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Old 28-07-2021, 10:59 AM   #1
Breezy
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Best electric DA for Wet Sanding?

So in previous years the trusty Porter Cable 7424 has been used for wet sanding with the mirka abralon pads and whilst the throw isnt 100% perfect it doest a pretty good job at web sanding.

I've started looking at the Rupes LHR12E but It doesnt look like you can use a 3" backing plate with it so you would also need to invest in a Rupes LHR75E too which will end up being quite pricey and I would rather one tool that does both!

has anyone found a good alternative or ideal solution?
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Old 28-07-2021, 11:14 AM   #2
GeeWhizRS
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I make a 3" backing plate for the Rupes LHR12E if you are interested.
Info here https://polisherbackingplates.co.uk
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Old 28-07-2021, 11:33 AM   #3
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If you are refinishing clear or colour (noy primer in a bodyshop), you want the smallest throw you can, and ideally not a giant counter weight. I avoid normal detailing random orbital machines now at all costs
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Old 28-07-2021, 04:55 PM   #4
Andy from Sandy
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I would think for the job you want windy tools when playing with water.
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Old 28-07-2021, 06:23 PM   #5
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Quote:
Originally Posted by stangalang View Post
If you are refinishing clear or colour (noy primer in a bodyshop), you want the smallest throw you can, and ideally not a giant counter weight. I avoid normal detailing random orbital machines now at all costs
Would you mind explaining why? I don't know and it feels like useful knowledge to have.
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Old 28-07-2021, 08:44 PM   #6
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Quote:
Originally Posted by SuperchargedLlama View Post
Would you mind explaining why? I don't know and it feels like useful knowledge to have.
You don't want or require tons of rotational force. If you watch an air fed ro machine, they oscillate a lot with very little spin. A counter weight shunts the backing plate at a much higher rate than needed as you aren't trying to move round a think pad and grind in a liquid.

Most European high end bodyshops use electric machines with extraction and have like a 3mm, 5mm and 7mm machine depending on the surface they are sanding (filler repair, primer, colour/clear)

I haven't looked back since investing in a dedicated machine for refinishing paint. Will include a video I hope it helps as a visual

https://youtu.be/-Q_Az00VkhU
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Old 28-07-2021, 09:05 PM   #7
macmaw
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Three very good electric machines to consider, which will cover all sizes required.
Rupes LHR12E Duetto for 5”
Rupes LHR75E for 3”
Rupes Bigfoot Nano Ibrid for 1”
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Old 28-07-2021, 09:06 PM   #8
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Quote:
Originally Posted by Andy from Sandy View Post
I would think for the job you want windy tools when playing with water.
Not at all, there isn’t a lot of water needed or used for wet sanding
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Old 29-07-2021, 04:58 PM   #9
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Well I have considered air tools but not sure if a 50L compressor will be enough to power something like a mirka air sander? Not that I'll be running a body shop just for small wet sanding or panels here and there

So the Rupes LHR12E Duetto seems like a good choice especially if there is a "3 backing plate for it
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Old 03-08-2021, 09:29 AM   #10
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Just to throw something else even more expensive into the mix what about the festool rotex sanders like the RO 150 and 90?

they look amazing for polishing wood but would they be suitable for wetsanding too?

if i can get one that goes from 60 grit to 6000 this would be ideal, the right way round of course!
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