Cheap home sandblasting...Attn: CJ Joe - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-03-2000, 11:22 PM Thread Starter
 
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Cheap home sandblasting...Attn: CJ Joe

The ideas that CJ Joe posted about his cardboard box sandblasting cabinet go me thinking...
I'm trying to avoid buying one of those premade bench top cabinets because i won't be using it all that much to make it worth it. So here's my idea...
I'm planning to buy one of those clear plastic 66quart or so tubs with a lid made by Rubermaid or similar company. I'll cut a couple of holes in it, buy a pair of sandblasting gloves from harborfrieght tools for $5 and duct tape them to the holes in the plastic tub. Then I'll cut a hole in the bittom for the sand to drain out, Get one of those $15 sand blaster attachments for my air compressor, cut a couple more holes in the tub for the air hose and sand hose, put a piece of metal mesh in the bottom and there we go...el cheapo temporary blasting cabinet.
See any reasons why this wouldn't work? Obviously if i pointed the blaster directly at the plastic it would go through eventually, so I'd have to avoid that.
Did I miss any important parts a blasting cabinet should have(besides METAL sides and bottom [img]/wwwthreads_images/icons/smile.gif[/img] )?
thanks

Dan 84 CJ-7,Weber,HEI. 95 ZJ,V8. http://netnow.micron.net/~wdohrn/
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post #2 of (permalink) Old 02-04-2000, 03:48 AM
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Re: Cheap home sandblasting...Attn: CJ Joe

A guy i know has one made from a old small refrigarator.used the wire shelves to set pieces to be blasted on,easy access via full door
in front.just cut center area however much you want and put plexa glass see thru in it.old crisper trys catch most the sand.tho i think a funnel bottom back to a hopper would be better,oh,he has a flood light mounted in top to be able to see.Also i used to work at a monument place and i
had a brass mesh screen over my view window,it kept window from being ruined,lasted a long time,tho i dont know where it is available,just a few more ideas.BTW i blasted with 120 lbs air 1 inch hose with 1/4 inch nossle opening,and used alumium oxide adbrasive,now thats fun to blast with.by the way he just had a rectangle opening to blast thru as did we were i worked,just use a strip of old rubber inner tube with two holes cut in it for your hands in a X shape ----> [ x x ] this works ok as it is what i used where i worked,and the blaster i used could cut a 4 inch hole thru
solid granite monuments in minutes and never worry about sand hitting anything rubber,it wont hurt it,fact we used a rubber glue on sheet to protect
stones that was only a little over 1/16 inch thick,just bounces off of rubber, rubber gloves as well...i have saw a lot of diffiuclty with home systems due to dampness clogging,sand must be kept real dry.Along with dry air supply.And if you want to do things like pintons,use glass beads and not sand.I know they are best but
i dont know where you can get them. Also if you are going into a decent setup,a cabinet exaust fan is well worth having{exausted to outside) .And use like a 250 watt
flood lamp,it will eventually frost,but that wont hurt it.front glass is thick. Use a piece of window screen to filter used sand back to hopper.And most
of all,NEVER EVER go near it without eye protection,tight fitting goggles are best,they leave no where for that stray grain of sand to enter.And
from years of blasting,even in a factory enviroment,never take goggles off till you use the air hose and blow all sand and dust off of you,from top
of head down,i assure you its cheaper(doc i got sand in my eye!! doc? where are you doc? i cant see you!) and less painless than sand in your eye hours later that just happened to be hiding and waiting in your hair,etc.
.


post #3 of (permalink) Old 02-04-2000, 09:33 AM
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Re: Cheap home sandblasting...Attn: CJ Joe

Good idea, plastic tub. Go for it. I've really been surprised that there is really little or no wear on my cardboard box. If I'm doing smaller or delicate parts (like pistons) I'll turn down the air pressure. Of course the media makes all the difference. Again, I'm using glass bead which is fine for delicate parts. Big parts just take longer. Remember, it's not a production situation. If it takes me three times longer it still beats making two trip across town. I'll probably buy some more aggressive media since this is working so well.

I never thought about using a Rubbermaid container (my wife has 'em all over the garage). Hey the old frig would work. In fact I recall once seeing an old dryer converted to a cabinet (they are big!). If you had the room I'm sure some appliance shop would be happy to have you haul it away. And hey, I never thought of buying rubber gloves! I got lots of leather work gloves around the garage, I just duct taped a pair to the sleeves I cut off an old shirt, then taped that around the round holes.

You will have to have some manner of work light. With all the grit and dust flying around it's hard enough to see. If I were to take more time and do it again I'd put more slope in the bottom (15-45 degrees). Yeah, a funneled bottom with a mesh "floor" would be perfect. My recovery tube does not always flow freely. The shop vac would actively draw it out (not air tight enough to rely on incoming air) but more importantly it would draw out and filter the dust. That nasty brown dust that was the rust on your manifold is now flying around. I wear a dust mask and was still blowing crud into the kleenex, not good.

I'll try to take some pictures this weekend to post. I've been meaning to post some pictures of other stuff on the jeep, like the vertical mount dual Optimas, etc. Dan, let us know how the plastic tub works.

1968 CJ-5 225 V6/T14/18/27frt/44rr

If life gets boring, risk it!
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