Thanks, I can't remember where I heard/read about it the first time. I've toyed with the idea of building a heat/temperature controlled trowelI found it completely necessary. I know that I saw it on Wayne Hicks' build log. Here is where I have written about it and cited web pages:
I have used it. Kept the heat gun hung on a rope over a hook on the ceiling, for every pass of the 6" drywall knife, I would warm the back of the blade with the gun, make the pass spreading the dry micro. If I forgot to warm it, instead of spreading the micro and forcing it into the fiberglass surface, it would stick to the dry wall knife better and roll up behind the pass. The heat gun kept the knife hot enough that the resin would be just a but slick and would spread nicely.
How 'bout an old fashioned clothes iron with modifications to close the holes that are usually in the sole plate?I've thought of that, or taking a surplus heated plate couple a temp controller & apply Kapton film to the surface. I've used heat to get epoxy to flow into areas th seal them in the paste. It was part of an ISO documented procedure.
I did not even know what it was until I looked it up. Looks like the irons we use for shrinking polyester fabric.You could use a sealing iron as a trowel.
I was thinking of the oil pan heaters you get for cars and equipment, similar, could glue it right to a steel trowel. May be cumbersom, would have to try it to find out I guess.Maybe something like this flexible12V heater?
I did some research, they make "dry" irons also, in other works they don't have the holes in the plate, water reservoir etc. If they don't come with a none stick coating put a big piece of the kapton film they use on 3d printers on the sole/face.How 'bout an old fashioned clothes iron with modifications to close the holes that are usually in the sole plate?