[CJ882]

Can anyone tell me if Bondo will set up in tempratures ranging from 40 degrees to say 25 degrees? I have one small weld i need to cover in my floor board so i can get the inside lined with spray on linner. Its in a barn so the tempratures will be in the above ranges.

Thanks SC

[302 Z28]

Try a test piece first and see how it does. You may have to increase the catalyst ratio to account for the colder temperatures.

In SouthEast Texas in the summer all I have to do is take the cap off the catalyst tube and the filler starts to kick.

Vince

[mitmaks]

you might have it peel off later on

[shine]

warm the metal with a torpedo heater then apply it. it will cure if you keep it warm.
i did some bodywork wed and it was colder than a you better not say here.

[Henry Highrise]

What Shine said. If you cannot warm the barn up then warm the metal and then apply the bondo and keep a little heat on it untill it sets up enough that you can grate it.

[Paintguy]

As above, but just to make it extra clear - make sure you do it exactly as described and warm the metal first.
If you just throw it on cold metal, then apply heat after, you're asking for trouble. You're trying to heat it more 'from the back', if that makes sense.

[CJ882]

Thanks for the responses guys. That makes alot of sense to heat the metal up before the bondo is applied.

Thanks SC

[MICKDADDY]

Originally Posted by CJ882

Can anyone tell me if Bondo will set up in tempratures ranging from 40 degrees to say 25 degrees? I have one small weld i need to cover in my floor board so i can get the inside lined with spray on linner. Its in a barn so the tempratures will be in the above ranges.

Thanks SC

WHEN I BONDO IN THE WINTER TIME A HEATER THAT CONNECTS TO THE TOP OF A PROPANE TANK ALWAYS WORKED WELL FOR ME. GET EVERYTHING SEMI WARM, SPREAD YOUR BONDO TAKING TIME TO GET IT RIGHT, THEN MOVE THE HEATER CLOSER SO THE BONDO WILL "GO OFF".

[BarryK]

For the small area your doing
if heating is a problem, use a hair dryer to preheat the metal and than cure the filler.

If thats not good enough, J Clark uses an electric blanket.
(I still laugh at that one!)

[overspray]

Polyester resin doesn't cure well or at all below 64 degrees F. The metal and air should be above this temp for the bondo to cure. 64F is also going to be on the high side of the hardner ratio (1 1/2 to 3%).
overspray

[BondoKing]

Originally Posted by BarryK

For the small area your doing
if heating is a problem, use a hair dryer to preheat the metal and than cure the filler.

If thats not good enough, J Clark uses an electric blanket.
(I still laugh at that one!)

the electric blanket... ha ha ha hah ha ha....LOL.... Good ole Jim