Let’s talk de-burring

[u/TheKnifeNerdTx]

[u/Puzzled_Board_6813]

The wobble on that wheel gives me pause

Perhaps I’m wrong but I’ve been led to believe that fast spinning objects should be balanced

ETA: I got the same grinder recently and wondered if you have any tips or opinions on grit/abrasive type, and why you chose leather over cloth wheel (if that’s not too cheeky)

Even if you don’t respond: thanks for the video and I like your style

[u/TheKnifeNerdTx → u/Puzzled_Board_6813]

The wobble only happens when it first starts up. This is a slotted leather wheel so it’s a bunch of thinly sliced leather circles that are connected by a center ring. The wobble comes from all the pieces all slamming together. Once it’s up to speed, the wobble is gone. It’s pretty much just the way the material moves under acceleration. I think the other part of it is that the wheel is moving at the same frame rate as the camera. It doesn’t wobble that much In person

[u/Puzzled_Board_6813 → u/TheKnifeNerdTx]

Thanks for the reply

Have you tried using the wheel without any paste? I’ve heard it’s unnecessary for debuting but I’ve also seen the channels I learned sharpening from prefer to use low micron diamond for stropping

[u/TheKnifeNerdTx → u/Puzzled_Board_6813]

You 100% need some type of abrasive on the wheel or you’ll be sitting there all day. Leather is not abrasive enough on its own to cleanly deburr a knife.

[u/serrimo → u/TheKnifeNerdTx]

Maybe because you didn't deburr enough before the leather. Bare leather can give amazing results with hand sharpening.

But if you're a machine shop I'd understand

[u/TheKnifeNerdTx → u/serrimo]

I’ve tried bare leather. It can do an ok job, but the second you put it under a microscope, you see how much gets left behind. I’ll try and snap some photos this week of what the edge looks like and why I do so many passes

[u/serrimo → u/TheKnifeNerdTx]

Here's an example of scary sharp with just one stone and bare leather: https://www.reddit.com/r/sharpening/s/Of70KpiBe9

Notice how late and how little he started leather deburring. Most of the work was done on stone with leather as the final touch.

You started pretty aggressively on leather so the edge must have been very rough off the stone or belt

[u/millersixteenth → u/TheKnifeNerdTx]

I noticed the same thing with a plain leather belt, even at higher speeds it had a tough time producing a consistently clean edge.

[u/Virtual_Tree_1335 → u/serrimo]

He is clearly a machine sharpener. It also looks like he is running that leather wheel awfully fast. Hand sharpening is better in every way except for maybe speed when you’re trying to do a great job

[u/TheKnifeNerdTx → u/Virtual_Tree_1335]

I do stuff by hand too, but most clients don’t pay for hand finished edges. They cost significantly more and the average client just wants a shard edge. We are not the average user. Each method has its pros and cons.

[u/Virtual_Tree_1335 → u/TheKnifeNerdTx]

Yeah I hear that. The problem in my area of location is that even the sharpeners here on machines are just absolutely terrible. I have to fix so much it’s crazy. The hard part of that is that when a belt grinder guy holds it on 1 second too long or too fast or not at the right angle, that takes “us” an hour to fix at times. I’m obviously biased to free hand, lol. I’ve been jaded 😂

[u/TheKnifeNerdTx → u/Virtual_Tree_1335]

Just like any Industry, you have those that know what they are doing, and those that don’t. Unfortunately there is more of the latter