I don't use my dewalt sander that much but it's handy and useful. Using
it the other day and I held it off the workpiece for several seconds
while I was looking for dips, etc. The sander started spinning very fast
and I shut if off before starting to sand again.
I don't remember this ever happening so I guess something's either
broken or maybe it's dirty and instead of spinning randomly and orbital
it's only doing random or orbital. This make sense? Anyone seen this?
What's the cure? It's spinning so fast that if I were to continue
sanding without first shutting it off I'd be destroying the work
unless I was able to lay it perfectly flat on the surface.
When it's on the work it seems fine but without any resistance it
starts spinning very fast.
I have the exact same sander, same problem (broken belt).
The PC part costs several dollars, I just went to the local hardware
store and bought a generic black 'o' ring, costs $0.50 and has been
working perfectly for several years now.
Will take it apart and see what I need to buy. All the rubber on this
dewalt has crumbled so I guess I'm not surprised. Well at least all
the seals for the dust trap. The rubber on the switch cover's fine.
Even the power cord is crumbling.
Took the dewalt apart and no bands inside. I discovered that the problem
was due to build up of very fine dust in two places on the cast fan.
That gave the fan just the right balance to allow the pad to spin
at incredible rates. Like the perfect storm. A design flaw but not
one that would be easy to test or model but I wonder if they've
since fixed this.
With the pad removed the shaft would only spin so fast but with the
fan and pad attached it really got moving.
More than likely it would always spin fast if you simply let it spin
freely, especially if it is an older model similar to my old PC. FWIW
with the pad removed from my old PC the shaft would hardly spin at all
I remember when the brake feature was a selling feature on the newer
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