's making a shower of sparks fly off... That's got to be removing the heat treatment of the steel on the edge and at least a few mm behind the edge. And that's right where you need the steel to be behaving it's best.

@TheSharpeningGuy

5 ай бұрын

The edge never got anywhere close to being too warm. Most knives would honestly get hotter than this if you wash them off with hot water from the tap in your kitchen sink. As far as the sparks go, that is just because of the high carbon content of the steel in this knife. Some of the cheaper stainless steel knives I thin don’t spark at all. On the other hand, white #1 steel has so much carbon and is so pure that it sparks even on a wet wheel that is running a water bath despite the blade constantly having water on it. So this knife didn’t get any warmer than any of the knives that don’t spark, it just has metallurgy that is going to make it spark. Many people don’t realize, but almost all of the most respected bladesmiths in the world, like Murray Carter (17th generation Yoshimoto Bladesmith and ABS Mastersmith) and Bob Kramer (ABS Mastersmith) just to name a couple, use belt grinders and/or abrasive wheels in the making of their knives even after they heat treat the blades. So using the tool properly and knowing what you are doing is way more important than the specific tool itself. Also, just practically speaking, I’ve sharpened knives professionally for almost 14 years for professional cooks, chefs, butchers, barbecue people, etc. and well as home cooks, hunters, fishers, and so on. I’ve had many people tell me that I gave them the longest lasting edges they’ve ever had in their knives, but I’ve never had anyone complain that the edge dulled prematurely. That wouldn’t happen if I was damaging the heat treatment of the blades.

@r0ckworthy

5 ай бұрын

@@TheSharpeningGuy At what temperature does steel burn bright yellow? In other words, those sparks are tiny bits of burning steel. They had to get heated to, say, 3000F to glow like that. Logically speaking, if a tiny sharp edge of silica or whatever your sandpaper is made of, strikes the steel fast and hard enough to heat the steel to 3000F, however briefly, then I'll bet you the first mm of edge steel is incredibly hot. Besides that though, if I'm sharpening any blade on a belt making sparks, the entire blade all the way back to the spine gets too hot to even touch with my bare hands. Far hotter than hot water from the sink. So again, imagine how hot the steel is 1 mm from the edge, especially considering the inverse square rule of temperature to distance, not to mention how little material there is near the edge for heat soak/conduction. I'd like to see a rockwell hardness test done somehow, just on the very very edge, after a sharpening job on a full-speed belt grinder.

@TheSharpeningGuy

5 ай бұрын

Then obviously you are doing something very differently than I am, because my blades don’t get anywhere nearly as hot as you are describing.

How do you make the thing under the belt?

@TheSharpeningGuy

Жыл бұрын

I should make a video on it, but basically you shape a piece of rubber to the shape you want. Then you attach graphite platen cushion to the top of it so the belt can slide over it, and then you attach the whole thing to your platen somehow.

@nothing9447

Жыл бұрын

@@TheSharpeningGuy thank you for the info 😊 ill try make one!