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#1
10-10-15, 23:43
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Wet blasting inhibitor
Regarding the discussion on wet soda blasting steel here is something I came across in my seagoing days which may be of interest and use.
It is called wet blast inhibitor and we used it onboard to prevent the flashing off to rust on bare steel that we water blasted with a copper slag grit medium. It allowed the crew to blast for the full day then let the steel dry before priming the next day without the formation of rust overnight on the surface of the bare steel. I still use it on my project today, as even when bare steel parts comes out of the molasses tank it will still rapidly get a light patina of rust on it in all but the driest weather conditions. By dunking it in tank of water with a very small amount of this chemical added, the part stays free of rust and can be painted the next day or even a few days later if kept in a dry location. Larger parts I spray after coming out of the tank with a solution of this chemical using a simple garden sprayer. Cheers,
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F15-A 1942 Battery Staff Jacques Reed 
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#2
11-10-15, 03:09
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Betwixt them both
Hello All,
Thanks for the replies. The Soda unit I posted up earlier is a dry powder version. I suppose for heavier stuff a media blaster like this one could be used and betwixt them both a very handy range of jobs could be done. http://www.ebay.com.au/itm/New-Porta...item2ee71f4bb4 There are smaller gravity fed media units available however they have very limited capacity. http://www.ebay.com.au/itm/HEAVY-DUT...item43c81d387c. I reckon that they would run out just as you get into the swing of things. Then you would have to take off all the safety gear and fill it up again all too quickly. The blurb about dry soda blasting says something about how it forms a coating on bare metal that prevents rust and how this needs to be removed before painting. Therefore, if there is some time between cleaning and the opportunity to paint then they reckon that the surface should remain rust free for a while - notice the words "they reckon", "should" and "for a while"  I have a couple of engine blocks to clean up (soda) and wheel rims (Media) followed by soda? Maybe spot bad rust with media on the rims then finish off with soda? Kind Regards Lionel
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1940 Chevrolet MCP with Holden Built Cab (30 CWT). 1935 REO Speed Wagon. 1963 Series 2A Army Ambulance ARN 112-211 Series III ex-Military Land Rovers x 2 Last edited by Lionelgee; 11-10-15 at 03:19.
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Hybrid Mode
