Full Version: Opening Aerosal Can
From: Carl (CSEWELL) [#13]
11 Aug 2006
To: Engravin' Dave (DATAKES) [#12] 11 Aug 2006
I've had problems with Cermark also. Cans that I thought I'd never get another spray out of, I shook them for several minutes and cleaned the top of the can where the nozzles attaches and I was able to get them working again.
May not help for you, but it has worked for me.
From: laserman (MIKEMAC) [#14]
11 Aug 2006
To: Engravin' Dave (DATAKES) [#13] 11 Aug 2006
David,
Once the can's clog theres not much you can do. I would like to caution everyone about shaking the cans a lot! We had one of the cans puncture and cermark was every ware. The older cans are a different aluminum and shaking them a lot can cause the can to puncture.
What we do with a dead can is to use a pair of dikes for wire cutting and pry up on the seal around the edge just until you start to hear a hiss. Then let it sit over night. then pry up a little more once all of the propellant is gone you can easily remove the top and the stopper.
Then we pour it into our Preval spray bottle DO NOT SHAKE OR COVER THE BOTTLE. leave the bottle opened for another 24 hr period then place the sprayer on try not to shake it as there is some additive that makes the cerdec in the cans spray. It is a lot like shaking a can of soda and then opening it.
We have done this with several cans and as long as you let the propellant slowly leak out you should be fine. Actually if you think the can is empty you may want to do the same thing you will be surprised at how much is still in the can.
EDITED: 11 Aug 2006 by MIKEMAC
From: JHayes55 [#15]
11 Aug 2006
To: ALL
After I had a can blow up in the cabinet one weekend and over everything in there I never bought another one! Concentrate and Preval sprayer kit works very well. Since I do a lot of stainless for a couple large shops I invested in a small air brush compressor and the cheapest air brush going.
Good quality airbrushes are too fine for the CerMark to spray well - cheap ones have larger openings and can handle the larger particles that are in CerMark. IMHO - best solution to the Cermark problem.
I still keep Preval sprayer with CerMark in the jar for small jobs when I do not want to set up the compressor.
From: Carl (CSEWELL) [#16]
11 Aug 2006
To: laserman (MIKEMAC) [#14] 24 Aug 2006
Are you saying (suggesting?) that over-shaking caused the can to puncture (explode)? Maybe the ball put a hole in the can? I find that extremely hard to believe.
From: Engravin' Dave (DATAKES) [#17]
11 Aug 2006
To: Carl (CSEWELL) [#16] 11 Aug 2006
Carl,
If the puncturing ball were an issue, I'm sure we would have heard about a recall long before now.
I did do the long term shake, which produced a little more spray than I have been getting, but still glogged within seconds.
I pryed the top of the can away until I heard a hiss. The can was hissing away in my photo-resist washout basin when I left, so in the morning I should have a pressureless can.
David Takes
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EDITED: 7 Aug 2010 by DATAKES
From: JHayes55 [#18]
12 Aug 2006
To: Carl (CSEWELL) [#16] 12 Aug 2006
Carl
The old style can would become dented where the ball struck the inside of the can - the can became thinner and thinner evertime you shook it up. The can I had explode let go where the ball had made dents in the can. I have never used the "new improved can" and have no experience with it. They stopped making the old can for a while before the new one came out - I would guess that might have been part of the reason.
EDITED: 12 Aug 2006 by JHAYES55
From: Engravin' Dave (DATAKES) [#19]
12 Aug 2006
To: Carl (CSEWELL) [#16] 12 Aug 2006
Well, it worked. I had a pressureless can in the morning, pulled the rest of the top off, and now have some useable material.
I appreciate all of the approaches that everyone shared in this thread. It is amazing what one can learn from the diverse experience and practices of others. I guess that what makes this place so valuable to me.
From: laserman (MIKEMAC) [#20]
24 Aug 2006
To: Carl (CSEWELL) [#16] 24 Aug 2006
Carl,
Sorry for the delay in responding I was out of the office for the last ten day's.
Joe hit it right on the ball dented the older cans and that is where the puncture happened. They used a larger ball and thinner cans in the older model cans and that could have been the reason for the change.