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Old 12-16-2007, 08:37 AM
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inline sander speed

I now have a new compressor, and when i run my inline sander it seems like i have way to much speed. I run at about 140psi, should i turn that down. Im using 40 grit at this time. Just dont want to ruin my sander. Im new to all the air tools, as my old compressor could not handle them.
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Old 12-16-2007, 09:42 AM
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Most air tools are recommended to be run at 90PSI..regulate it to 90 and see how that runs,running too much air PSI in a air tool could result in damage
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Old 12-16-2007, 10:24 AM
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re: inline sander speed

Thanks, thats what i wanted to know. I have done all my body work by hand, so will be nice to do some of it with power. Thanks again.
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Old 12-16-2007, 10:30 AM
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I'm sure this is not new idea,but I always have a wire brush handy to slightly "scrub lightly" the sandpaper if it gets plugged up,paper goes a lot farther.
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Old 12-16-2007, 11:03 AM
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I would not worry about wrecking your sander, put a regulator on it if it goes too fast.

I used to do alot of work with an inline sander. The Atco dual piston inline sanders we had were able to work at our shops full line pressure (which was about 135 psi ,not flowing) and I found that I could get even more speed by using a short 3/8 hose. I could never get those sanders to go fast enough...I wanted to hear them buzz like a bee, baby.

(keep in mind I'd be using them on 4' square panels, a few times I was working the waves out of panels that were as large as 8x6'..what I really wanted then was a floor belt sander with 14 grit )

I have a CP sander and have run it all day, for sometimes days at a time, at 135 psi closed line pressure, with no problems.

I don't know what the pressure drops to when you pull the trigger, IIRC with a compressor that can keep up, it is about 70PSI, with 1/4" disconnects and a 3/8" hose.


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Old 12-17-2007, 11:26 AM
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re: inline sander speed

Ok i set my psi to 90, and my inline sander worked much better. I tried to even go a bit slower, and it still worked good. Thanks for all the help. This sure beats doing it all by hand. I still need to learn to use my DA sanders. I get to many waves when i use them, so i dont know what im doing. All new learning for me.
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Old 12-19-2007, 09:32 AM
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DA's really aren't made for working body work. They're great for buzzing down getting ready for a new paint job or feathering primer. I've grown up with them, and still can't do body work with them. My dad can do a little bit of putty work, but for a nice paint job he won't touch them.
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