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02-12-2007, 11:05 AM
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#1 |
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Registered User
Join Date: Jan 2007
Location: minden la
Posts: 80
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sandblasting question
what is the best material to use in a blaster for cleaning an old rust pitted hood?? i heard sand will warp. is this true. how about metal slag?
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1972 C-10 SWB 350CI TURBO 350 TRANNY, TILT, POWER WINDOW & BRAKES, TANK UNDER THE BED W/MARKER LIGHT FILLER. 3.08 GEARS, CLASSIC AIR  :hit2: :hit2: 4 WHEEL DISK BRAKES2000 chevy blazer 1990 nissan pick-up 1984 mazda pick-up (son's project truck) |
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02-12-2007, 11:11 AM
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#2 |
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Registered User
Join Date: Jun 2003
Location: Mtn. Home, Idaho
Posts: 906
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Re: sandblasting question
If you can find copper slag it will leave a very nice smooth surface, the company that does my blasting and powdercoating uses this and i usually only need a double wet coat of fill primer to achieve a smooth paintable finish
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02-12-2007, 11:12 AM
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#3 |
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Chevy Truck Addict
 
Join Date: Aug 2006
Location: Kelowna, BC
Posts: 1,176
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Re: sandblasting question
Any material can warp a large "flat" surface. The friction of the media hitting the metal builds heat which is what causes warping. If you keep shooting the same place for too long it can really heat up that area and warp the panel. Similar to welding body panels, you have to be very careful not to build too much heat because it will "pop" the panel you are welding on. Point of this story... no matter what you use, keep moving. If you hit a stubborn spot, hit it a little and come back to it (maybe several times).
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. 1970 Chev C/10 SWB, 355 SBC, 700R4, 3.73 Posi, Air Ride (Click to view Build Thread) (SOLD) 1978 Chevy C/10 SWB 1970 Pontiac Lemans . Last edited by C10-Driver; 02-12-2007 at 11:23 AM. Reason: Added comment |
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02-12-2007, 11:28 AM
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#4 |
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Skinned knuckles
Join Date: Oct 2006
Location: Longview, Washington
Posts: 1,126
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Re: sandblasting question
I have a cheapie Campbell gun and an old Craftsman hopper that I use on small jobs. The hopper has a screen and I've used play sand with good results. I assume that you'd still need to use safety precautions just like anything else, but I figured that it's cheap enough and more "get it all over your driveway" friendly.. With my compressor, there's enough pressure for small jobs, and like mentioned already, you don't want to use it for large flat surfaces.
I had rust around my rain gutters, so I cleaned out the caulking and blasted it clean. Works really good for the hard to reach areas.
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'72 C-10 longbox soon to be short step! '72 Chevelle (sold in January)  '07 Sebring '01 Ranger (I've gotta long commute..) If you try to fail, and succeed, which have you done? My build thread - http://67-72chevytrucks.com/vboard/s...d.php?t=276904 |
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02-12-2007, 11:32 AM
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#5 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: sandblasting question
sand doesnt warp bad blaster operators warp
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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02-12-2007, 11:37 AM
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#6 | |
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GEARHEAD
Join Date: Jan 2007
Location: CENTRAL,PA
Posts: 2,284
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Re: sandblasting question
Quote:
  and some are warped. 
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02-12-2007, 11:37 AM
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#7 | |
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Chevy Truck Addict
Join Date: Aug 2006
Location: Kelowna, BC
Posts: 1,176
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Re: sandblasting question
Quote:
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. 1970 Chev C/10 SWB, 355 SBC, 700R4, 3.73 Posi, Air Ride (Click to view Build Thread) (SOLD) 1978 Chevy C/10 SWB 1970 Pontiac Lemans . |
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02-12-2007, 01:59 PM
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#8 |
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Registered User
Join Date: Jul 2006
Location: Pittsburgh, PA
Posts: 204
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Re: sandblasting question
Out of all the abrasives out there, I like Aluminum Oxide the best. My buddy has a full-blown blasting operation with roll-in booth and that is what he uses for frames and bodies...He even TRIED to warp a hood once and had a VERY hard time doing it...
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Project Family Values Build Thread Vehicles/Projects: -1971 C10 SWB Fleetside! Gathering parts now, will begin frame-off resto soon... Pleasure in the job puts perfection in the work. -Aristotle |
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02-12-2007, 06:08 PM
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#9 |
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Cowboy Fan for Life!!!!!!
Join Date: Apr 2002
Location: Amelia, Virginia
Posts: 2,921
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Re: sandblasting question
Anybody ever used baking soda?
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1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS |
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02-12-2007, 06:13 PM
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#10 | |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: sandblasting question
Quote:
good for biskits and cake// can leave residule which ends up like battery acid eating stuff away /major paint companies wont warrentee paint on a soda blasted finish
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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02-12-2007, 06:21 PM
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#11 |
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Registered User
Join Date: Jan 2007
Location: Illinois
Posts: 351
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Re: sandblasting question
Where might be the best place to buy these different abrasives. Such as a local hardware store of some sort??
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02-12-2007, 10:23 PM
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#12 |
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Cowboy Fan for Life!!!!!!
Join Date: Apr 2002
Location: Amelia, Virginia
Posts: 2,921
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Re: sandblasting question
Thanks cdowns, I had heard about using it, didn't realize there would be paint issues. Appreciate it............Jerry
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1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS |
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