Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > General Electric Discussions
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

General Electric Discussions Talk about topics related to e-powered RC flying

Thank you for your support (hide ads)
Reply
 
Thread Tools Display Modes
Old 12-19-2012, 04:49 PM   #1
BroncoSquid
Workin on it...
 
BroncoSquid's Avatar
 
Join Date: Jan 2012
Location: San Diego
Posts: 302
Thanked 9 Times in 9 Posts
Club: Bill G fan club!
iTrader: (0)
Friends: (4)
Default Epoxy storage?

I have some 5min epoxy I bought 6 months ago. Used it twice, consuming about 10% of it. Slowly the resin in the bottle has started to harden and is all clumpy. The hardener is fine. Is this usual? Storage is on the workbench in the garage. Temp range 85-45 deg. Is there a storage trick of should I buy smaller bottles every 4 months?

I'm either going to get good at flying em, or get good at fixin em!
BroncoSquid is offline  
  Reply With Quote
Old 12-19-2012, 05:36 PM   #2
gyrocptr
Member
 
Join Date: Jan 2007
Location: Neenah Wisconsin
Posts: 232
Thanked 44 Times in 40 Posts
iTrader: (0)
Friends: (0)
Default

Put it in a bath of hot water for a few minutes, and it will usually de-crystallize.
gyrocptr is offline  
  Reply With Quote
Old 12-19-2012, 08:51 PM   #3
slipstick
Super Contributor
 
Join Date: Oct 2005
Location: N.Staffs, UK
Posts: 2,350
Thanked 197 Times in 191 Posts
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (1)
Default

Epoxy does that a lot. I just zap it in the microwave for a few seconds (20-30 sec....DON'T overdo it ).

Steve
slipstick is offline  
  Reply With Quote
Old 12-19-2012, 10:02 PM   #4
road king 97
old hat
 
road king 97's Avatar
 
Join Date: Nov 2010
Location: joliet il
Posts: 2,602
Thanked 186 Times in 182 Posts
Club: joliet rc club rt 66
Awards Showcase

Scratchbuilders Award  Outstanding Contributor Award 
iTrader: (0)
Friends: (14)
Default

LOL i have two bottels of 5 min stuff sitting on my bench for 2 years now with no lids at all and used the last of it 2 days ago. joe
road king 97 is offline  
  Reply With Quote
Old 12-19-2012, 10:18 PM   #5
oem flyer
Member
 
Join Date: Feb 2009
Location: Rock Falls, Illinois
Posts: 116
Thanked 8 Times in 7 Posts
iTrader: (0)
Friends: (0)
Default

I believe that exposure to air or at least moist air may be the cause. I had two 4.5 oz bottles do that. One was 5min. the other was 30. I now buy my epoxy in the tandem syringe containers. Once you get the initial air out of them their is nothing but epoxy in the tubes. Haven't had a problem since.
oem flyer is offline  
  Reply With Quote
Old 12-20-2012, 03:38 PM   #6
BroncoSquid
Workin on it...
 
BroncoSquid's Avatar
 
Join Date: Jan 2012
Location: San Diego
Posts: 302
Thanked 9 Times in 9 Posts
Club: Bill G fan club!
iTrader: (0)
Friends: (4)
Default

Thank you for all the replies. I will try heating it up a little. Nothing to loose.

I'm either going to get good at flying em, or get good at fixin em!
BroncoSquid is offline  
  Reply With Quote
Old 12-20-2012, 03:41 PM   #7
Rodneh
Member
 
Join Date: Oct 2005
Location: Florida, USA
Posts: 715
Thanked 69 Times in 68 Posts
Club: Moonport Modelers
iTrader: (0)
Friends: (0)
Default

I have had epoxy stay usable for well over 5 years and part of that time in a garage that got very hot over the summers. As long as you keep the two components separated, you should not have any problem. Exposure to air has never been a problem with any of mine. As mentioned above, if any of it does crystallise, just immerse it in hot water for a bit. I'd steer away from any microwave as, if you over do it, you can wind up with an almost unclean-able mess.
Rodneh is offline  
  Reply With Quote
Old 12-20-2012, 03:55 PM   #8
slipstick
Super Contributor
 
Join Date: Oct 2005
Location: N.Staffs, UK
Posts: 2,350
Thanked 197 Times in 191 Posts
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (1)
Default

Microwave was recommended to me by an adhesives chemist who worked for Ciba-Geigy (manufacturers of Araldite) at the time. But you're right it's only the warmth it needs so if you're feeling nervous hot water will work perfectly well....not quite so rapidly though .

Steve
slipstick is offline  
  Reply With Quote
Old 12-20-2012, 04:29 PM   #9
road king 97
old hat
 
road king 97's Avatar
 
Join Date: Nov 2010
Location: joliet il
Posts: 2,602
Thanked 186 Times in 182 Posts
Club: joliet rc club rt 66
Awards Showcase

Scratchbuilders Award  Outstanding Contributor Award 
iTrader: (0)
Friends: (14)
Default

Originally Posted by BroncoSquid View Post
Thank you for all the replies. I will try heating it up a little. Nothing to loose.
When putting fiberglass cloth on the middle section of a wing i smear 15 minute epoxy over it then hit it with my covering hot air gun and the epoxy turns to water . I then take a old credit card and wipe the excess off . After you hit it with the gun its drying time goes from 15 min to around 4 . I found out its nice to do it this way because it gets a great bond by soaking into the wood a little and filling the weave. Happy Holidays guys / joe


Attached Thumbnails
Click image for larger version

Name:	merryxmaskotula.jpg
Views:	47
Size:	139.3 KB
ID:	164953
Click image for larger version

Name:	270058_314909001955894_1699379702_n.jpg
Views:	47
Size:	92.7 KB
ID:	164954
road king 97 is offline  
  Reply With Quote
Old 12-20-2012, 11:33 PM   #10
kyleservicetech
Dennis V
 
kyleservicetech's Avatar
 
Join Date: Apr 2008
Location: Wisconsin, USA
Posts: 7,860
Thanked 669 Times in 652 Posts
Club: www.racinercclub.com (I'm the newsletter editor)
Awards Showcase

Outstanding Contributor Award  3kW  2kW  100mph Speed Demon 
iTrader: (1)
Friends: (20)
Default

Originally Posted by Rodneh View Post
I'd steer away from any microwave as, if you over do it, you can wind up with an almost unclean-able mess.
Yeah, years ago a fellow worker made the mistake of putting some circuit board coating type epoxy resin and hardener into two foam drinking cups, and went home.

That stuff dissolved the foam, and went all over his desk, and onto the floor. They had to replace the desk. (FYI after quite a few more boneheaded things like this, the company replaced that technician!)

DennyV
Retired and the days are just too short, busier than ever!
kyleservicetech is online now  
  Reply With Quote
Old 12-21-2012, 03:24 PM   #11
BroncoSquid
Workin on it...
 
BroncoSquid's Avatar
 
Join Date: Jan 2012
Location: San Diego
Posts: 302
Thanked 9 Times in 9 Posts
Club: Bill G fan club!
iTrader: (0)
Friends: (4)
Default

Originally Posted by road king 97 View Post
When putting fiberglass cloth on the middle section of a wing i smear 15 minute epoxy over it then hit it with my covering hot air gun and the epoxy turns to water . I then take a old credit card and wipe the excess off . After you hit it with the gun its drying time goes from 15 min to around 4 . I found out its nice to do it this way because it gets a great bond by soaking into the wood a little and filling the weave. Happy Holidays guys / joe
That is a great tip, thanks, I will have to remember that one. Crap... now I have to go out and get a heat gun.

I'm either going to get good at flying em, or get good at fixin em!
BroncoSquid is offline  
  Reply With Quote
Old 12-21-2012, 03:27 PM   #12
BroncoSquid
Workin on it...
 
BroncoSquid's Avatar
 
Join Date: Jan 2012
Location: San Diego
Posts: 302
Thanked 9 Times in 9 Posts
Club: Bill G fan club!
iTrader: (0)
Friends: (4)
Default

Originally Posted by kyleservicetech View Post
Yeah, years ago a fellow worker made the mistake of putting some circuit board coating type epoxy resin and hardener into two foam drinking cups, and went home.
I learned that one trying to use Testors plastic model cement on a foam glider 30 years ago.

I'm either going to get good at flying em, or get good at fixin em!
BroncoSquid is offline  
  Reply With Quote
Old 12-21-2012, 05:32 PM   #13
road king 97
old hat
 
road king 97's Avatar
 
Join Date: Nov 2010
Location: joliet il
Posts: 2,602
Thanked 186 Times in 182 Posts
Club: joliet rc club rt 66
Awards Showcase

Scratchbuilders Award  Outstanding Contributor Award 
iTrader: (0)
Friends: (14)
Default

Originally Posted by BroncoSquid View Post
That is a great tip, thanks, I will have to remember that one. Crap... now I have to go out and get a heat gun.
Your welcome ,you can also dabb it with foam or tissue to get most the the excess off and to keep it as light as posible but still strong. A heat gun is always great when covering a plane or fixing the covering on one. So to a neat job without and wrinkles i use a trim iron for tight spots a reg iron for the edges and my heat gun to shrink all the middle of my parts . You can also heat up the covering while you pull it around round wing tips for a smooth finish but i use some gloves to pull with so i dont burn my fingers all up ,or two pieces of balsa glued to some plyers to pull with. joe
road king 97 is offline  
  Reply With Quote
Old 12-21-2012, 06:42 PM   #14
kyleservicetech
Dennis V
 
kyleservicetech's Avatar
 
Join Date: Apr 2008
Location: Wisconsin, USA
Posts: 7,860
Thanked 669 Times in 652 Posts
Club: www.racinercclub.com (I'm the newsletter editor)
Awards Showcase

Outstanding Contributor Award  3kW  2kW  100mph Speed Demon 
iTrader: (1)
Friends: (20)
Default

Originally Posted by BroncoSquid View Post
That is a great tip, thanks, I will have to remember that one. Crap... now I have to go out and get a heat gun.
Yeah, I've done that for decades, it works very well. You might want to consider proper ventilation doing that though, don't think epoxy fumes are really good for your lungs.

Also, don't try this with 5 minute epoxy, it sets real fast under heat. (Don't ask)

DennyV
Retired and the days are just too short, busier than ever!
kyleservicetech is online now  
  Reply With Quote
Old 12-26-2012, 03:25 PM   #15
BroncoSquid
Workin on it...
 
BroncoSquid's Avatar
 
Join Date: Jan 2012
Location: San Diego
Posts: 302
Thanked 9 Times in 9 Posts
Club: Bill G fan club!
iTrader: (0)
Friends: (4)
Default

The hot water bath worked excellent! Just used hot tap water. Mixed better too. Saved me from throwing away perfectly good epoxy. Thanks again.

I'm either going to get good at flying em, or get good at fixin em!
BroncoSquid is offline  
  Reply With Quote
Old 12-27-2012, 01:26 AM   #16
xuzme720
c'mere Monkey
 
xuzme720's Avatar
 
Join Date: Apr 2007
Location: Just North of Houston.Heard of Dayton? I didn't think so...
Posts: 2,960
Thanked 55 Times in 52 Posts
Send a message via Yahoo to xuzme720
iTrader: (3)
Friends: (8)
Default

Originally Posted by BroncoSquid View Post
I learned that one trying to use Testors plastic model cement on a foam glider 30 years ago.
I did the same thing, but it was the foam part on a model of one of those Battlestar Galactica's fighters...I can't even remember what they were called now.

Just call me X! (or Gary works, too.)
Another signature landing! Somebody help me find all the pieces...

xuzme720 is offline  
  Reply With Quote
Old 12-29-2012, 02:19 PM   #17
dgholmes59
Member
 
Join Date: Jan 2012
Location: Stephenville, Tx
Posts: 47
Thanked 5 Times in 5 Posts
iTrader: (0)
Friends: (1)
Default

The resin is the problem in my experience. It happens to opened and unopened containers. Not sure why. I pulled out a brand new unopened package of Great Planes 30-minute epoxy from my closet this week and the resin had hardened a little. Looks like honey that has crystalized. Unless you want it to get real hot, don't microwave it too long. a few seconds is all it usually takes to liquify it again.
dgholmes59 is offline  
  Reply With Quote
Old 12-29-2012, 06:25 PM   #18
stevecooper
Super Contributor
 
stevecooper's Avatar
 
Join Date: Aug 2006
Location: Shadeville Fl,
Posts: 6,994
View stevecooper's Gallery86
Thanked 513 Times in 496 Posts
Club: Mullet Mauroders
Awards Showcase

WAA-08 Pilot  Outstanding Contributor Award 
iTrader: (2)
Friends: (88)
Default

I build sailboats (40+years) and use it by the 55 gal drum,, resin has an infinite shelf life and the slow and fast hardener have a shelf life of a minimum of 1 year in a closed container., hope this helps, bubsteve


Attached Thumbnails
Click image for larger version

Name:	252428_227417727284745_100000495592743_930465_8243657_n.jpg
Views:	34
Size:	121.6 KB
ID:	165238 my own boat,, thre years to build

Monkey Minion'air
stevecooper is offline  
  Reply With Quote
Old 12-30-2012, 03:51 AM   #19
FlyWheel
Ochroma Lagopus Tekton
 
FlyWheel's Avatar
 
Join Date: Jul 2007
Location: Blackstock, South Carolina
Posts: 2,530
View FlyWheel's Gallery5
Thanked 70 Times in 68 Posts
Club: Lancaster County Fliers
iTrader: (0)
Friends: (3)
Default

Originally Posted by road king 97 View Post
When putting fiberglass cloth on the middle section of a wing i smear 15 minute epoxy over it then hit it with my covering hot air gun and the epoxy turns to water . I then take a old credit card and wipe the excess off . After you hit it with the gun its drying time goes from 15 min to around 4 . I found out its nice to do it this way because it gets a great bond by soaking into the wood a little and filling the weave. Happy Holidays guys / joe
Nice! I'll have to remember that one.

I have never had any trouble with the resin hardening on it's own, so long as the hardener doesn't touch it - and I mean not even the vapors. What I do is dispence the resin first, seal it's bottle then dispense the hardener and mix it. This insures the resin stays completely uncontaminated.

Originally Posted by xuzme720 View Post
I did the same thing, but it was the foam part on a model of one of those Battlestar Galactica's fighters...I can't even remember what they were called now.
Vipers (Colonial) or Raiders (Cylon)

"Give a man a plane and he'll fly for a day.
Teach a man to build a plane and he'll fly for a lifetime"
FlyWheel is offline  
  Reply With Quote
Reply

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > General Electric Discussions

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
storage mode touche Batteries & Chargers 10 03-04-2012 02:24 AM
Lipo storage icarus46 Batteries & Chargers 4 01-09-2012 04:28 PM
Placing batteries in storage mode KeninAZ Batteries & Chargers 15 12-30-2011 08:38 PM
NiCd Battery storage RightFly Batteries & Chargers 9 12-24-2011 06:22 PM
Batt Storage FlyingBrick50 General Electric Discussions 10 11-18-2011 02:18 PM


All times are GMT +1. The time now is 06:47 AM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation



Page generated in 0.40000 seconds with 62 queries