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Quantity of sand needed for blast?

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jm

08-17-2001 18:46:59




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I have a 1958 JD 420T that I am about to sandblast. Could anyone give me a rough estimate of how many pounds of sand that I need to complete the job. I have a 100 CFM compressor if that helps. Thanks.




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Wow, 100 CFM?

08-20-2001 10:09:44




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
You must mean 100 PSI. At my place of employment we have a 7.5 HP air compressor that only puts out about 27 CFM at 90 PSI. If it is really a 100 CFM, it must be a monster!



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jm

08-20-2001 17:30:37




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 Re: Re: Quantity of sand needed for blast? in reply to Wow, 100 CFM?, 08-20-2001 10:09:44  
It's an Ingersoll Rand compressor on a trailer with a 3 cylinder diesel engine delivering a real time 100 cfm.



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gary

08-20-2001 06:19:34




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
JM,
We sandblast quite a lot, but not tractors (yet). I would suggest going to a building supply store and getting 00 sandblasting sand. Even when using quality sand, the blasting equipment is hard to maintain. I think trying to save $$$ on sand wiil lead to a lot of aggravation for you. We can buy the sand for about $4.50 for a 100 pound bag. I would imagine you would go through 6 - 10 bags.
Also, please heed the previous advice of not blasting the whole tractor as a unit.
gary

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tony

08-18-2001 09:55:14




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
you could probably do it with only a couple bags, just get an old screen door and make a filter, then scoop up the sand and run it through the screen, if some paint or whatever gets through the screen, it's small enough to go through the sandblaster



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rollo

08-18-2001 05:47:21




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
I did a '48 A and used about 30 bags of play sand. I had to strain it to get out the larger pieces so I could use it in my pressure sandblaster. It was a lot cheaper than sand specifically prepared for one of the machines. I don't know if it matters, but I used sandblasting in combination with oven cleaner for paint removal, and, most of the sandblasting was done to dissambled parts; not the whole tractor.

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Richard

08-17-2001 20:38:52




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
Gman is right. I mostly blasted parts separate from the whole tractor. I do like the results of a blasted surface. But to answer your question, I completely blasted a two bottom plow last winter and went through twelve 50 lbs sacks. Also, you risk worpage blasting sheet metal. Only do cast parts.



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Gman

08-17-2001 19:29:24




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 Re: Quantity of sand needed for blast? in reply to jm, 08-17-2001 18:46:59  
jm---I don't know how much sand you will need to sand blast your tractor,but you will need about fifty pounds of bearings when you get finished sand blasting,the sand will get in every crack and cranny no way to keep it out. Use paint stripper or wire brush the tractor,or disassemble then sand blast each part,but if you sand blast an assemled tractor you will be in trouble.Gman's opinion



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Clooney

08-18-2001 07:28:26




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 Re: Re: Quantity of sand needed for blast? in reply to Gman, 08-17-2001 19:29:24  
Gman, good observation, I just put over $600.00 worth of trans bearings in an A that was sandblasted as a whole tractor by the previous owner.



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Steve ii

08-25-2001 15:51:16




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 Re: Re: Re: Quantity of sand needed for blast? in reply to Clooney , 08-18-2001 07:28:26  
Lucky me read this what you all had said about sand tractor, I was thinking doing this on my JD 44 A tractor way to get way of old paint. but I know other way getting old paint off. thanks.



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