Greetings, I want to build a simple 12 inch disc sander. I have a motor, and
know what I want to build. BUT, what can I use for the disc? Speed wll be
1725 RPM utilizing a 1/2 horse motor or alternately 3450 RPM using a 1.5 horse
motor. I don't want to make something that might fly apart. Looking at some
of the cheap (grizzly, harbor freight) disc sanders, they seem to use aluminum
for the disc to which an adhesive sanding disc attaches. I don't have access
to a 12 inch aluminun disc. Would a plywood or MDF or for that matter a solid
wood disc be acceptable? Any suggestions for a backing material that would be
safe to use? Something already round and 12 inches in diameter would be ideal.
I can drill a center hole to adapt to the motor shaft. I have considered an
abrasive cut--off disc but can't fine one in a 12 inch size. Obviously, the
material needs to be ridged enough not to flex when pressure is applied to it's
face. Ideas? suggestions?
TIA Mike in Arkansas
In article <[email protected]>, JMWEBER987
<[email protected]> wrote:
> Greetings, I want to build a simple 12 inch disc sander. I have a motor, and
> know what I want to build. BUT, what can I use for the disc?
snip
Plans for one here, it has 9" disk could be modified for 12":
http://benchnotes.com/DISK%20SANDER%20/Disk_Sander.html
Frank C.
--
http://doit101.com
On 23 Apr 2004 23:24:39 GMT, [email protected] (JMWEBER987) wrote:
>Greetings, I want to build a simple 12 inch disc sander. I have a motor, and
>know what I want to build. BUT, what can I use for the disc? Speed wll be
>1725 RPM utilizing a 1/2 horse motor or alternately 3450 RPM using a 1.5 horse
>motor.
you don't want 3450 it is too fast and will wear paper and burn wood. if you can
go larger then 12" as you don't get to use much of the disc.
--
Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.
"Scarfinger" writes:
> The Shopsmith disc mounts on a 5/8" shaft.
>
http://www.shopsmith.com/ownersite/catalog/SandingPromo04/sn_sandingdisc.htm
> Check ebay for used ones.
SFWIW, That's the one I used.
--
Lew
S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: <http://home.earthlink.net/~lewhodgett> for Pictures
On Sat, 24 Apr 2004 20:37:40 GMT, Frank Campbell <[email protected]>
wrote:
>In article <[email protected]>, JMWEBER987
><[email protected]> wrote:
>
>> Greetings, I want to build a simple 12 inch disc sander. I have a motor, and
>> know what I want to build. BUT, what can I use for the disc?
>snip
>Plans for one here, it has 9" disk could be modified for 12":
>http://benchnotes.com/DISK%20SANDER%20/Disk_Sander.html
>
>Frank C.
The Shopsmith disc mounts on a 5/8" shaft.
http://www.shopsmith.com/ownersite/catalog/SandingPromo04/sn_sandingdisc.htm
Check ebay for used ones.
Paul.
"JMWEBER987" writes:
> Greetings, I want to build a simple 12 inch disc sander. I have a motor,
and
> know what I want to build. BUT, what can I use for the disc?
<snip>
Fred Bingham to the rescue.
Go to the library and get a copy of Fred's book, "Practical Yacht Joinery".
You will find sketches, drawings, the whole works, It how I built mine.
If you wonder why a boat building book for a disk sander, you haven't tried
to finish a boat, there is simply no more important tool, IMHO.
HTH
--
Lew
S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: <http://home.earthlink.net/~lewhodgett> for Pictures
"JMWEBER987" writes:
>
> Hell of a boat Lew.
Thank you. Those pictures on that site are way out of date. May get around
to updating them someday.
> What did you use for the disc on your sander?
I had a commercial 12" aluminum disk available; however, it would be NBD to
use a sink cutout trimmed to size with a router with a circle jig and a
small plywood block added on the backside to increase the bearing area for
the motor shaft.
Not only are sink cut outs low cost, they will also have a laminate on one
side to provide a smooth surface for the sandpaper.
Don't like a sink cutout, use a piece of 13 ply Birch and add laminate.
HTH
--
Lew
S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: <http://home.earthlink.net/~lewhodgett> for Pictures