I've been thinking of building something that would hold my random orbital
sander on it's side with a table in front of it so I could sand the edge of
finished pieces. Essentially, I'd like to make a disc sander out of my
sander. Am I out to lunch with this idea?
I don't think the random orbit sander is suitable. Aside from the
orbital motion, the average random orbit sander uses a universal motor
drawing about 2 amps, while even an el cheapo $99 Delta Shopmaster
belt/disc combo uses an induction motor supposedly developing 1/3 hp.
Roughly guesstimating, I think that's about twice as powerful. Plus,
it's an induction motor.
Go up a few bucks and you're quickly into 1/2, 3/4, and 1 hp territory.
Now I have seen people set up drills in a clamp as a disc sander, and
that makes more sense to me. If I had to do it, I'd go with at least a
6 amp drill. You can get a reconditioned DeWalt for $50 or Hitachi for
$40 at Amazon.
Still, I'd get a benchtop disc sander. Who wants to listen to their
nice drill eating it all day long?
The ROS is designed for light work. A real disc or belt sander can do
wonders. It is one of my tools used on every project. Ever cut something
curved on the bandsaw and get off the line a tad? The belt sander fixes
that in seconds. You won't regret getting a good sander with sufficient
power and size.
Got an old motor around??? make a disk sander and save your ROS for finish
I saw a very accurate sander made with a washing machine motor with a 12"
particle board circle from the borg... disc mounted direct on shaft, simple
plywood and 2x4 table in front of it...
Lots of free plans on the web that you could build one with, all less expensive
than replacing your ROS when you abuse it trying to hog off material like a disk
sander will... YMMV
I have an old bench top disc sander that I've been looking to get rid
of, where are you located? All you need is a motor for it.
If too far away from PA there are some really nice plans as mentioned
above for making one out of an old motor and mdf disc...
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