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3 restos WIP = psycho
 
kenikh's Avatar
 
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Air sander for body work?

I have a bumper that needs refinishing - planning on smoothing the chips with 150 grit, but don't have an air sander. My compressor is a beast, so I can run anything.

Any suggestions? Size/spec?
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Old 03-17-2009, 02:48 PM
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Use your hand, it's good for your soul

I'm just jealous cause my compressor is to small to run air tools efficiently.
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Old 03-17-2009, 03:14 PM
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3 restos WIP = psycho
 
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Quote:
Originally Posted by Classic View Post
Use your hand, it's good for your soul

I'm just jealous cause my compressor is to small to run air tools efficiently.
You laugh - I hand polished (several different cuts) when painting my Triumph's motorcycle frame. I've earned my stripes.
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Old 03-17-2009, 03:19 PM
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Kenik-

I would think any 6" DA sander would work fine. I have a Craftsman but even a cheapo Harbor Freight unit will work fine. I know one body guy who thinks of the HF tools as disposable... Shy away from a small palm sander to avoid fatigue.

I would suggest hitting the bumper with 80 grit to knock down the chips fast, followed by 220 then your filler/primer/paint of choice.
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Old 03-17-2009, 03:32 PM
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Remind me what DA stands for...
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Old 03-17-2009, 03:38 PM
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Dual Action
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Old 03-17-2009, 03:40 PM
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So if I am cheap and don't plan on doing this professionally, this will be OK?

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Old 03-17-2009, 03:55 PM
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not that one !!!!! the orbit it to big ! get a teardrop handle sander . go to autobody toolmart . com look for CP 6 inch da sander part # 3470-y with a 3/16 ordit . unless your working with wood forget about 150 da paper . use 180 or 220 paper . you should not prime over a cut more than 180 grit . if you use a 150 grit you will get da orbit marks showing throw down the road .
Old 03-17-2009, 05:22 PM
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Quote:
Originally Posted by 962porsche View Post
not that one !!!!! the orbit it to big ! get a teardrop handle sander . go to autobody toolmart . com look for CP 6 inch da sander part # 3470-y with a 3/16 ordit . unless your working with wood forget about 150 da paper . use 180 or 220 paper . you should not prime over a cut more than 180 grit . if you use a 150 grit you will get da orbit marks showing throw down the road .
Great info! That's a pretty big jump in price, though...only nominally cheaper on EBarf.
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Old 03-17-2009, 05:29 PM
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kenik the sander you posted is good for hog work . you can set it on grind and strip paint and it works good with 36 or 80 grit paper to rip down plastic body filler . the down side to that sander is it makes your forarms numb real fast and there hard to handle when you have to roll it over the edges of a panel . the sander i'm talking about is very ez to use and has more things you can use it on . yes it cost more ! but there are cheapper one like that too . one of the ones i have like that i paid 59 bucks for new that i use as a better .
Old 03-18-2009, 07:51 PM
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$60 is easier to stomach than $140, but not still isn't far from the $20 of the HF unit. Any pointers on the cheaper one you like? If not, I will bite the bullet and get the CP unit. I am a big believer in the value of the right tool for the right job, so I'll buy what I need if there is no reasonable alternative.
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Old 03-18-2009, 08:05 PM
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kenik i will check the fliers then i get to the shop on friday and let you know .
Old 03-19-2009, 07:12 PM
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Thanks!
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Old 03-19-2009, 08:12 PM
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Hand sand, don't use power tools. You'll cause more damage than good. If you're trying to save money, look at the cost of DA paper. It comes in boxes of 50 sheets and your going to need multiple grits. You should also be using a flexible pad on the DA and they cost $$ too.
Old 03-19-2009, 09:19 PM
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no you do not want to use an inter face pad for that lind of repair . you can use a DA for the first coats of plastic work then on the last coat when your into putty do it by hand .
Old 03-20-2009, 04:48 AM
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Kenik,

I bought a Hutchins DA but did not use it much. Really, you can do all of that by hand and you get a better feel for what it going on. Also, seemed like every time I used the DA, I would get pig tails in the filler or primer.

Get a long board sander and a cheese grader for the heavy work and then do the rest by hand
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Old 03-20-2009, 07:49 AM
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Hand sand it is.
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Old 03-20-2009, 08:38 AM
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kenik this was the sander i was talking about . made by ATD part # 2088 6 inch random orbital palm sander for 52.35 . people get as stated pig tails ( swirl marks ) from lack of knowledge of the body repair business . the orbit was to big and the grit was all wrong if your get swirl marks in you plastic work ! and like i stated before about using the wrong grit paper like 150 grit and then trying to prime over it . also not laying the da flat on the substraght will give you swirl marks ! and not changing the paper when its past its working life will also do so . you can buy da paper by the sheet there is no need to buy a hole box or roll of paper . using a flexable pad ! what ? why ? use the right tool for the job . NO Really you can do all that by hand but ? insted of taking all day to do a 2 hour job. buy the right tool and use it as it should be used ! unlike the people telling you to do it by hand becouse they just don't know how to do it the right way. you will find that the da sander is the most highly used tool in the body shops and why it is !!! a cheese grader o my god !!! how bad is the substraght to need some thing like that ? 30 plus years in the repair business and i have not needed a tool like that in my tool box . i like to use a hammer and dollie first . in no way could i give my customers keys back knowing i used that much cheese on there car .
Old 03-20-2009, 07:16 PM
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Quote:
Originally Posted by 962porsche View Post
kenik this was the sander i was talking about . made by ATD part # 2088 6 inch random orbital palm sander for 52.35 . people get as stated pig tails ( swirl marks ) from lack of knowledge of the body repair business . the orbit was to big and the grit was all wrong if your get swirl marks in you plastic work ! and like i stated before about using the wrong grit paper like 150 grit and then trying to prime over it . also not laying the da flat on the substraght will give you swirl marks ! and not changing the paper when its past its working life will also do so . you can buy da paper by the sheet there is no need to buy a hole box or roll of paper . using a flexable pad ! what ? why ? use the right tool for the job . NO Really you can do all that by hand but ? insted of taking all day to do a 2 hour job. buy the right tool and use it as it should be used ! unlike the people telling you to do it by hand becouse they just don't know how to do it the right way. you will find that the da sander is the most highly used tool in the body shops and why it is !!! a cheese grader o my god !!! how bad is the substraght to need some thing like that ? 30 plus years in the repair business and i have not needed a tool like that in my tool box . i like to use a hammer and dollie first . in no way could i give my customers keys back knowing i used that much cheese on there car .
You're right, that one is totally in my wheelhouse:

http://www.tooltopia.com/index.asp?PageAction=VIEWPROD&ProdID=40426
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Old 03-20-2009, 09:14 PM
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OK, I really don't want to be offended by 962's post. By the sounds of it, he has more experience than any of us and that is who you should be listening to. However, my recent paint job was my first. I had a mentor teaching me the basics and I think learning to do it by hand gives you a better understanding of what your power tools are doing for you. My next one will definately make more use of my air tools!!! The Karate kid was not given an air paint sprayer to "paint da fence" or a high speed buffer to "wax da truck"

Anyway, I know your car Kenik and there are certain areas where I know you will need filler It is just out of your control and due to previous body work. A hammer and dolly will not help you there. That is where I was referring the need for a cheese grader. You may or may not need it but when doing large panel replacement I found it helpful. I am not a pro at laying down filler... I know I sanded 95% of it back off the car but a grader made that really easy.

If you were doing a repaint of your brown car, I don't think you would ever need a grader. That is an entirely different beast as the body is already pretty straight and you could easily dolly any little dings out.

I just want to make sure we are comparing apples to apples. Bottom line is...soak up as much info as you can from as many people as you can. There are many different ways to skin a cat!

If you want to borrow my long board Hutchins, let me know.

Going to Bernie's tomorrow?
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Old 03-21-2009, 10:27 AM
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