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Re: media blasting body to prepare for resto
[Re: shakerjoe]
#1620748
05/16/14 07:52 PM
05/16/14 07:52 PM
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Joined: Aug 2003
Posts: 18,575
Dreaming of the 808
AZ_A12_BEE
I Live Here
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I Live Here
Joined: Aug 2003
Posts: 18,575
Dreaming of the 808
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I see no difference between glass and sand, both are silica based and will warp your panels
69.5 A12 Bee, first purchased in 1976, car 169 on registry
69 Coronet R/T 440/4 spd
69 Coronet 500 Conv H code 383 4bbl/auto
37 Plymouth PU
Find your spot on earth and ride it.
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Re: media blasting body to prepare for resto
[Re: flypaper]
#1620751
05/17/14 11:21 AM
05/17/14 11:21 AM
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Joined: Apr 2011
Posts: 315
Ontario, Canada
RealWing
enthusiast
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enthusiast
Joined: Apr 2011
Posts: 315
Ontario, Canada
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I found plastic media to be the best. I used this on my Superbird resto. Had the whole car done, including removal of all the undercoating.
For my cureent Cuda resto, i found someone who uses powdered (not crushed) glass at low pressure. Even it will warp panels if not careful.
If I do another car, it will be done using only plastic media.
1970 Superbird 440-6bbl, auto
1969 Barracuda 340-4bbl, FB Formula S auto
1969 Barracuda 6.1 L Hemi, 5 speed, Convertible
2022 Can Am Spyder RTL
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Re: media blasting body to prepare for resto
[Re: Stanton]
#1620753
05/17/14 09:54 PM
05/17/14 09:54 PM
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Joined: Jan 2003
Posts: 5,948
British Columbia
chrisf
master
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master
Joined: Jan 2003
Posts: 5,948
British Columbia
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I have posted on this before. I am a media blaster and specialize in sheet metal blasting. first off. stop listening to people who know only what they read on the internet and have no first hand experience in blasting cars. a logging truck isn't a car and doesn't use the same media. Go see your blaster and have him show you what he can do with a donor part. I do this all the time for people who believe old school myths about media and warpage. most of the time they say "wow" sand and glass are NOT the same. sand is garbage. I am a multi media blaster and will choose what is best for your car and for the most bang for the buck. we use soda, walnut 3 grits of glass (200 100 20-50) aluminum oxide, 2 types of garnet never sand. most projects other than hoods and trunk lids are now done with glass. this includes corvettes. price $800 is fair. I would be around that as well. vette 200 grit glass.  caddy (yep caddy) 100 grit  nomad 100 grit  how about a beer can?  please pm me if you have any questions on blasting . I take pride in my work and don't care if its a $10 part or the $150,000 31 caddilac I did. 
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Re: media blasting body to prepare for resto
[Re: chrisf]
#1620755
05/18/14 12:20 PM
05/18/14 12:20 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
I have posted on this before. I am a media blaster and specialize in sheet metal blasting.
first off. stop listening to people who know only what they read on the internet and have no first hand experience in blasting cars. a logging truck isn't a car and doesn't use the same media. Go see your blaster and have him show you what he can do with a donor part. I do this all the time for people who believe old school myths about media and warpage. most of the time they say "wow"
sand and glass are NOT the same. sand is garbage.
I am a multi media blaster and will choose what is best for your car and for the most bang for the buck. we use soda, walnut 3 grits of glass (200 100 20-50) aluminum oxide, 2 types of garnet never sand. most projects other than hoods and trunk lids are now done with glass. this includes corvettes.
price $800 is fair. I would be around that as well.
I learn something from your posts every time I read one.
I also have been blasting a long time, mostly trucks that any monkey can do. I have done cars also.
I agree with one of the posters above, multi able medias are required for a different parts of the car.
Reason for my post is to point out that I like using a steam pressure washer on the whole car first before any blasting takes place.
It removes ALL body seam sealer, oil, grease, road tar, rubber AND ALL undercoating. It does not remove any factory paint. It will remove aftermarket paint jobs if I want it to. I use it to remove 2nd and 3rd paint jobs from jambs so I can see the spotwelds to drill out and do not have media everywhere to work around. Plus it does not flash rust like bare metal does after blasting.
Then I can see what I really "have" before blasting.
That way it requires way less blasting to remove the factory paint coatings and not stress the metal any more than necessary by not blasting off undercoating with media.
FWIW I use coal slag on the bottom, insides and plastic media on the outside body panels.
I'm sure the glass is better than slag, but I'm wondering what the price difference is. Last time I looked it was a lot more than slag. I bet slag is like sand to you? I'm going to try some glass here soon on my next delicate job, thanks.
I would never use slag on the outside body panels.
I used the pressure washer on this car before blasting, removed all the seam sealer inside and the aftermarket black paint job in the jams so I could see the spot welds to drill them out. No bare metal to rust while I do rust repair like if I were to media blast first and no media to clean up or work around.
Found a factory spotweld tip attached to my car.
Last edited by Challenger 1; 05/18/14 12:42 PM.
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Re: media blasting body to prepare for resto
[Re: chrisf]
#1620756
05/18/14 01:18 PM
05/18/14 01:18 PM
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Joined: Oct 2005
Posts: 8,880
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,880
Ontario, Canada
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Quote:
I have posted on this before. I am a media blaster and specialize in sheet metal blasting.
first off. stop listening to people who know only what they read on the internet and have no first hand experience in blasting cars. a logging truck isn't a car and doesn't use the same media. Go see your blaster and have him show you what he can do with a donor part. I do this all the time for people who believe old school myths about media and warpage. most of the time they say "wow"
sand and glass are NOT the same. sand is garbage.
I am a multi media blaster and will choose what is best for your car and for the most bang for the buck. we use soda, walnut 3 grits of glass (200 100 20-50) aluminum oxide, 2 types of garnet never sand. most projects other than hoods and trunk lids are now done with glass. this includes corvettes.
price $800 is fair. I would be around that as well.
I've said before that I wish I lived closer to you. Blasters around here don't come close to your price. And from what little experience and knowledge I have I honestly don't know how you can do it that cheap when you have to switch medias, etc..
Out of curiosity, where would you use the walnut ???
Maybe, if you don't mind, give us an idea of where each of those medias listed would be used.
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Re: media blasting body to prepare for resto
[Re: Stanton]
#1620757
05/18/14 02:14 PM
05/18/14 02:14 PM
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Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Silver70
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
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I've been using fine sand for over 20 years to blast cars and I've never had a panel warp. The worst part is the clean up. I see no reason to switch to anything else more expensive when it works perfectly fine. It's like using a grinder or anything else, you stay on one spot too long, it's going to heat up and warp... it's really not rocket science 
68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram
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Re: media blasting body to prepare for resto
[Re: chrisf]
#1620758
05/18/14 03:01 PM
05/18/14 03:01 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
oops no mopars.
hemicuda
Looks good, but I would never blast it with hinges in place. Even if the owner left them in place, I would insist on him removing them. So he can't blame me for his messed up hinges down the road if he don't take them off and rebuild them after blasting. Then you got nasty dirty metal under them when you do take them off for rebuilding.
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Re: media blasting body to prepare for resto
[Re: shakerjoe]
#1620761
05/18/14 11:40 PM
05/18/14 11:40 PM
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Joined: Jan 2003
Posts: 18,632
jersey shore
flypaper
I hate Texas
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I hate Texas
Joined: Jan 2003
Posts: 18,632
jersey shore
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ok... you have a RARE car that means ALOT,or i would not of bothered to preach any of this dribble if not for your last post. i've learned alot about blasting from seeing other peoples work first hand and also seeing other peoples very bad mistakes.  it is alot easier then some here think to screw something up. i think you should at least know some basic fact to know about blasting that nobody here even mentions to you before jumping in... one thing i do know is when you blast metal is you are changing the surface definition of the metal and also you are taking away the finer details and wrinkles. the amount of that change will depend alot on media selection and blast method. when you blast something, you are streching/fatiguing the surface of the metal, even if you can't see it when your done! no matter what media you choose to use... you might not warp the panel,but you have changed the surface,streched/fatigued/ effected the metal in some way! it is one of the main reasons why i choose not to blast much on the outside flat panels.only in areas where its needed. i do not want to lose any of the finer details or definition in the area where everyone's eyes are upon it. also that isn't a area where most of the rust is anyway, so why strech out/fatigue the metal in a area when you don't need to?????? just because it takes the paint off easy is the wrong reason........... imo i feel that you should really only blast where you really have to, the inside and underside and leave the outside for the chemicals. consider my method  ,it is fool proof and you take no risk of irreversable damage happening. you have a RARE car, why take the chance?  this is just my anal andyness opinion coming out and how i see it  and some food for thought for you. i really don't care what you do, but you can't say there isn't a method to my madness 
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Re: media blasting body to prepare for resto
[Re: chrisf]
#1620763
05/19/14 01:11 AM
05/19/14 01:11 AM
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Joined: Jan 2003
Posts: 18,632
jersey shore
flypaper
I hate Texas
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I hate Texas
Joined: Jan 2003
Posts: 18,632
jersey shore
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Quote:
Flypaper. You may want to stop using sandpaper if your that concerned about surface damage. Your overthinking the process. Go look at my beer can pic. Zoom in on it and then go cut open a beer can and measure it. Everybody has their own way of doing things but I think your doing more work than necessary.
maybe overthinking or maybe too much work,but
i learned alot in the past from one of the very best in the restoration game ...
what can i say,it rubs off... 
i full well know what blasting does/can do to metal...
you can't deny
the surface of that can has been changed from what it was.
it was very very smooth,now the surface is roughed up.
you might not be able to measure any change in thickness when you cut it open, but
i'd be willing to bet if it was pressure tested against another can, the blasted can would be weaker and would burst first
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Re: media blasting body to prepare for resto
[Re: chrisf]
#1620767
05/19/14 02:47 PM
05/19/14 02:47 PM
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Joined: Oct 2005
Posts: 8,880
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,880
Ontario, Canada
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Quote:
Stanton. The beer can is smooth no damage. Shake all you want. Soda isn't abrasive it doesn't cut. the surface is 100% how it came from the factory before paint
I think you took my comment WAY too seriously !!
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Re: media blasting body to prepare for resto
[Re: Stanton]
#1620768
05/19/14 04:19 PM
05/19/14 04:19 PM
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Joined: Jan 2003
Posts: 5,948
British Columbia
chrisf
master
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master
Joined: Jan 2003
Posts: 5,948
British Columbia
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Quote:
Quote:
Stanton. The beer can is smooth no damage. Shake all you want. Soda isn't abrasive it doesn't cut. the surface is 100% how it came from the factory before paint
I think you took my comment WAY too seriously !!
ahhh sarcasm. sorry. I take blasting seriously. 
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Re: media blasting body to prepare for resto
[Re: shakerjoe]
#1620770
05/20/14 08:37 AM
05/20/14 08:37 AM
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Joined: Jan 2003
Posts: 2,469
NE Ohio
mopar383
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,469
NE Ohio
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I know before I send anything to the blaster I strip it down to bare. That way he only has to work the concern areas and not the whole panel.
81 Dodge Ram My dad bought brand new... my 17 year old sons project
Jeep Wrangler Unlimited .....my wife's baby
Durango....my DD
Caravan...an awesome parts hauler
72 Dart
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