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Buying a good sandblaster

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Doug

03-17-2004 18:34:04




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I am looking for advice on who makes a top quality sandblaster. I've had my blasting done custom thus far, but I'd like to know what size machine is the ultimate for whole tractor/equipment blasting. I don't want to spend a huge amount, but I don't want to mess with a little dinky unit that takes days, either. I'd appreciate some advice on what size/capacity of a unit I need.




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Doug

03-21-2004 09:22:04




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 Re: Buying a good sandblaster in reply to Doug, 03-17-2004 18:34:04  
Thank you all for your comments. I know exactly what you mean, having enough air. I intend to tee in a second compressor if my 5hp won't handle it. (By the way, Sam's has 10hp compressors for about 700, but are not cast iron)

Northern hydraulic is showing blasters starting at around 3k and work their way down.



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Unimog

03-19-2004 19:04:55




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 Re: Buying a good sandblaster in reply to Doug, 03-17-2004 18:34:04  
I'm very happy with the hundred pound capacity
Empire blaster. It's big enough to last 30 to 45 minutes and can be rolled around very easy.
A good steady source of air and a top notch
water separator are the most important parts.



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Butch

03-18-2004 09:18:49




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 Re: Buying a good sandblaster in reply to Doug, 03-17-2004 18:34:04  
The capacity of the unit has nothing to do with how fast it will clean other than you have to fill the small ones more often, you air comprerssor capacity and type of blaster you choose will decide how quick you get done. None of the syphon fed guns will blast quickly, at least what I consider to be quick, stay away from them. You need a pressure vessel unit for fast blasting and a large compressor to feed it. Reason being is the nozzle can only be so small and still get the sand through it. Im guessing 1/8" minimum, maybe 5/32 Ive never measured mine. I bought the cheapest pressure vessle blaster I could find, about 40 lb capacity, no wheels no frills for around $50-60. With my shop air compressor (6.5HP 2 stage) it takes about 2 hours to do the average hood due to waiting on the compressor to catch up, giving it a short break now and then and filling the blaster maybe once. With my 125CFM engine driven compressor that same job might take 15 minutes. You dont need 125CFM to run the blaster but mine was cheap ($300) Id guess 50 CFM minimum for continuous blasting, the 125 just idles with it. To sum it up you are better off spending on a compressor, the fanciest blasting outfit made is no faster than your compressor pump and more money spent for the blaster gets you a few bells and wissles that outside of capacity only slightly speed things up.

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Steve C

03-23-2004 09:08:32




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 Re: Re: Buying a good sandblaster in reply to Butch, 03-18-2004 09:18:49  
Butch, thanks. You just saved me a lot of time. I was using a suction blaster but educated myself about pressure blasters after reading your post. After getting one at Northern Tool this last weekend, I was able to do 4 times the work in half the time.

On the bright side, I'm glad I was able to get pretty good at setting up a temporary booth by the time I got the pressure blaster. It really pushes the air and sand everywhere!

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Stan(PA)

03-19-2004 10:45:27




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 Re: Re: Buying a good sandblaster in reply to Butch, 03-18-2004 09:18:49  
I'm thinking about getting one. Does the compresser tank size make a difference?....Thanks, Stan



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Butch

03-19-2004 12:32:27




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 Re: Re: Re: Buying a good sandblaster in reply to Stan(PA), 03-19-2004 10:45:27  
Guess I wasnt very clear about capacity. I suppose if a person had a tank the size of a semi trailer he could start pumping air a few weeks before he wanted to blast and you might be able to get through a day of blasting but in the real world it makes little differance how big your tank is, a 60 will let you blastt a bit longer than a 30 before the air gets too low but then you wait longer for it to pump back up, no freebies here, no magic, you need compressor capacity, CFMs.

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Stan(PA)

03-19-2004 13:15:09




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 Re: Re: Re: Re: Buying a good sandblaster in reply to Butch, 03-19-2004 12:32:27  
Thanks Butch, thats the information I needed.



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CNKS

03-18-2004 18:47:00




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 Re: Re: Buying a good sandblaster in reply to Butch, 03-18-2004 09:18:49  
Absolutely agree. All I have is a small spot blaster that I use for places I can't get my angle grinder or drill brushes into. I have a "7" HP (who knows what the real HP is) similar to yours except it is single stage. The dinky spot blaster makes it run all the time -- only cycles when I stop for a couple of minutes.



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