This is going to sound like a stupid question..............but I have to ask it!

[Alan Longmire]

1 hour ago, Chris Christenberry said:

at the factory.

 

Ah, see, I don't use the PSA disks.  I slap a sheet of Rinowet on there and cut it to fit.  Far cheaper.  FAR cheaper. 

[Chris Christenberry]

Ha-ha, made me go look it up!  Never heard of Rinowet before.  9x11 sheets won't cover my 12" disk sander's platen.

Edited October 6, 2021 by Chris Christenberry

[Alan Longmire]

D'oh!  That's why I have a 9" disk grinder.  Looked at a 30" vertical disk grinder at an auction once, and realized I could never afford the paper...  it came from an aluminum foundry and was used to trim castings.

[Chris Christenberry]

Have to admit I've been tempted to make a trade with someone.  The 12 inch is a "must have" in a furniture builder's shop.  Knife makers, not so much.

[Joshua States]

3 hours ago, Chris Christenberry said:

Thanks for that.  Maybe that's been my problem, Alan.  I've always just relied on the adhesive applied to the back of the paper at the factory.  Was always hesitant to use additional adhesive for fear it would stick FAR too well.

I don't use the self-stick discs. I just use regular 9x11 inch sheets. I use the spray adhesive by 3M and lightly spray it on the disc after giving it a spin with my hand. I concentrate the spray around the edge of the disc. Cut off the excess with a ........knife I made for this specific purpose! The beauty of it is if you are carefull when you place the paper, you get these.

 

 

Those allow you to cut a 1" wide strip 9" long off of each end. The result is a bunch of strips perfect for hand sanding and a bunch of little corners that are perfect for detail hand sanding on handles.

 

 

Hey, I'm cheap. I was raised on "waste not, want not."

 

As for cleaning the glue off the disc when it gets troublesome, I find that 3M adhesive remover works better than anything else, and Goof-Off adhesive remover gel works almost as well. (and is slightly less expensive too!)

 

 

 

Edited October 6, 2021 by Joshua States

[Joshua States]

1 hour ago, Chris Christenberry said:

Have to admit I've been tempted to make a trade with someone.  The 12 inch is a "must have" in a furniture builder's shop.  Knife makers, not so much.

Cant you just get a 9" disc and swap it out? I have a spare one I'd part with. The face is clean. 

 

 

This is a heavy disc, 13/32" thick.

 

 

With a 5/8" spindle hole and a keyway

 

 

Edited October 6, 2021 by Joshua States

[Chris Christenberry]

I'm considering that, Josh.  I don't know if there would be any disadvantage to modifying this 12" Delta disc sand to a 9" or not.  Not sure what the spindle size is on my sander, but I'll check. 

[Randy Griffin]

If it's an older delta 1/2 hp, it probably has a 3/4" shaft. That's an odd size.

[Garry Keown]

On 10/7/2021 at 8:48 AM, Chris Christenberry said:

Have to admit I've been tempted to make a trade with someone.  The 12 inch is a "must have" in a furniture builder's shop.  Knife makers, not so much.

I have a 12 inch disc to flatten scales off the bandsaw before final flatening on the granite slab (with paper on it of course. I buy the 80 grit emery discs from thefarm shop that is for the shearers disc grinder to sharpen thier shearing gear. The discs are 5 inches but priced well and they last for months. Spray contact is easy to remove from the allow disc to attach another emery. Wouldnt be without it.

A retiring knife maker offered me his double ended disc grinder with 9 inch beveled discs on each end so the wheel turned the same way for each disc against the blade . He had three of them and I was just getting into the commercial side of the craft and didn't see the benefit of them.

[Chris Christenberry]

10 hours ago, Randy Griffin said:

If it's an older delta 1/2 hp, it probably has a 3/4" shaft. That's an odd size.

Actually, Randy, it is an older Delta Mod# 31-120.  Finally located  an "old-timer" from the Delta company who told me it was definitely a 3/4" shaft.  I so doubted him that I had to take the time to tear mine down and sure enough............. I was right!!!!!!!!!!!  It's a 5/8" shaft.   Oh well, the way my sander is built made it impossible for me to be able to reach the Allen Screws on Josh's disc so I can't use it.  Bummer!!!!!  Would loved to have that heavier disc.

[Randy Griffin]

Yours is a newer model than mine. I looked at the breakdown and yours is made different. Do you think you could modify Josh's disc to mount on yours? Looks like the shaft is threaded to take a screw from the front of the disc.

[Alan Longmire]

Or maybe you could cut a window out of the frame/shroud to be able to reach the set screws?  It would not be good for the dust collection abilities, but it might work...

 

Or even take a spare 12" disk if you can find one and turn it down to 9"...

[Chris Christenberry]

I looked into cutting the cast iron shroud to gain access, but not only would it be a horrible mess, I'm still not sure it would give me the access I need.  I'd need a mighty long Allen Key to do the work.  Naw, I'll stick with my 12" sander.  Never used it for metal working before, don't need one now.  I've got this beautiful 2x72 that will do anything I need for now.  But thanks for the suggestion.