How long does a ceramic sandblaster nozzle last? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-18-2008, 10:15 AM
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How long does a ceramic sandblaster nozzle last?

I borrowed a Harbor Freight pressure blaster from a friend and found that the valve supplying the nozzle is shot. I figured I'd just replace it with this deadman:

http://www.harborfreight.com/cpi/cta...emnumber=92189

Oddly, though, this unit uses some kind of weird ceramic nozzle that I've never seen (has a flange on the back) and Harbor Freight doesn't sell replacements.

Does anyone have a ballpark on how long I could continuously blast 70 grit aluminum oxide out of one of these things before I have to throw it away for want of a replacement nozzle?

Thanks

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Old 06-18-2008, 10:21 AM
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HF does sell the replacements, but you might have to order them. they might not be a shelf item.
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Old 06-18-2008, 10:32 AM
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They said...

8-10 weeks (probably longer.)

If I don't have my truck blasted and out of the garage before than, I'm a dead man.

I can probably use the 2, 2.5, and 3.0 nozzles with my 12cfm @ 90psi compressor (though the 3.0 is pushing it), so I'm hoping someone will tell me those will last long enough to do the cab/doors of my truck. If not, I figure I'll just buy a couple of these valves and give my friend his blaster back with a spare deadman and a couple 3.5 nozzles that he has the air for.

Kyle

Last edited by wyomingclimber; 06-18-2008 at 10:40 AM.
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Old 06-18-2008, 11:15 AM
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they should last a while anyway.
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Old 06-18-2008, 01:17 PM
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No they won't last long at all and are just plain junk! Hate to be so blunt about it but it is a fact and if you use those things with sand they probably will last only a couple of minutes, they are that bad. Go to Northern Tool or Eastwood and get the large ceramic nozzles they have and you will have something you can use. Eastwood has a neat chart to help you match the proper size nozzle to your available air supply, this is very important! HF may be OK for a few things but for sandblasting supplies, especially for nozzles, they are the last place you want to go. Also the size of most of the nozzles that come with that thing are so large that for most home type compressors they may as well be worn out before you even put them on. What size compressor do you plan to use?
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Old 06-18-2008, 02:57 PM
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Thanks for the input, Oldred.

Somehow I missed the inexpensive deadman at Northern Tools.

I'm using two 6cfm @90psi compressors hooked together, shooting alum oxide. I couldn't find the Eastwood chart, but the one at Brut says that a 7/64 tip consumes 10cfm, so I'll get a bag of those and get to work.

Hopefully, this will be an improvement over my little 30lb siphon blaster. I'm only able to do about 1 1/2 sf per hour with that thing...

Kyle
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Old 06-19-2008, 11:55 AM
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You are at the bare minimum for an air supply but if you can get around 10 to 12 CFM you can make it work. I would suggest no larger than the 3/32" nozzle ( 7 CFM I am thinking), which is probably the smallest available, because they will wear out to a larger size fairly quickly and the 3/32" will last a lot longer for you. With the 3/32" nozzle you will need a fine grit abrasive but with a small set-up and a lower air supply this will probably work better anyway since the smaller tip will be MUCH easier on your compressor!
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