reads90 Posted January 19, 2007 Share Posted January 19, 2007 I am looking at getting a sand blaster as i need to strip and repaint my trailer and thought this would be the best was to get rid of paint and surface rust (thought might come in usefull for the landy too). So i can easyly repaint the trailer. With rust proof stuff and new paint. Want to use with my compressor but what sand do you use. Is it just normal sand (hope so as i just pick that up of the beach) or does it need to be proper sand that you have to buy form a special shop or somthing Will a sand blaster do the job i want from it. Ie take off paint and surface rust Also what is your views on these two items, which is the best one to have sand blaster snad blaster 2 Quote Link to comment Share on other sites More sharing options...
GBMUD Posted January 19, 2007 Share Posted January 19, 2007 You need to buy proper sand for dry blasting - unless you want Silicosis, the disease coal miners get from breathing silica. Chris Quote Link to comment Share on other sites More sharing options...
neilwilson Posted January 19, 2007 Share Posted January 19, 2007 I was watching a program on UK History yesterday about WW2 tank restorers. They were sand blasting an old Sherman using a sand mixture supplied from metal casting factories. The sand had partly fused into glass and was then crushed. It worked a treat and brought the rust and old paint off in no time. Mind you the bloke using it was in a full protective body suit with respirator and helmet as it looked fierce stuff. Neil Quote Link to comment Share on other sites More sharing options...
GBMUD Posted January 19, 2007 Share Posted January 19, 2007 IIRC I think that the correct, safe blasting media is the ash from power stations... Or something like that. Chris Quote Link to comment Share on other sites More sharing options...
rtbarton Posted January 19, 2007 Share Posted January 19, 2007 If you're buying a hobby type gritblaster you want J-Blast Supafine, sold by Chemco. It's copper slag. It is illegal to use sand with compressed air due to silicosis problems as mentioed above. Expect to pay about £5.00 + vat for 25Kg. It's supposed to be single use, but I recyle it. Don't bother with the hand-held gun types, you'll always be re-filling it and the steel nozzles don't last long. They are awkward to get into tight corners. I have an Ace gritblaster, it has a tungsten carbide nozzle and last about 45 mins on a pot full, It's been in regular use for three years and I've not changed the nozzle yet due to wear. I've modified it to take very fine stuff. Note that the mixer, hoses, nozzle, lid gasket and eyebolts are all consumables. I use a Clarke 14 cfm compressor and it struggles after a while. As the air gets hot it looses its mass and absorbs moisture. I have made an air-fed helmet from a plastic bucket, an aperture to see out of is covered with a piece of Polycarbonate cut from a drinks bottle, this has to be renewed frequently. Air is fed from outside my booth from a Metro heater motor. If you're working outside you'll need a good dustmask (Screwfix do one 76804-85)and face protection (22375-85). Again tape a piece of polycarbonate to the shield to preserve it. Quote Link to comment Share on other sites More sharing options...
Dark green 90 Posted January 20, 2007 Share Posted January 20, 2007 I used to do a bit of grit blasting (shot) and always used CLEMCO products, might be worth a look ps. dont grit blast your landy it will melt away in front of you. Quote Link to comment Share on other sites More sharing options...
rtbarton Posted January 20, 2007 Share Posted January 20, 2007 Yup CLEMCO not CHEMCO! Quote Link to comment Share on other sites More sharing options...
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