Need Advise - Scroll Saw Woodworking & Crafts Message Board

Northstar · 04-02-2009, 09:57 PM

Hello Everyone,

I have a bench grinder that I very seldom use, so I've been thinking of converting it to a drum sander. Here are some specs about it.
It is a 3/4 H.P. with 1/2" shafts. It runs at 3450 rpm's. My questions are, Is that too fast for a sanding drum? Also, the shafts are threaded. Is it possible to buy drums to fit a threaded shaft? I looked in a Rockler catalog and as far as I can see, the drums they sell aren't threaded. They seem to be held in place with a pin. I don't want to spend money on a set of drums if they won't work on this motor.

Any help you can give is greatly appreciated.

Thanks in advance.

El

wood-n-things · 04-02-2009, 11:22 PM

I know someone will know but you can call rockler. They are always willing to give advice.

Call Us - Can't wait? Give us a call, and our trained support staff will be happy to help you. Call 1-800-279-4441. (Note orders can be made 24 hours a day, however, technical support and other assistance is only available during normal business hours - central time).

scrollpup · 04-03-2009, 06:40 AM

Mike your wealth of knowledge astounds me!

Jerry C

Rolf · 04-03-2009, 01:01 PM

That seems fast for me. Yes they do make drums that mount on shafts but the shafts need to be longer than what is typical on a grinder. At 3450 the drums have to be very balanced or they will vibrate like crazy.

wood-n-things · 04-03-2009, 06:02 PM

Tons of information. Gotta be able to make an informed decision now...right?

Northstar · 04-03-2009, 09:14 PM

Thanks for the advise, guys. But I think I will abandon the idea of converting the grinder. I just thought that as long as I seldom use it for what it was intended for.......

I have a set of drum sanders for my drill press and I made a couple of sanding mops. I'll just stay with those.

Again, thanks.

El

HAMMER · 04-04-2009, 06:51 PM

Fnd an electrical supply house in your area and ask them for a regulator. Yu will e able to control the speed with a dial that way you can slow it down If you need to. As for the drums someone else needs to chime in on that part.

04-02-2009, 09:57 PM	#1
Northstar Member Join Date: Dec 2005 Location: Park Falls, WI Posts: 52	Need Advise Hello Everyone, I have a bench grinder that I very seldom use, so I've been thinking of converting it to a drum sander. Here are some specs about it. It is a 3/4 H.P. with 1/2" shafts. It runs at 3450 rpm's. My questions are, Is that too fast for a sanding drum? Also, the shafts are threaded. Is it possible to buy drums to fit a threaded shaft? I looked in a Rockler catalog and as far as I can see, the drums they sell aren't threaded. They seem to be held in place with a pin. I don't want to spend money on a set of drums if they won't work on this motor. Any help you can give is greatly appreciated. Thanks in advance. El

04-02-2009, 11:22 PM	#2
wood-n-things Behave Yourself..I can't. Join Date: Nov 2005 Location: Right here ---silly Posts: 4,471 Blog Entries: 1	I know someone will know but you can call rockler. They are always willing to give advice. Call Us - Can't wait? Give us a call, and our trained support staff will be happy to help you. Call 1-800-279-4441. (Note orders can be made 24 hours a day, however, technical support and other assistance is only available during normal business hours - central time). __________________ The Mike One of them anyway. Don't be so open-minded. Your brains will fall out!

04-03-2009, 01:01 PM	#4
Rolf Senior Member Join Date: Apr 2005 Location: Bellport, LI New York Posts: 2,808	That seems fast for me. Yes they do make drums that mount on shafts but the shafts need to be longer than what is typical on a grinder. At 3450 the drums have to be very balanced or they will vibrate like crazy. __________________ Rolf RBI G4 Hawk, Delta SS350 Philosophy "I don't know that I can't, therefore I can"

04-03-2009, 06:02 PM	#5
wood-n-things Behave Yourself..I can't. Join Date: Nov 2005 Location: Right here ---silly Posts: 4,471 Blog Entries: 1	Tons of information. Gotta be able to make an informed decision now...right? __________________ The Mike One of them anyway. Don't be so open-minded. Your brains will fall out! Last edited by wood-n-things; 04-04-2009 at 01:37 AM. Reason: clarification...hehehe

04-04-2009, 06:51 PM	#7
HAMMER Senior Member Join Date: Apr 2008 Location: KATY, TX. (WEST HOUSTON) Posts: 374	Fnd an electrical supply house in your area and ask them for a regulator. Yu will e able to control the speed with a dial that way you can slow it down If you need to. As for the drums someone else needs to chime in on that part. Last edited by HAMMER; 04-04-2009 at 06:51 PM. Reason: typo

04-03-2009, 06:40 AM	#3
scrollpup Avatar by Casey Join Date: Jan 2009 Location: Hot Springs,Arkansas Posts: 1,732	Mike your wealth of knowledge astounds me! Jerry C

04-03-2009, 09:14 PM	#6
Northstar Member Join Date: Dec 2005 Location: Park Falls, WI Posts: 52	Thanks for the advise, guys. But I think I will abandon the idea of converting the grinder. I just thought that as long as I seldom use it for what it was intended for....... I have a set of drum sanders for my drill press and I made a couple of sanding mops. I'll just stay with those. Again, thanks. El

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