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 Post subject: blasting media
PostPosted: Thu Feb 26, 2009 7:43 pm 
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Does anyone know where I can buy some blasting media (plastic beads or better yet soda grit) either online or in WA?

I need to do some surface rust removal on the sunshine and I don't have a lot of metal left so grinding is probably not an option. Any suggestions for non abrasive rust removal options welcome!

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PostPosted: Thu Feb 26, 2009 7:52 pm 
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Location: Under the bonnet son!
Burwell can fix you up with any grade of any type of garnet, glass or bead.
http://www.burwell.com.au/default.asp?id=1

Burwell WA
Address: 8 Possner Way
Henderson, WA 6166

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PostPosted: Thu Feb 26, 2009 8:32 pm 
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cheers Mick! that sorts out that question, those guys have everything!

If anyone has any suggestions of other solutions (maybe chemical) I'd love to hear them.

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PostPosted: Thu Feb 26, 2009 8:38 pm 
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Soda blast or dry ice.
google "ice-tech" for the machine that does it.
KB

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PostPosted: Thu Feb 26, 2009 9:33 pm 
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I have been using De-ox gel, made/distributed by the same people that do POR-15.

Its a paste that you brush on and then cover in gladwrap to stop drying out and then 12-24 hrs later go and give a bit of a scrub and wash off with water and hey presto clean shiny metal...
if very heavy pitted surface rust may need a couple of goes. i found that the products such as rust disolver (about 30% sulfuric acid) dont do that great a job if its heavy only good for cleaning metal realy in my opinion

Gets expensive though, $50ish per kg and im on to my 2nd one and may need another one (i had LOTS of rust), makes me think maybe i should have sandblasted, oh well

Brenton

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PostPosted: Thu Feb 26, 2009 9:34 pm 
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double post sorry

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PostPosted: Thu Feb 26, 2009 9:58 pm 
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I have about 1/2 a square metre to do, heavy surface rust (very little pitting) is this stuff the go?

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PostPosted: Thu Feb 26, 2009 10:27 pm 
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You can pick up glass beads for blasting at repco, they work well with a high pressure high volume gun, but I reakon around a 200-300 grit aluminium oxide on a lower pressure is the way to go. It has the substance to remove quickly but won't damage like the rocks in sand.

Although if you really want to remove things quickly then buy a bag of sand from the landscape supplier and sift out anything that won't fit through the gun (around 3mm) then let loose :twisted:

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PostPosted: Fri Feb 27, 2009 12:27 am 
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I can get the sand that locomotives use for traction for free (very carefully graded pure white sand) but I want something less intrusive and damaging

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PostPosted: Fri Feb 27, 2009 8:08 am 
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Location: Under the bonnet son!
I got in big trouble for doing that :(

Silicosis is it's name...

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PostPosted: Fri Feb 27, 2009 8:24 am 
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albino235 wrote:
You can pick up glass beads for blasting at repco, they work well with a high pressure high volume gun, but I reakon around a 200-300 grit aluminium oxide on a lower pressure is the way to go. It has the substance to remove quickly but won't damage like the rocks in sand.

Although if you really want to remove things quickly then buy a bag of sand from the landscape supplier and sift out anything that won't fit through the gun (around 3mm) then let loose :twisted:


The swimming pool filter sand I bought at the pool shop has written on it " it is illegal to use this product for sand blasting" :roll:

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PostPosted: Fri Feb 27, 2009 8:33 am 
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Ben,

I used to buy off Temco http://www.temco.com.au/
They are the biggest suppliers in WA of blasting gear.

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PostPosted: Fri Feb 27, 2009 9:13 am 
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Wombat wrote:
The swimming pool filter sand I bought at the pool shop has written on it " it is illegal to use this product for sand blasting" :roll:


Any idea why?


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PostPosted: Fri Feb 27, 2009 9:27 am 
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You can get soda from Agricultural Supply or Fodder stores, they use it to put in the stock feed.

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PostPosted: Fri Feb 27, 2009 10:14 am 
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Angusdog wrote:
Wombat wrote:
The swimming pool filter sand I bought at the pool shop has written on it " it is illegal to use this product for sand blasting" :roll:


Any idea why?


Because sand has been banned due to inhaling the dust causes silicosis a very nasty and fatal lung disease.

Think open air in the country and full face respirator/dust mask :wink:

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