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Well Lisa, welcome to the world of sandblasting.
I make tombstones for a living and carve the granite and marble with a
sandblaster, if any one knows what its like, I do.
It's no fun, but a very good way to achieve the goals your after.
I have lots of tips for any one needing knowledge of the techniques used
with a sandblaster.
I can post stuff here, or email me off list for private help.
I enough people are interested, I'll answer questions on-list.
Let me know, and good luck.
Henry
> Ok, this weekend I needed to sandblast the winch bumpers for
> the M37, and the soft top windshield for the M38. I finally
> decided to assemble the sandblaster that I had bought while
> on sale from Harbor Freight.
> I went to my local home improvement store for sand. They
> asked what it was for, and I told them sandblasting, and
> that I was using a cheap Harbor Freight sandblaster. They
> recommended No. 30 sand, so I bought two 100 lb. bags @
> 5.69/bag.
> I poured the sand in the funnel into the blast tank, hooked
> up the air, and turned the valve. Viola! Sandblasting! Then
> nothing. A clog. Then another. OK, it's late, fight with it
> tomorrow.
> Tomorrow comes, and I decide to try sifting the sand. I cut
> a circle from the lid of an empty kitty litter bucket, and
> place regular aluminum window screen over the bucket, then
> put the lid w/hole on the bucket. I scoop a coffee can of
> sand onto the lid and shake the bucket. Several larger
> grains of sand remain on the screen. I continue this until
> the 3gal bucket (about 30lbs of sand) is full.
> I remove the nozzel and run air through the tank and hose to
> make sure it is clear. Then I fill the tank with the sifted
> sand. Air pressure on.....Sandblasting! This time, it
> doesn't stop until the sand level is low and the tank
> requires shaking.
> So what do I think?
> You need to sift the sand.
> You need a 5hp compressor
> You need to wear the sandblast hood, pants, and a long
> sleeved shirt. The sand will bounce back and it stings!
> You don't need the rubber faucet type washer they give you
> for the ceramic nozzle. Works better without it.
> It is worth the money. I used almost all of the sand (200#)
> to sandblast some stubborn paint from the bumpers and
> windshield frame. I am sore and tired, after all, I moved
> the sand from the bags to sift into the bucket, then from
> the bucket to the tank. This sandblaster will pay for itself
> real soon.
> I recommend using paint remover and a wire brush to remove
> as much unwanted material as possible, using the sandblaster
> for the rust and really stubborn stuff.
> BTW, it looks like an area of my windshield was patched with
> JB Weld (used like bondo). The sandblaster would not remove
> it! I will have to hammer and chisel it off. That JB Weld is
> tough stuff!
> Now, for an HVLP paint gun....
> Lisa
>
>
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This archive was generated by hypermail 2b29 : Thu Mar 02 2000 - 22:30:40 PST