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Old 01-22-2011, 08:53 PM   #1
azlo
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Default Finally, Cabin sandblaster fix.

As some of you know I have the Harbor Freight sandblaster. Everybody has had problems with the cabin sandblasters. But after messing with it all day, i figured it out!! Let me explain.... this is the type of gun I have.



and black Diamond for media from Northern Tool. I was blasting with the gun upside down to see if it would make a diffrence when I realise that the media wouldnt get sucked. I took the hose off and the media would just sit here (see pic) when the trigger aT FULL blast (and gun upside down).



Media was stuck. Of course this very course media, but I also used fine glass beads and it was doing the same. So i took the end of the gun apart.



Took the ceramic end out.



Inside the gun is this insert.



This insert is part of the air feed passage and it meets with the suction passage where vacuum is created. U see where the allen wrench hits the insert in the gun...



Well the media would get clogged there. For some reason course or fine media would get stuck here. So,,, I took the insert & grinded it to give more passage without loosing vacuum.
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Old 01-22-2011, 08:54 PM   #2
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Default Re: Finally, Cabin sandblaster fix.

This is what the insert looks like after grinding it.





Installed the insert back in,,, and now u see the extra space. (allen wrench pointing at the insert.)



Put everything back together. What a diffrence!! I even lowered the psi to 80. And I even took all restrictions from the media feed hose, ( in other forums it is suggested to plug or restrict the media feed hose so you can prevent clogging or the surging effect.). SO now at full throttle I get a constant stream of media!! This is beautiful man!



This would usually take 40mins. It took 15 at most. I am one happy camper. I might even see if i can improove on this but it works just fine.
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Old 01-22-2011, 09:09 PM   #3
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Default Re: Finally, Cabin sandblaster fix.

sweet thanks for sharing that.

Sometimes guys will mention stuff like that in their reviews on the HF site.
Of course there won't be detailed picts like yours
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Old 01-22-2011, 09:13 PM   #4
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Default Re: Finally, Cabin sandblaster fix.

Man oh man, how I wan't a blasting cabinet!


Thanks for the post!
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Old 01-22-2011, 10:17 PM   #5
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Default Re: Finally, Cabin sandblaster fix.

That's awesome. I have several buckets of walnut shells that I've been unable to use due to clogging. I might give that modification a try. Have you tried it with glass since grinding it?
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Old 01-23-2011, 12:03 AM   #6
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Default Re: Finally, Cabin sandblaster fix.

That's awesome!

My cabinet sits unused after a couple problems I had with it.

1. The light broke inside it. I have power to it but the light won't come on. New bulb doesn't help. Can't figure out how to fix this yet..

2. Suction hose comes off the pipe that runs to the bottom of the cabinet that sucks the media. I hose clamped it and it's still an issue.

3. Barely works when the light and suction hose wasn't a problem.

Guess I'll try this and see about fixing the other problems so I can use it again!
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Old 01-23-2011, 07:40 AM   #7
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Default Re: Finally, Cabin sandblaster fix.

I've only ever used aluminum oxide in mine with very few issues. Only problem I've had with mine was having to use a whole tube of silicone to seal all the leaks, been pretty good since then. I hear it's not as big of an issue with the new design though.
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Old 01-23-2011, 10:29 AM   #8
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Default Re: Finally, Cabin sandblaster fix.

As soon as I get some windows covers from Autozone im gonna stick a vacuum gauge to the gun & see if im loosing any vacuum or can improove it. Love my week ends.
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Old 02-05-2011, 09:23 PM   #9
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Default Re: Finally, Cabin sandblaster fix.

Quote:
Originally Posted by spongerich View Post
Have you tried it with glass since grinding it?
Switched over to glass and it works beautiful.



also tried it on brass



Gonna clear coat it..
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Old 02-06-2011, 01:17 AM   #10
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Default Re: Finally, Cabin sandblaster fix.

awesomeee gotta try this! thanks for sharing!
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Old 02-06-2011, 05:20 AM   #11
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Default Re: Finally, Cabin sandblaster fix.

Good write up..I'm going to get one down the road, and I'll probably use this thread..
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Old 02-06-2011, 12:17 PM   #12
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Default Re: Finally, Cabin sandblaster fix.

Quote:
Originally Posted by azlo View Post
Put everything back together. What a diffrence!! I even lowered the psi to 80. And I even took all restrictions from the media feed hose, ( in other forums it is suggested to plug or restrict the media feed hose so you can prevent clogging or the surging effect.). SO now at full throttle I get a constant stream of media!! This is beautiful man!
Have any links to these other forums? I need to "mod" my HF cabinet, its just not performing like it used to. Im sure i need to start with the mod you did, but would love to know what or how to plug the media feed.
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Old 02-06-2011, 01:00 PM   #13
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Default Re: Finally, Cabin sandblaster fix.

Right on time with this post. I have never had the problem you are speaking of, using the same media you have. Glad you found a fix in case I do run in to it at some point.

My biggest problem is with the siphon tube. I can seem to get it to stay in the media. It always floats or is pulled up to the top and I just suck air. Maybe I need a longer tube or I need to attach it to the bottom of the cabinet. Any ideas?
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Old 02-06-2011, 07:02 PM   #14
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Default Re: Finally, Cabin sandblaster fix.

For the some of u thats asking if this sandblast mod works, well heres a vid.
U tell me if it works.



Love the mods.

This is glass beads by the way.
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Old 02-06-2011, 07:03 PM   #15
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Default Re: Finally, Cabin sandblaster fix.

Quote:
Originally Posted by Kool Coe View Post
Have any links to these other forums? I need to "mod" my HF cabinet, its just not performing like it used to. Im sure i need to start with the mod you did, but would love to know what or how to plug the media feed.
I use a boat plug from HF. Heres a link.

http://www.harborfreight.com/1-inch-...lug-98114.html
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Old 02-07-2011, 10:20 AM   #16
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Default Re: Finally, Cabin sandblaster fix.

Excellent! I received a blast cabinet from Homier Tools as a gift a while back (probably the same thing as the HF one). I used it a few times and wasn't very impressed with it. I'll have to pull it apart this week and check it out.
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Old 04-19-2011, 09:37 AM   #17
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Default Re: Finally, Cabin sandblaster fix.

Azlo, I can't thank you enough!!!!

I got a similar cabinet a while ago but never was able to get it to do much. I'm using walnut shell media to clean up aluminum parts and only one blast would go through. It was pathetic and I was about to junk it. I had taken apart the gun to play with it and even gave the orifice some thought. But your post with the GREAT photos was the trick. I fired up the bench grinder to modify the orifice then gave the blasting cabinet a try. Perfect!

I got the work I needed to do done and now I know that the cabinet is a viable tool for similar work in the future.

Know that you helped someone today.
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Old 04-19-2011, 10:05 AM   #18
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Default Re: Finally, Cabin sandblaster fix.

Azlo thanks, I've had all the same problems for years with my cabinet unit. Clogging,pulsating,weak blasting, always a PITA. Gonna try your remedy, sounds like a good fix to me!!.............thanks again.........
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Old 04-19-2011, 11:55 AM   #19
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Default Re: Finally, Cabin sandblaster fix.

azlo - thanks for your great tip mod. / when blasting, anything to avoid clogs is a "life saver".

Below, is a few links I wanted to share - great BLASTING resources:
Media blasting
http://www.crankshaftcoalition.com/wiki/Media_blasting
Blasting
http://www.hotrodders.com/forum/blasting-190793.html
Soda blasting
http://www.crankshaftcoalition.com/wiki/Soda_blasting

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Old 04-19-2011, 11:58 AM   #20
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Default Re: Finally, Cabin sandblaster fix.

Maybe I'm expecting too much out of my Grizzly 0707 gun. I ordered the TP gun kit to see how that helps. Maybe its just media. Anyone have this gun ?
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