The fucking irritating knife-making thread.

The Something Awful Forums > Discussion > Hobbies, Crafts, & Houses > The fucking irritating knife-making thread.

keep it down up there!: Jun 22, 2006; How's it goin' eh?

His Divine Shadow posted:

I dunno if this is the right place to ask this, but I am building a small belt grinder that will use 2x36" sanding belts. I intend to use it to sharpen chisels, plane irons and knives. It'll be a home built contraption like a wooden harbor freight lookalike. My question is where do I want to go slow and where do I want to go fast?

It seems like those that have bigger grinders like 2x72", prefer really fast speeds like 6000 SFM, I assume it's because it hogs of more metal faster and zirconium belts work better at higher speeds unlike AO ones. On the other side there's machines like the sorby pro edge which has a very slow speed like 700 sfm. What gives, why are so many people saying go for speed, but one of the pro sharpening tools on the market goes slow?

Is that just because it's for sharpening and doesn't need to remove as much material as other metal shaping operations, or is there more to it? Perhaps finer grit belts work better on slower speeds?

At any rate I am building this with step pulleys so I can have a range of speeds. I think 890rpm to 3500rpm is a suitable range.

I don't have an answer to your question, but I was wondering what plans if any you are using to build it. Or are you designing it yourself?
I was debating picking up John Heisz's plans, if I can find a decent motor to run it off of. His is 2x72 however.

# ¿ Nov 5, 2015 16:27

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# ¿ Apr 27, 2024 12:09

keep it down up there!: Jun 22, 2006; How's it goin' eh?

Looks like the youtuber Trollsky is gonna be on Forged in Fire. That should be a fun episode. I love his youtube videos.

# ¿ Mar 23, 2016 15:19

keep it down up there!: Jun 22, 2006; How's it goin' eh?

mattwhoo posted:

And one more view. Still need to build a light box.

Here is a pretty cheap solution for a light box that you can collapse down.
https://imgur.com/a/HEvul

# ¿ Apr 25, 2016 15:48

The Something Awful Forums > Discussion > Hobbies, Crafts, & Houses > The fucking irritating knife-making thread.