Hey guys. I used an Epoxy 60 secinds on wood and it came off. What epoxy do you use for the wood? Also, that CA glue i always reading about it here, what kind of glue is it? Acrillic or something? My local DIY shop doesn't have any. As for Epoxy, i only find the 60 seconds, there is a plastic welder which is for plastic only normally as it say on it, and another for metal. Can you post a picture of your epoxy so i can show it to my DIY's guy?

This is the [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN8002]H9 Epoxy[/link] I use . Workks really well and you get a fair amount for the money.

I use Zap CA glues when needed , but do as much building as possible with Elmers wood glue.

If you use wood glue, you might want to give the new gorilla wood glue a try. It drys more clear. I like to use transparent covering and sometimes the other wood glues dry yellow. Can't use CA, makes me not be able to breath.

I only use Great Planes and other well-known brands of 30-minute epoxy such as pictured. You can not use the quickset epoxies on models, the working time is way too quick, that is probably why it won't stick.

You can also use the 12-minute epoxies but I NEVER use anything under that.

These brand epoxies you can only find in R/C hobby stores or online such as Towerhobbies http://www3.towerhobbies.com/cgi-bin...&I=LXK302&P=ML

You can find 30-minute epoxies in hardware stores such as Carr Hardware but they are usually labeled as '2-ton epoxy' and they come in tubes that dispense equal amounts of both the resin and hardener when the plunger is pushed. They work about as well but you don't get as much.

And the CA glues http://www3.towerhobbies.com/cgi-bin...&I=LXPT38&P=ML are CyanoAcrylate that cures instantly, but most have harmful fumes if you don't use in ventilated areas.

I've never heard of 60 second epoxy....... Are you sure it's not 60 minute? The number means how long you have to clamp the parts together (basically) and full strength is achieved much later.

There's 5 minute cure - 2hr dry, 60 minute cure - 8hr dry and a 6 minute too I think.



Oh, there's 30 minute too. Forgot about that one.

Aaah, now i understand your expoxies. Look at mine. Of course that's a plastic welser for 15 minutes, but the one i used for wood is the same shape, just is 60 seconds

If there is such an epoxy that is 60-seconds that will not do on R/C planes. It has to be the 12-minute or 30-minute or 2-ton-epoxy to work. You can use 5-minute epoxy as well but I do not like them, not enough work time for me.

Ok, i think i'm going for a trip in my local DIY shop

I think the big thing with the epoxies, is that the longer you have to work with the epoxy (5 min, 12 min. etc.) the longer it will have to permeate the pores in the wood, which increases adhesion. When you are fuelproofing a firewall, for instance, you need to use a slow epoxy that will take it's time and work itself into the wood and form a good bond. Otherwise, it will fairly easily peel off.
Good luck,
Curtis

Yes yes, i see now. I think i must make a credit card and order plenty stuff for planes

Monk would have been proud to slove this mystery.

Could you make me one of those credit cards too

It seems like your local hobby shop is not carrying the correct equipment. I've seen a couple other posts of yours where you had problems getting some equipment/accessories. At this point, It maybe worth while to invest some money and order some things online and pay for the shipping (even if you have to do an international order). Make a comprehensive list of only the stuff you can't get locally.....apparently epoxy, the keystone of model flying, is one of them. Order a large amount (large bottles) that will last you. Order both slow and fast drying ones because somethings just don't need 30minutes to cure (5 minute works well in these cases).

He didn't say "hobby shop", he said DIY store which would probably be like our Home Depot or Lowes.

There are 60 second epoxies available http://www.royalenfieldusa.com/epoxy...nd-p-6690.html but I wouldn't use one on an R/C project.

I don't use any epoxy faster than 30 minutes. I like the longer working time and better strength. I can wait. For big jobs I use West System - like "8 Hr" epoxy, I guess. I've also noticed the longer the set time the longer the shelf life.

30 Minute - about 10 minutes of working time . . . less if additives like wood flour or colloidal silica are used.


Finishing Resin - love this for fiberglassing & fuelproofing


West System (one squirt from each pump)


CA - cyanoacrylate (or something like that) - aka "Crazy Glue".

In your first two pictures, there are "Part A" and "Part B". What does this mean? You must use both to work propebly?

All epoxies are two part systems; you must mix two parts together, or it will never bond or set. That is the nature of epoxy. You use equal parts of the gel from each tube, mix together, and use it.

I use 5 min epoxy for emergencies at the field. It has worked well for me for some smaller repairs, and you can get home and use the 30 min to reinforce if need be.

Maybe the OP didn't understand the mixing part, and that's why the 60second epoxy didn't work?

How much time does the CA does untill it finish?

ca can be from a few seconds to about 5 minutes. it depends on conditions. if you wick it into tight fitting gap between two sheets of bals it is very fast but if you try to glue a fuel tube to a piece of balsa it may take a few minutes. thier is a thing known as ca kicker which will make the ca glue set up almost instantly. I would not buy large bottles of epoxy. after you break the seal on the epoxy it will start to go bad. the stuff I use usually never lasts more then a year and if it is kept in a hot area then the epoxy goes bad and a quicker rate. Wood glue is by far the best thing to use for building a model because it has a good amount of time before it sets so you can positions parts correctly and it binds into the wood extremely strong. ca vapors can be nasty and I hate when it gets on clothes or hands. the clothes and skin instantly harden, the clothes are ruined and the glue has to be worn off the skin. epoxy takes an extended period of time to be cleaned off your hands. usually you have to wait for it to finish its reactions before its residues become easy to remove from the hands. Epoxy has to be mixed very well or it takes forever to harden

I see. I had once that cyano-acrulic (CA i think, right?) glue for glueing my tires on my cars and is very very quick, about 2-3 seconds it was finished, and i know that horrible smell and that thing my fingers happened when i touch CA, my fingers turn into pink or something.