HOT epoxy?

[Tommy-D]

> I had a ferrule job recently where I felt epoxy would be a better choice than wood glue,so I went and bought a fresh package of typical Devcon 5 min.

I swear the mixing cup I used was warm to the touch while stirring it up,and was gummy/partially cured within 2 minutes of me using what I needed for the job. It was totally cured within 10 minutes,though I let it sit another 45 min.

Anyone else ever had that happen? Tommy D.

 

[cueman]

I mix the five minute on a card or other flat surface. I fill the ferrule up, coat the tenon and wait about two minutes, at this point it is starting to thicken. I screw the ferrule on down and it is gummy within another minute or so. If you were to go 60% hardener and 40% resin it will kick off about twice as fast. It is normally roughly three minutes to gummy and five minutes to unmovable.

 

[akaminski]

> I had a ferrule job recently where I felt epoxy would be a better choice than wood glue,so I went and bought a fresh package of typical Devcon 5 min.

I swear the mixing cup I used was warm to the touch while stirring it up,and was gummy/partially cured within 2 minutes of me using what I needed for the job. It was totally cured within 10 minutes,though I let it sit another 45 min.

Anyone else ever had that happen? Tommy D.

It is perfectly normal to get hot to the touch.....it is just the chemical reaction going on in the quick setting epoxy.....it doesnt normally happen that bad with the long cure stuff.....but only really the quick cure stuff

 

[pescadoman]

It is perfectly normal to get hot to the touch.....it is just the chemical reaction going on in the quick setting epoxy.....it doesnt normally happen that bad with the long cure stuff.....but only really the quick cure stuff

The more you mix the hotter it gets and faster it will kick. It depends on the temperature it is mixed in as well and the temperature of the material that it is applied to.


On boats we have only used the fast hardener with West. You have to work fast when doing bigger projects with that hardener. We recoated a deck once in 80 plus degrees and it started kicking...and I mean KICKING in about 5 mins. Around 10 mins it was smoking and unusable. When we mix too much it always starts smoking.....

 

[Monk Slayer]

Putting it into a cup helps retain the heat, versus spreading it out on a piece of cardboard, so it would have more surface area to radiate heat away, allowing for a longer usable time. I've done my fair share of fiberglass work while I was in the Navy.