Sandblaster sand and grit Where do you get it

Garnet is a good media but may be too agressive for soft surfaces. I go to a local sandblasting place and they let me fill a bucket from the floor of the blast room. It needs to be run through a stocking as the paint flecks in it will cause blockages in the pick up line.
That said, I only blast small items at home - I find it a lot quicker to take anything larger than a brake drum down to the local blasting shop and he puts a coat of industrial primer on at the same time.

I found Super Cheap carry grit in small buckets. Ok for little stuff in one of those cabinets you can buy.

i have a five gallon drum of beads and garnet which you can have, but you have to pick it up.
and as for the what to use
1 not beach sand -too much salt, you only implant what you are trying to get rid of.
2 glass beads are thr perfect finish, various grades, but you need a compressor that can handle the work.

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Originally Posted by ladas

Have a look at

http://www.mysunshinecoast.com.au/to...5&styleID=2801

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Sandblasting can cause surface tension & brittleness in metal objects which can cause cracking under stress, I would get some advice, esp. as you are doing wheel rims which have to endure extreme loads and stresses, Regards Frank.

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Originally Posted by JDNSW

And if it was an old house, as you imply, I'll bet the paint on it was lead based! I can't imagine anyone sandblasting a house anywhere, let alone in a built up area.

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John

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He bought the place in 1979 and did the job shortly after. The house had probably not been painted since before WWII and would have been lead based paint. No blaster in the yellow pages would touch the job. The guy who did it was, as I wrote, a fly by night, recommended by a mate of a mate of a mate in the pub and wanted folding. Council regs even then forbade blasting on site except under stringent conditions. I saw the job afterwards and was impressed by the cleanliness of the timber, but not by the mess left behind.

Media blasting is not a cure all. I bought a pallet jack at an auction of a fibreglass manufacturer which had been used to hold and move bits being spray glassed. It was covered in many thick coats of glass and resin. The blasting could only chip around the edges. I finally cleaned it by cracking the coatings with a sledge hammer and chiselling off any difficult bits.

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Originally Posted by isuzurover

As well as all that, it is highly illegal to steal sand from the beach.

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Bugger lucky they did not catch the 90 the last time i went to fraser. I was getting sand out of it for months :D :D :D

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Originally Posted by Tank

Sandblasting can cause surface tension & brittleness in metal objects which can cause cracking under stress, I would get some advice, esp. as you are doing wheel rims which have to endure extreme loads and stresses, Regards Frank.

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Really well you learn a new thing every day. I want to do rims and then the camper trailer so i don't want anything that will weeken stuff. I thought it would just striop the rust and paint and was a lazy way to do it rather than a sander, also easer to get into those smaller places

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Originally Posted by Reads90

Really well you learn a new thing every day. I want to do rims and then the camper trailer so i don't want anything that will weeken stuff. I thought it would just striop the rust and paint and was a lazy way to do it rather than a sander, also easer to get into those smaller places

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It probably is suitable for that purpose, but you need to consider both the media used and the size of the particles - it is the larger particles such as steel shot or large grains of grit that can affect the surface properties of the steel - and you use these when that is what you want to do, for example to work harden the surface, which you probably don't want with wheels (probably immaterial with the trailer).

John

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Originally Posted by JDNSW

It probably is suitable for that purpose, but you need to consider both the media used and the size of the particles - it is the larger particles such as steel shot or large grains of grit that can affect the surface properties of the steel - and you use these when that is what you want to do, for example to work harden the surface, which you probably don't want with wheels (probably immaterial with the trailer).

John

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Nah non of the paint is on too well so just need a light go over and the rust is very light surface rust so just need a light grade really

One of the reason for doing it is to strip it back and rust proof and then put a better paint and more of it back onto the trailer.