Living in the south we have a wee bit of humidity. Its a chilly rainy day and i turn in the garage where the wife is also doing laundry making the humidity even higher. It is taking 20 to 30 minutes before layers and the thicker i go the longer it seems to take to stop feeling tacky.
My question is this. Would using a heat gun turned all the way down to 500 degrees and kept kept a safe distance away from the blank have any negative effects on the CA?
I use a heatgun for every time I make a CA finish even in Summer, why...? because I want to make sure all those layers of CA are dry and hard for the wet sanding, only because each layer feels dry before you apply the next layer, the thicker you go, the harder is for the bottom layer to set hard and this is the very reason some folks instead of using the heatgun/airdryer sand their blanks the next day.
The lower the temps the longet the CA will take to dry even with accelerator so and in your case, using the heatgun between coats can only be a benefit and sure a quicker way to apply multiple coats in one seating, however, using a heatgun or hairdryer the risk of burning is very real so, the best way to prevent that to happen is to do the following;
Use the hottest setting and start away from the blank, I suggest 2 or 3 feet, then use the available hand to put in front of the heating tool at a safe distance, bring your hand closer until you feel the heat but you can stand keeping your hand there at that distance, that is the distance you need to keep from the blank you are finishing with the lather turned on, obviously.
The heat gun should not stay in the same place so it works wonders if you swing the heat source left to light (or right to left) to cover the lenght of the blanks surface, about 1 minute is all you need.
This is what I do and what I suggest to those learning from me, as a step they repeat everytime.
Hope this helps.
Cheers
George
