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  #16 (permalink)  
Old 07-31-2008, 06:23 AM
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Quote:
Originally Posted by Slickriffs
Thanks OldFool..to bad ..you can only get the crisp lines with long sanding boards..17 inches..I'll either do it by hand ..or try one with my small compressor..using it a few seconds at a time..just to ruff things in..for $29 at HF not a bad gamble..

Thanks,

Keith
Cannot disspute the long board for flatnesss, but the OP asked what is the best D.A. and the PC is.

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  #17 (permalink)  
Old 01-07-2015, 10:47 AM
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Quote:
Originally Posted by jcclark View Post
I use a Porter Cable right angle sander that has accessories for buffing
and it works great. But an electric sander shouldn't be used for
wet sanding, that's when a air sander is irreplaceable.
I use both, and for electric I think the Porter Cable holds up best.
I agree. I've had 2 PC 5" DA sanders for years (palm and right angle) and have no issues with either of them.
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  #18 (permalink)  
Old 01-07-2015, 01:28 PM
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Quote:
Originally Posted by Slickriffs View Post
Are Dual Action....and Random Orbital exactly the same motion?
Thanks,Keith
No, they are totally opposite.
Dual action spins real fast and not many orbits.
Random Orbitals orbits real fast and spins real slow.
That's why RO sanders are a lot less aggressive than a DA,
they leave much smaller circles.
the palm RO's are even less aggressive. (10,000 to 12000 opm's)
DA's are rated by RPM.
The right angle RO's are more aggressive than the palm sanders
and are the ones used for sanding and polishing on cars. (2000 to 6000 opm's)
The RO sanders are rated by orbits per minute,
you can read it on the label to compare.
They spin so slow you can watch the RPM's
I find the right angle RO's work good for color sanding clear coat.

Last edited by jcclark; 01-07-2015 at 01:48 PM.
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Old 01-07-2015, 02:00 PM
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electric da sander

I just got a new DeWalt w/6inch pad electric variable speed model 443 . I went on advice of someone who had one and was very satisfied. I paid 158.00 at c.p.o. outlet. It came with one sand disc 120 grit . I couldn't wait .I tried it on my truck fender and I was very impressed.
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Old 01-08-2015, 12:48 AM
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I would be weary about final prepping with it before paint but that's cause I'm not sure of the throw and don't know personally but I did use one before and it wasn't that bad. Just the other day I stripped part of my bike with an orbital buffer and it turned out great. I will say though, when I first tried the electric DA I didn't like it cause an air palm sander fits perfectly in your hand and you easily control the RPM.
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Old 01-08-2015, 12:54 AM
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Quote:
Originally Posted by olemanoletruck View Post
I just got a new DeWalt w/6inch pad electric variable speed model 443 . I went on advice of someone who had one and was very satisfied. I paid 158.00 at c.p.o. outlet. It came with one sand disc 120 grit . I couldn't wait .I tried it on my truck fender and I was very impressed.
variable speed? NICE! I'll keep an eye out for that one. Just found this one too. It's actually shaped like a palm sander!

http://www.homedepot.com/p/Milwaukee...-100609940-_-N
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  #22 (permalink)  
Old 01-08-2015, 05:32 AM
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Old thread - but still relevant to dig out of the archives occasionally

I have a couple mostly for woodworking - the Riyobi works well, the Ridgid that was a freebie with the trim router works, but the other one is way better. I also have a Black and Decker that was given to me - it, after one use never comes out of the cupboard. If I'm doing some bodywork, I have an inexpensive air version that works very well.

Air powered is the best way to go on automotive/metal work. Most electrics are, I believe, marketed mainly for woodworking and have a limited variety of 5" PSA or hook and loop papers. I've found they tend to gouge on anything but wood. But with that said, that might just be me and how I've used them

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Old 01-08-2015, 07:55 AM
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one mans opinion...

For stripping paint and other removal jobs I prefer electric because the torque is more constant and added weight of the electric motor can be useful on large flat panels.

For wet sanding primer and clear I prefer an air tool because of the better control. They are lighter and the speed of the disc can increase as you lessen pressure which helps remove swirl marks.
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  #24 (permalink)  
Old 01-08-2015, 01:49 PM
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The electrics come in 5" and 6",
just like the air ones.

Most have pads that are interchangeable
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Old 01-08-2015, 04:48 PM
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Ive been very satisfied with my porter cable, 5" variable speed, random, orbital sander. Picked one up at a local swap meet for about $30 and have used the crap out of it for the last 3 years 3 years.

I love the variable speed with an speed adjustent wheel on top
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  #26 (permalink)  
Old 01-08-2015, 05:21 PM
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i have air and electric da's, my electric is a cheap ryobi and i prefer it over the air for the built in dust collection on it
i'm really into dust collection lately
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