Rob Frink 9" disc

[NickWheeler]

John, Wade Colter has a similar train of thought. He's got "paint and body man" in his blood, and so he was very familiar with the Stik-it gold discs. He has a bunch of 6" disc sanders in his shop because he can use the rolls of Stik-it discs. I've thought about it a lot... just haven't ever done it.

 

[messermacher]

I'm telling you, my way of thinking is, bigger isn't always better. I use the little disk 3 to one over the two 9" disk that I have set up on the same bench. I keep 80 grit on one, 400 on the other then I have all grits for the little disk ready to be switched out, from 80 - 2000 grit.
I have all 3 set up with foot switches, (as is several other things in the shop) so would recommend the foot switch to anyone that has a disk grinder.

 

[Mike Krall]

If you exaggerate the conical shape of the beveled disc, it's easier to see what I think Mike is talking about. A radial axis from the center to circumference of the disk is a perfectly straight line. Or "flat" in one dimension. But make another line at right angles to the first, intersecting it at the halfway point like an "x". The surface of the disc is slightly convex in this plane. So the end of your hollow grip would be flush to your guard from say "top view" but from "side view" it would have a slight "C" shaped glue gap.
I don't know if this clarifies anything, it's hard for me to explain.

I'm clarified... unless both of us are "persons unclear on the concept"...

I'm really curious how a 1 deg. disc is used. I get that it allows a long blade to be ground without "scuffing", but where does flat come from?

Mike

 

[NickWheeler]

It's just like magic, but slightly different.

Doing the math in my little brain, I'm going to say it's somewhere around 1 thou off of flat for a 1.5" blade. Don't hold me to that, that did not include any paper or pencils. I could figure it out, but I'm too tired for right now.

I think you guys have a valid question, but are also overthinking it in your mind and picturing a big 'ol convex cone.

I'll try to get pics of both of them in use and see if that clears up the mud at all

 

[Mike Krall]

It's just like magic, but slightly different.

Doing the math in my little brain, I'm going to say it's somewhere around 1 thou off of flat for a 1.5" blade. Don't hold me to that, that did not include any paper or pencils. I could figure it out, but I'm too tired for right now.

I think you guys have a valid question, but are also overthinking it in your mind and picturing a big 'ol convex cone.

I'll try to get pics of both of them in use and see if that clears up the mud at all

Nick,

Thanks... I'm OK on both the explanation and the pics & more... I do like "show me"...

Am I clear on the idea, though a 1 deg. disc does "flat to the eye", it won't do "flat enough" for spacer, guard, pommel faces? Like a person would need another grinder with a flat disc for that?

Mike