Epoxy nightmare! - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Construction Ideas, Hints and Tips For all the builders out there. Ask questions, make suggestions, trade tips.

Closed Thread
Thread Tools Display Modes
Old 06-23-2008, 09:06 AM   #11
RCC Supreme Contributor
I am: eric q
Join Date: Jun 2005
Location: Crawford Lake, Ontario
Radio of choice:
# of RCs: too

Feedback: 9 / 100%
Posts: 7,159
Total Props: 26
Re: Epoxy nightmare!

       Remove this ad - become a site supporter!
On second thought I would suggest you scrape off all the epoxy and use polyurethane adhesive, the second part is moisture from the air and it's as strong as bricks.

If you want to use it on something non-porous mix it with two drops of water in a paper cup.
desiderantes meliorem patriam
To err is human, to moo is bovine
moo is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 06-23-2008, 09:15 PM   #12
IAR 80
RCC Contributor
IAR 80's Avatar
I am: Ovidiu M.
Join Date: Aug 2004
Location: Brampton, Ontario

Feedback: 1 / 100%
Posts: 354
Total Props: 0
Re: Epoxy nightmare!

As all advised you, use the propper mix ratio.Happen some times( to me, at least) to drop more hardener than needed.The more above the recomended amount, the least chance it will harden.Will be gooey even weeks later.
Remove mecanically ( rasor blade, hobby knife, tooth picks,....) as much as you can, and besides alcohol, I had good results with acetone.( unless the parts are plastic, which case acetone will atack it).

IAR 80 is offline   Quick reply to this message.
Old 06-26-2008, 12:35 AM   #13
I am: Boolean21
Join Date: Sep 2002
Location: Singapore

Feedback: 0 / 0%
Posts: 38,228
Total Props: 56
Re: Epoxy nightmare!

As others have suggested proper mix of epoxies is very very important for it to cure properly, adding more hardener or resin will not help as you have already experienced it. As Dennis said go to industrial grade epoxies, like West systems or Aeropoxy, these are good ones and mixing ratios are different then 50/50!. I learned it very hard way myself recently but i recovered it fast enough too.

Also don't think adding globs of epoxy will help, in reality it will work against what you want it to do, just enough use is all you need.
PurgatorY is offline   Quick reply to this message.
Old 06-26-2008, 06:59 AM   #14
Ken Currell
I am: Ken Currell
Join Date: Jun 2004
Location: Whitby, Ontario
Radio of choice:
Multiplex Royal Evo
# of RCs: 30+

Feedback: 3 / 100%
Posts: 3,688
Total Props: 0
Re: Epoxy nightmare!

All these products come with instructions.
Just mix as the manufacturer recommends.

Try a small test batch first.
This will tell you if it will be suitable for your particular application.
If there is a problem with it not setting it will show up before you apply it to your model.

The amount of epoxy you apply has no significant bearing on how hard or fast it sets.

If you need to apply a large amount the addition of fiberglass or carbon fiber etc. will strengthen the affected area. The epoxy will also add weight.
Ken Currell is offline   Quick reply to this message.
Old 06-26-2008, 07:14 AM   #15
RCC Junior Contributor
Lakota's Avatar
I am: Don M
Join Date: Sep 2005
Location: London, ON

Feedback: 0 / 0%
Posts: 110
Total Props: 0
Re: Epoxy nightmare!

The other route to this repair is peeling back the covering and carefully cutting out the broken area with the help of a little ca debonder. Get a new piece of the appropriate thickness plywood and a piece of popular of right size for the landing gear block below. Cut out identical replacement pieces on scroll saw and ca it all back together using nylon wing bolts and and blind nuts. Good as new, and I am told the nylon bolts will break before the wooden structure in future, making future repairs just turning out the nylon studs and replacing with new nylon wing bolts, easy field repair. This is my first try at it from a couple weeks ago. The old broken structure sitting on wing mount was just ca'd together to make a template for the new. It is happily bouncing down the field again.

Edit - After thinking about it, guess I reassembled it with 30minute epoxy as I did clamp it and leave it for a couple days. Pretty bad when you are doing so many repairs it is hard to keep straight in your mind just how you did it.

-Just a trick I must use to get it right, always squirt the puddle of hardener first, it is thicker and the puddle will sit higher than the puddle of resin. Anytime I squirt the resin first, then make an equal size puddle of hardener, by the time I grab a mixing stick the hardener will have started to settle and I will have noticeably unequal amount
Attached Thumbnails
Click image for larger version

Name:	DSC01014.jpg
Views:	100
Size:	79.4 KB
ID:	34878  

Last edited by Lakota; 06-26-2008 at 07:32 AM.
Lakota is offline   Quick reply to this message.
Old 03-26-2009, 07:54 PM   #16
gerry clace
RCC Junior Contributor
I am: gerry c.
Join Date: Aug 2003
Location: Sioux Lookout Ontario

Feedback: 2 / 100%
Posts: 112
Total Props: 1
Thumbs up Re: Epoxy nightmare!

Got a home Hardware close by ? Try a product called Gorilla Glue. this stuff is fantastic. Follow the directions on the bottle and i think you will be amazed! Have not tried it on fiberglass products but it works on just about anything else.Gerry
gerry clace is offline   Quick reply to this message.
Old 03-27-2009, 08:19 AM   #17
I am: Cedric V.
Join Date: Oct 2004
Location: St. Marys, Ontario N4X 1C1

Feedback: 11 / 100%
Posts: 1,250
Total Props: 1
Re: Epoxy nightmare!

I seem to remember seeing 'WEST SYSTEMS' stuff at LeeValley when I was in there. Great store, kind of like Aladdin's cave!

Last edited by Spitball; 03-27-2009 at 08:21 AM.
Spitball is offline   Quick reply to this message.
Closed Thread

Quick Reply

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
vBulletin Message

Thread Tools
Display Modes

Forum Jump

All times are GMT -5. The time now is 06:28 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.