24hourcampfire.com
24hourcampfire.com
Previous Thread
Next Thread
Print Thread
Hop To
Joined: Feb 2002
Posts: 360
Campfire Member
OP Offline
Campfire Member
Joined: Feb 2002
Posts: 360
Is there any way to extend the life of the hardener? A few
years ago, ProBed2000 hardener went bad on me. Last year, the
Devcon hardener went bad on me. They were stored in a cool
basement. I do not use a lot at a time, but it seems every
year to 2 years I am bedding a stock and hardener has gone
bad while the other is still fine.

Would it hurt/help to put the stuff in a freezer?

BP-B2

Joined: May 2005
Posts: 16,554
Campfire Ranger
Offline
Campfire Ranger
Joined: May 2005
Posts: 16,554
I think two years is a reasonable shelf life. I've had resin and hardener work quite a bit longer than that but I wouldn't trust it for anything where I was relying on its structural strength.

Hardener particularly can crystallize when cooled much below cool room temperature, at what point depends on the components. Can be un-crystallized with gentle warming, like a hot water bath. Freezing would definitely extend the shelf life but then you have the crystallizing problem.

Actually the mixed epoxy can be almost stopped dead in its tracks by freezing. For fun I "stuck" some left over mixed Acra Glas Gel in the freezer. Worked fine a few months later though I lost some pot life while it thawed.


The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh

Which explains a lot.

Moderated by  RickBin 

Link Copied to Clipboard
YB23

Who's Online Now
665 members (17CalFan, 22magnut, 10gaugemag, 1beaver_shooter, 1minute, 10ring1, 74 invisible), 2,761 guests, and 1,305 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums81
Topics1,187,644
Posts18,399,051
Members73,817
Most Online11,491
Jul 7th, 2023


 







Fish & Game Departments | Solunar Tables | Mission Statement | Privacy Policy | Contact Us | DMCA
Hunting | Fishing | Camping | Backpacking | Reloading | Campfire Forums | Gear Shop
Copyright © 2000-2024 24hourcampfire.com, Inc. All Rights Reserved.
Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.3.33 Page Time: 0.092s Queries: 14 (0.004s) Memory: 0.7904 MB (Peak: 0.8177 MB) Data Comp: Zlib Server Time: 2024-03-28 17:44:29 UTC
Valid HTML 5 and Valid CSS