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I really screwed up today!

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Posted June 05, 2016 - 05:16 PM

I got a really nice light put into my blast cabinet and have used it quite a lot in the last week or so on my wife's Gilson project.

Well today I was going to blast a really rusty rim and even though it was "light" inside the cabinet, I still couldn't see because of all the dust.

I decided to connect the shop vac to the vacuum port to expel the dust. This was a very good idea.

When I assembled the cabinet I used a lot of silicone sealant on all the areas that could possibly leak.

With that being said, I know my cabinet was going to be air tight....In fact, so air tight that the vacuum collapsed the cabinet bending the top piece of metal and busting the glass......Now it is really hard to see into the cabinet.


Note to self.....Remove the vent cap in the back of the cabinet next time I try the vacuum trick!

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#2 KennyP OFFLINE  



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Posted June 05, 2016 - 05:30 PM

That must be a good vacuum!

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#3 UncleWillie ONLINE  


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Posted June 05, 2016 - 05:35 PM

A little vacuum can cause big problems. 

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Posted June 05, 2016 - 05:53 PM

Holy cow that sucks eh

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#5 propane1 ONLINE  

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Posted June 05, 2016 - 06:01 PM

Yep, I have days like that. More than I want. I allways do some thing to make myself say, why did I do that !!!!

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#6 glgrumpy OFFLINE  


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Posted June 05, 2016 - 07:02 PM

Wow! Must be strong vac! AND, isn't there a vent along top in back on cabinet?  Not to plug off, but just leave open?? I have one on my homemade, but you have to kinda screen it and block it some so sand doesn't really fly out and just falls before going out.  I would think the vac attach plastic would have broken before bending any metal, weird!  Besides the vac gets clogged in about ten minutes anyway. It is a constant cleaning of that filter when used on a blaster. The dust just sticks to filter like glue filling in all the weaves in the fabric. I tamp on ground or drive and clean all the time, Don't blow it, it damages easy, just tap on drive.

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Posted June 05, 2016 - 07:03 PM

Aw craps.
Sorry to hear it
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#8 tractorskipper OFFLINE  

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Posted June 05, 2016 - 09:46 PM

As the gentleman said, that sucks.  Amazing what negative pressure can do to sheet metal. I've seen air handler return fans collapse 8' x 10' duct work when dampers closed at the wrong time.  Duct looked like a crushed beer can.

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#9 karl OFFLINE  

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Posted June 06, 2016 - 04:41 AM

What kind of noise did it make?


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Posted June 06, 2016 - 06:23 PM

What kind of noise did it make?

Well, the vacuum makes a LOT of noise, but the sound that hurt was the breaking glass!

I know it was only a Nano-second,  but I felt like I was standing there for minutes watching the top of the cabinet bend and see & hear the glass break.

Oh well, I can get more glass, and I think I can hammer out the bent metal and of course more silicone....maybe a LOT of silicone

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