Egon
Epic Contributor
Let us know how you did it and how it turned out. I've got the exact same job looking at me this summer.
Egon
Egon
Sandblasting
- Thread starter DannyD
- Start date
- Views: 3057
mrcaptainbob
Platinum Member
I used a pressure sand blaster a while back. Borrowed it and the hooded jacket. Also used my son's much larger compressor for that job. Had a LOT of blasting to do. But I also have the much smaller siphon unit. Stick the tube in a fresh bag of sand and it does fine using my 11G Sears dinko compressor. It worked really well cleaning up the brick around the fireplace (Ten foot long x floor/ceiling high.) It does fine for light jobs. Most important here is to cover all skin/ filter all breathing, completely cover ears and eyes. The wire strippers are okay, but blasting nicely etches the surface and gets in ALL the nooks/crannies/pits/corners and preps the surface quite nicely for your primer. THere's a blasting medium called Black Magic (I think....) that is far superior to any of the sands for what you're planning. THis could be the excuse ya' need for a 'better' (more power) compressor!
JimR
Elite Member
</font><font color="blue" class="small">( THere's a blasting medium called Black Magic (I think....) that is far superior to any of the sands for what you're planning. )</font>
Black Beauty is the name and it works great. I did my old 19' boat trailer years ago that I owned. I found that grinding was much faster than sandblasting. I used my siphon feed blaster for the hard to reach places. I also flipped the trailer over to do the underside with my old Ford 8N that I had.
Black Beauty is the name and it works great. I did my old 19' boat trailer years ago that I owned. I found that grinding was much faster than sandblasting. I used my siphon feed blaster for the hard to reach places. I also flipped the trailer over to do the underside with my old Ford 8N that I had.
LoganWildman
Silver Member
My last sanbblasting project was an old 10 ft steel dump body for my 1T truck. I lost count of the number of bags of sand I went though to blast the whole thing, but the finished results were worth it.
I used an 80lb pressure unit, and hooked 2 4-1/2hp air compressors in parallel to be able to maintain a constant supply of air.
I too heard that black magic worked well, and bought a bag to try but I didn't have a tip for the sandblaster big enough to handle it, and the gun kept plugging up, so I went back to silica sand.
I used an 80lb pressure unit, and hooked 2 4-1/2hp air compressors in parallel to be able to maintain a constant supply of air.
I too heard that black magic worked well, and bought a bag to try but I didn't have a tip for the sandblaster big enough to handle it, and the gun kept plugging up, so I went back to silica sand.
OkieG
Veteran Member
<font color="blue"> Any hints, suggestions, </font>
With a project as large as a trailer, you may not have garage space for this job. But, that's a good thing. My suggestion is do the blasting outside. Wear a hood and respirator, but stand upwind, too. All my projects have been small, but all have been done outside. One advantage is no clean-up. The greatest advantage is no air fogged with silica dust for you to worry about breathing.
By the way, having tried both, a pressurized tank blaster is far better than a syphon feed.
OkieG
With a project as large as a trailer, you may not have garage space for this job. But, that's a good thing. My suggestion is do the blasting outside. Wear a hood and respirator, but stand upwind, too. All my projects have been small, but all have been done outside. One advantage is no clean-up. The greatest advantage is no air fogged with silica dust for you to worry about breathing.
By the way, having tried both, a pressurized tank blaster is far better than a syphon feed.
OkieG
fractal
Gold Member
</font><font color="blue" class="small">( Any hints, suggestions, model numbers etc,. would be greatly appreciated )</font>
I was in the same situation as you last year. I started off with a suction feed blaster, bought a pressure blaster. I started off with a 2 gallon, 1hp compressor. Was given a 6 hp, 30 gallon compressor.
My conclusion was - next time I have a project like this I am gonna pay someone to do it. I probably spent 200 dollars to strip the paint from a small patio table (2ft x 2ft x 1 1/2 ft), went through 4 or 5 of the big 90 pound bags of sand and cursed a lot. The end result is nice, but it woulda been just as nice if I had paid someone to strip it clean in their ecologically safe strip room.
If I somehow forgot how bad it was and decided to try it myself again, I would definately rent a compressor with sufficient cfm to do the job as I have come to the conclusion that no 120v consumer grade air compressor can provide the volume of air needed for serious sand blasting.
As for suggestions - be safe. Don't breath the dust if you blast with silicon sand. That and buy yourself a painters sock. They are cheap and will keep the sand out of your ears
I was in the same situation as you last year. I started off with a suction feed blaster, bought a pressure blaster. I started off with a 2 gallon, 1hp compressor. Was given a 6 hp, 30 gallon compressor.
My conclusion was - next time I have a project like this I am gonna pay someone to do it. I probably spent 200 dollars to strip the paint from a small patio table (2ft x 2ft x 1 1/2 ft), went through 4 or 5 of the big 90 pound bags of sand and cursed a lot. The end result is nice, but it woulda been just as nice if I had paid someone to strip it clean in their ecologically safe strip room.
If I somehow forgot how bad it was and decided to try it myself again, I would definately rent a compressor with sufficient cfm to do the job as I have come to the conclusion that no 120v consumer grade air compressor can provide the volume of air needed for serious sand blasting.
As for suggestions - be safe. Don't breath the dust if you blast with silicon sand. That and buy yourself a painters sock. They are cheap and will keep the sand out of your ears
SPIKER
Elite Member
yep wear everything you have and it's been my experiance you will STILL end up with sand in you're underwear!!! I think it is a sandblasting black hole, similar to the pucker factor the more you blast the more sand MAGICALY appears in the shorts! /forums/images/graemlins/blush.gif
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SPIKER
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SPIKER
wroughtn_harv
Super Member
If there's interest I can do a photo step by step on sandblasting designs in stone next week.
Sometimes it's hard to figure out exactly what to include in such a deal. One doesn't want to get too basic but then too basic varies with perspective.
Sometimes it's hard to figure out exactly what to include in such a deal. One doesn't want to get too basic but then too basic varies with perspective.
LWFrisk
Silver Member
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- 35 Miles north of San Diego CA
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- John Deeres, 212, 420, 425
Harv
I would sure like to see how you blast away the rock to get the antique french style letter D in a positive image. Lisa would like to try her luck at doing some sand etching on glass. I picked up a small sand blaster last week from Harbor Frieght to clean up the burned wheel and fender on my Jeep and several other thing that were damaged by the fire.
Lots of photos too please.
Leo
I would sure like to see how you blast away the rock to get the antique french style letter D in a positive image. Lisa would like to try her luck at doing some sand etching on glass. I picked up a small sand blaster last week from Harbor Frieght to clean up the burned wheel and fender on my Jeep and several other thing that were damaged by the fire.
Lots of photos too please.
Leo
SPIKER
Elite Member
yep we did some sand eching of glas back in the 80's. it was back windows for cars as I worked in a body shop though this we did in vocational school for auto body work... (not sure why I went for body work as I had been working on cars with my older brothers for years! and had painted my 1st car by the time i was 14 yrs old...) I actually knew more about body work than the 2nd year instructor! though my 1st year instructor was awsome... He did LEAD work for years and died about 4 or 5 years after I graduated... I was at that time working on aircraft in the us af. and still kept in good contact with him, his main problem was sugar with lung cancer leading back to the chemicals used for all those years. /forums/images/graemlins/frown.gif
anyhow be sure to use high quality tape with a soft surface and possably several layers, we found masking tape to work but it took a light hand, and even finish was the hardest part. (one part would be rough and very white while an inch away it was more opaque) it all has to do with the angle the sand hits the etching surface. Hit it at 90 degrees and risk shatering the glass hit it at 45 and the finish is more translucent. so finding hte right angle is the hardest part. also an EVEN FEED of sand! the syphon ones won't work well for clear glass etching but for stone or concrete it would work OK I assume! as I never tried etching those things.
Mark M
anyhow be sure to use high quality tape with a soft surface and possably several layers, we found masking tape to work but it took a light hand, and even finish was the hardest part. (one part would be rough and very white while an inch away it was more opaque) it all has to do with the angle the sand hits the etching surface. Hit it at 90 degrees and risk shatering the glass hit it at 45 and the finish is more translucent. so finding hte right angle is the hardest part. also an EVEN FEED of sand! the syphon ones won't work well for clear glass etching but for stone or concrete it would work OK I assume! as I never tried etching those things.
Mark M