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grit blasting

Posted: Fri Jun 28, 2013 7:04 am
by chriss
just wondering if anyone has got or used a grit blasting cabinet for cleaning small items, if so are they worth having

Re: grit blasting

Posted: Fri Jun 28, 2013 8:12 am
by scoobyjim
Yes they are fantastic. If budget allows get a pressure fed one not gravity fed. You need a.large compressor aswell. There is no better way of cleaning than blasting.

Re: grit blasting

Posted: Fri Jun 28, 2013 9:49 am
by chriss
yes iv'e got good size compressor and 63 ltre pressurised pot though with medium grit did seem to clog but the stuff was everywhere,thats why i was thinking of the cabinet about.9x.6x1.4 is that what you use

Re: grit blasting

Posted: Fri Jun 28, 2013 3:16 pm
by Pavel
I would suggest that you might find some internet research of some benefit as far as the medium, grit, is concerned. Many professionals have found that the use of glass or plastic beads do a better job on thinish metal panels or just to remove paint rather than rust.

Pavel

Re: grit blasting

Posted: Fri Jun 28, 2013 5:03 pm
by chriss
i'm sure it is glass beads i used but i think it might be too coarse, when working was good but wasn't constant so might try the fine grade

Re: grit blasting

Posted: Fri Jun 28, 2013 6:50 pm
by scoobyjim
I made mine from ply. 6ft long 4ft high and 4 ft deep so i can get bonnets and wheel rims in. Lined the inside with 10mm rubber to protect the ply. Them sat that on my pressure pot.

Re: grit blasting

Posted: Fri Jun 28, 2013 9:57 pm
by chriss
is there any chance of some pictures i would be very interested in them

Re: grit blasting

Posted: Sat Jun 29, 2013 8:58 pm
by scoobyjim
Ill get some this week fir you.

Re: grit blasting

Posted: Sat Jun 29, 2013 9:27 pm
by chriss
that would be fantastic, also what do you do about dust extraction

Re: grit blasting

Posted: Wed Jul 03, 2013 4:30 pm
by Dandy Dave
I have had a Model 970 Detailer for over 20 years and have been very happy with the unit...

http://www.tptools.com/Pro-Shop-34-58-W ... inets.html

Good company and excellent product. I have a 5 HP Cambell Hausfield compresser that rates at 19 CFM @ 100 PSI. Air compressor tank size is not as important as the ability for the compressor its self to keep up. That is where Cubic Feet Per Minute comes into account. Dandy Dave!

Re: grit blasting

Posted: Wed Jul 03, 2013 5:34 pm
by henk
We use about the same model at school.

Image

Works well but give a lot of dust by the doors. Even with a dust cleaner.
Paint is easy to remove. Rust is a bit harder. Normal grit is cheap. Glass is 4 time expensive, but give a great surface.
Price is about 650 euro's

Re: grit blasting

Posted: Wed Jul 03, 2013 9:10 pm
by chriss
just looked at compressor all i can see is 3hp motor and 150ltre tank

Re: grit blasting

Posted: Thu Jul 04, 2013 7:29 pm
by scoobyjim
Image

Image

Image

Re: grit blasting

Posted: Thu Jul 04, 2013 10:07 pm
by chriss
thanks for the photos that looks a decent bit of kit certainly given me some food for thought

Re: grit blasting

Posted: Thu Jul 04, 2013 10:20 pm
by scoobyjim
The pressure pot is the expensive bit. The rest is a box with a sloped floor. Seal every joint. Plenty glass and light. If you use proper grit you wont need much extraction but if you use sand you wont be able to see a thing.

Re: grit blasting

Posted: Fri Jul 05, 2013 12:47 pm
by Dandy Dave
I've use a Low Silica Sand called Black Beauty for years. Cuts rust very well. Older paint also comes off well. Some of this newer Acylic paint is like rubber and is the hardest stuff I have ever seen to blast off. Even paint remover does not touch it. I usually use oven cleaner and high pressure wash parts first before blasting heavy castings that are full of grease and oil. The secret is to get loose stuff and anything the sand will just stick in off first. Dandy Dave!

http://www.blackbeautyabrasives.com/pro ... asives.php