Re: Sand blasting body parts ??
[Re: Stanton]
#738559
07/02/10 01:31 PM
07/02/10 01:31 PM
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Joined: Oct 2005
Posts: 708 Mechanic Falls, Maine
4BBodies
mopar addict
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mopar addict
Joined: Oct 2005
Posts: 708
Mechanic Falls, Maine
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I use 50 pound bags of Playsand (quartz) from Home Depot. It works great, but I have to sift it. At $2.89/bag the extra few minutes of work aren't a big deal, Black Beauty is like $8.00/bag. As far as body panels, what these other guys said is correct, and only do small areas. Use some type of rust remover for large areas, like Naval Jelly.
Last edited by 4BBodies; 07/02/10 01:32 PM.
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Re: Sand blasting body parts ??
[Re: GregCon]
#738567
07/03/10 07:48 PM
07/03/10 07:48 PM
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Joined: Oct 2005
Posts: 708 Mechanic Falls, Maine
4BBodies
mopar addict
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mopar addict
Joined: Oct 2005
Posts: 708
Mechanic Falls, Maine
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Well, as an accomplished cheapskate, I don't see a problem saving $$$ when the method used accomplishes the same thing. In this case, sand over black beauty. Which is coal dust, by the way, and is NOT much better for your lungs OR the environment. And it really pisses the neighbors off more than sand too! And HD sand has always been dry for me, going on 7 years now. As far as other comments here, if people are too lazy to do it themselves, they wouldn't understand trying to save money anyway. And I don't have the desire $$$ wise to have someone else restore my cars, doing this hobby myself is the point. Yes, sandblasting is a drag, but it doesn't take all that long with good equipment. Why go through all that aggrevation as a contractor, when you can just go buy a finished car to start with? I do it ALL myself, not just the easy/fun parts. Just my
Last edited by 4BBodies; 07/03/10 07:55 PM.
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Re: Sand blasting body parts ??
[Re: 4BBodies]
#738568
07/03/10 08:37 PM
07/03/10 08:37 PM
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Joined: Jun 2009
Posts: 659 Boise Idaho
Boise Chall
OP
mopar
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OP
mopar
Joined: Jun 2009
Posts: 659
Boise Idaho
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Quote:
Well, as an accomplished cheapskate, I don't see a problem saving $$$ when the method used accomplishes the same thing. In this case, sand over black beauty. Which is coal dust, by the way, and is NOT much better for your lungs OR the environment. And it really pisses the neighbors off more than sand too! And HD sand has always been dry for me, going on 7 years now. As far as other comments here, if people are too lazy to do it themselves, they wouldn't understand trying to save money anyway. And I don't have the desire $$$ wise to have someone else restore my cars, doing this hobby myself is the point. Yes, sandblasting is a drag, but it doesn't take all that long with good equipment. Why go through all that aggrevation as a contractor, when you can just go buy a finished car to start with? I do it ALL myself, not just the easy/fun parts. Just my
Read this article on my 72 Challenger we might have something in common http://www.moparmax.com/features/featurecar/v_5-resurrection-1.html
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Re: Sand blasting body parts ??
[Re: 4BBodies]
#738569
07/03/10 09:14 PM
07/03/10 09:14 PM
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Joined: Jan 2003
Posts: 931
dulcich
super stock
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super stock
Joined: Jan 2003
Posts: 931
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Quote:
Well, as an accomplished cheapskate, I don't see a problem saving $$$ when the method used accomplishes the same thing. In this case, sand over black beauty. Which is coal dust, by the way, and is NOT much better for your lungs OR the environment. And it really pisses the neighbors off more than sand too! And HD sand has always been dry for me, going on 7 years now. As far as other comments here, if people are too lazy to do it themselves, they wouldn't understand trying to save money anyway. And I don't have the desire $$$ wise to have someone else restore my cars, doing this hobby myself is the point. Yes, sandblasting is a drag, but it doesn't take all that long with good equipment. Why go through all that aggrevation as a contractor, when you can just go buy a finished car to start with? I do it ALL myself, not just the easy/fun parts. Just my
-dulcich
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Re: Sand blasting body parts ??
[Re: GregCon]
#738573
07/04/10 12:17 AM
07/04/10 12:17 AM
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Joined: Oct 2004
Posts: 91 florida
rxod
member
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member
Joined: Oct 2004
Posts: 91
florida
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Quote:
When a car sits in the sun, it all gets hot more or less evenly and slowly. When you balst, I can easily believe the abrupt rate of heating and the fact that it is localized plays a role - if not all of the cause. Of course, the pressure can't help either.
Trust me, it ain't the heat. If I take a flat piece of sheet metal with out any bends in it and lay it on the floor and stand back 3 feet and blast it with sand or alum ox or black beauty, it will bow up towards me and there will be no heat to the metal. If I turn it over and blast the other side it will lay flat again, but will now be slightly larger than it was originally. It's peening or stretching the surface. Plastic media won't do this because it is softer than the metal and won't change the surface profile. Don't get me wrong. I can create heat and destroy a piece of metal if I try. I would NEVER let anyone use sand on the flat part of sheet metal unless you just don't care about your results. You may not even notice the warpage until you go to block it out. Very hard, if not impossible to correct.
The biggest problem with doing your own blasting is not having enough air. I'm talking about CFMs(cubic feet per minute), not PSI. That is why we use a rotary screw compressor that puts out 200+CFM of continuous air.
A 7/16" nozzle @ 80 PSI requires about 180CFM to run continuously. That's alot of air. Even a really good piston compressor may be able to sustain 30 CFMs, not enough without constantly waiting for it to catch up. I can't tell you how many times people have brought me stuff that they have tried to blast and either given up or burned up their compressors. It takes them so long, it starts flash rusting before they can finish a piece.
I'm all for doing everything I can myself, which is why I started my business, but sometimes it is all about having the right equipment for the job at hand.
People tend to think blasting should be inexpensive and easy until they try it themselves. It is a nasty, miserable, dangerous job without the right equipment. I'm talking about full respirated blast helments, big compressors, proper hoses and nozzles, lighting, expensive media, recovery equipment,etc. Most home sand blast units use 1/8-1/4" nozzles that shoot a pattern of about 1/2" in diameter, which is fine for small parts, but will take forever to do larger areas and will barely break the surface of many coatings. Our units shoot about 2-3" diameter and flow enough media (about 600lbs/hr)to remove almost anything. Plastic media only requires 30-35psi vs. sand which takes 60-100psi to move because it is heavier.
But, if you have the patience and the time, go for it.
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Re: Sand blasting body parts ??
[Re: rxod]
#738574
07/04/10 12:27 AM
07/04/10 12:27 AM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
People tend to think blasting should be inexpensive and easy until they try it themselves. It is a nasty, miserable, dangerous job without the right equipment. I'm talking about full respirated blast helments, big compressors, proper hoses and nozzles, lighting, expensive media, recovery equipment,etc. Most home sand blast units use 1/8-1/4" nozzles that shoot a pattern of about 1/2" in diameter, which is fine for small parts, but will take forever to do larger areas and will barely break the surface of many coatings. Our units shoot about 2-3" diameter and flow enough media (about 600lbs/hr)to remove almost anything. Plastic media only requires 30-35psi vs. sand which takes 60-100psi to move because it is heavier.
But, if you have the patience and the time, go for it.
Thanks for chiming in, that was the point I was trying to make. To sustain the necessary air pressure with a shop compressor you have to use a 1/8-1/4" tip on your wand sandblaster and it takes forever and a day to get a large area done. Go try it and see for yourself. It's like sanding down an inner fender with something the size of a pencil eraser.
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