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Gas build up

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Thunder69 Cave Dweller Thunder 2000-2015 Member since January 2009 Posts: 3,105	Gas build up Mar 12, 2009 20:41:12 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Thunder69 on Mar 12, 2009 20:41:12 GMT -5 I see alot of posts about gas buid-up in barrels and was wondering if anyone has tried things like gas-ex or beano to reduce the gas buid-up ..John
	Take time to make time..Make time to be there...

MikeS
fully equipped rock polisher

Member since January 2009
Posts: 1,081

Gas build up Mar 13, 2009 17:00:38 GMT -5

Quote

Post by MikeS on Mar 13, 2009 17:00:38 GMT -5

one thing I've done in the past that helps a bit is to use very hot water when setting up the tumbler. Asthe water cools, the tumbler is already sealed, so it lowers the pressure inside the tumbler, and the gas doesn't seem to build up as much pressure later...

Woodyrock
driving up their electric bill

Smile!

Member since January 2008
Posts: 2,719

Gas build up Mar 13, 2009 19:02:02 GMT -5

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Post by Woodyrock on Mar 13, 2009 19:02:02 GMT -5

I do a pre grit run with borax, and that seems to help, or I just may not have gassy rocks. I have an old Lapidary Journal (May 1965 pp244) with an article about a big (like three feet diameter by four feet long) exploding from the gas igniting thus blowing the tumbler apart. The rock being tumbled was all pet wood. The explosion was thought to have been caused by the pressure like the ignition of a diesel engine. What ever caused the explosion, it did blow the tumbler apart. This was a commercial company, and they installed pressure reliefs in all of their tumblers after this accident.
Woody

johnjsgems
gets rocks for Christmas

Member since August 2007
Posts: 6,959

Gas build up Mar 13, 2009 19:06:13 GMT -5

Quote

Post by johnjsgems on Mar 13, 2009 19:06:13 GMT -5

You shouldn't have much trouble. The old books always said to "burp" the drums every 3 days or so. I've only had one lid blow off ever. If you see a drum or lid bulge open it up. I think the old guides said to add a little baking soda but I've heard Tums too. I mostly hear it is a problem with glass and unwashed rock with organic debris. I generally use 1/3 less grit than called for and check every three days. If it looks like I need more grit I add a little more. That takes care of burping also.

John at JS Gems

www.jsgemslapidary.com

cpdad
driving up their electric bill

Member since February 2006
Posts: 2,989

Gas build up Mar 14, 2009 17:43:21 GMT -5

Quote

Post by cpdad on Mar 14, 2009 17:43:21 GMT -5

just pay attention to the bottom of your barrel....if it stays flat or protrudes outward a little....burp it.... the bottom of my barrels actually suck towards the lid slightly if all is good.

if you notice any outward movement of the bottom of the barrel....burp immediatly...or get a big surprise ;D.

cleaning the rocks before tumbling helps a ton.....hot water does help a little....as long as the gas build up doesnt over ride the gains of the hot water pressure difference.

as for as your question goes ;D....i have never used anything at all....all i have done is watch the bottom of the barrel...kev.

a good friend will bail you out of jail. a true friend will be sitting beside you, saying" damn that was fun"

johnjsgems gets rocks for Christmas Member since August 2007 Posts: 6,959	Gas build up Mar 14, 2009 22:04:58 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by johnjsgems on Mar 14, 2009 22:04:58 GMT -5 I think the hot water trick is more of a remedy to get a better seal rather than prevent gas buildup. Kev has pretty much nailed it.
	John at JS Gems www.jsgemslapidary.com

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Gas build up

Post by Thunder69 on Mar 12, 2009 20:41:12 GMT -5

Post by MikeS on Mar 13, 2009 17:00:38 GMT -5

Post by Woodyrock on Mar 13, 2009 19:02:02 GMT -5

Post by johnjsgems on Mar 13, 2009 19:06:13 GMT -5

Post by cpdad on Mar 14, 2009 17:43:21 GMT -5

Post by johnjsgems on Mar 14, 2009 22:04:58 GMT -5

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