Almost Done With Paper Wheel Cart...

[darita]

So I finished making my stands.  I used my angle finder gauge to adjust the USBs parallel with the 1/2 speed grinder arbor.  I also used the straight edge to get the USBs in line with one another.  I did my best to follow the KG recommended set up as close as possible.  I also got some 10" x 1 1/4" slotted paper wheels.
1.  Do I need to true the wheels?  The surfaces are already lined up pretty well with the USB, however the wheel surfaces are very slightly crowned.
2.  The wheels slots are clean and clear on 2 surfaces, however on one side, all the slots are closed off with paper fuzz.  Do I have to cut that stuff off so that all slots are open?
Any other suggestions?

[Ken S]

The manufacturer of your paper wheels should be able to answer your first question. Do they sell their paper wheels with slots?

Ken

[darita]

Yes. They are available with or without slots.

[RickKrung]

I would clean that "fuzz" out of the slots, which is simply paper "burrs" from the slotting process.  As I understand it, the slots are for air flow for cooling effect.  If the slots are not clear on one side, it seems that air flow would be compromised. I would probably do this by drawing some sandpaper through the slot from the burr/fuzz side, being careful not to pull fuzz out/off the opposite side.  I would do this ONLY in the one direction, so as to abrade the fuzz off as it is pulled back into the slot.  If you pull the sandpaper out of the slot on the burr side, I think it would just create more burr. To avoid pulling a but out the other side, I think I would pull the sandpaper up from the bottom and out the top of the wheel without exiting the opposite side.  Just a concept, haven't tried it.  Another way would be to use a fresh safety razor and slice the burr off the corners.  I doubt having a slight chamfer in that slot will hurt anything. 

Several years ago, very shortly after Vadim posted about his paper wheel setups, I got several and a slow speed grinder, thinking I would do the same.  I found the paper wheels to NOT be true, but rather out-of-round, which created vibration and bumping of the blades.  I wanted to true them, but never tried, as I wasn't sure how to do it.  I think a sanding block supported on the USB is one way, but I was uncomfortable hand holding that.  I have a 12" swing metal lathe and thought about setting up a sanding block on the toolholder and using the crossslide for feed control.  But, I lost interest, partially due to the bother, but also because my conversations with Vadim took me in the direction of a two-step deburring process of using the SJ wheel and then 1µ diamonds on a rock hard felt wheel.  That has served me very well ever since and the paper wheels are just gathering dust.  I'm not even sure just where they are now.  I've since added a hanging leather strop as a final step in the deburring process.  Long way of saying, yes, I would true those wheels. 

Rick

[darita]

Well, the saga continues...I ran some tests with the slow grinder and was really have a problem with balancing out the paper wheels.  I took some suggestions and got a full speed grinder, well actually a variable speed, anyhow, it works much better.  First, I'm able to adjust the wheel mounting to get a much less wobbly wheel.  Secondly, at full speed, the wheels seem to smooth out a lot.  With the variable speed, I'll be able to slow it down a bit and find a happy medium between smoothness and heat reduction.  In addition, I was able to get this Delta model grinder at a greatly reduced price at Lowes.  I did have to readjust everything, but I think this will be a better setup in the end.

[AKMike]

You might try getting a wheel balancing system. Here is one example:  https://oneway.ca/products-category/sharpening-grinding-jigs/Balancing%20Systems

Mike

[darita]

You might try getting a wheel balancing system. Here is one example:  https://oneway.ca/products-category/sharpening-grinding-jigs/Balancing%20Systems

Mike

Will this cure a wobble in the wheels?  Paper wheels wobble.

[cbwx34]

Well, the saga continues...I ran some tests with the slow grinder and was really have a problem with balancing out the paper wheels.  I took some suggestions and got a full speed grinder, well actually a variable speed, anyhow, it works much better.  First, I'm able to adjust the wheel mounting to get a much less wobbly wheel.  Secondly, at full speed, the wheels seem to smooth out a lot.  With the variable speed, I'll be able to slow it down a bit and find a happy medium between smoothness and heat reduction.  In addition, I was able to get this Delta model grinder at a greatly reduced price at Lowes.  I did have to readjust everything, but I think this will be a better setup in the end.

That's how I figured it out... on a variable speed grinder.  After a while, I just ran it on "high".  Heat is controlled by technique.

Congrats!