Profi-Fill lightweight Filler, white
How often have you needed to fill out a dent in Balsa, you dream of a filler that sands the same as Balsa and as light as Balsa, does not clog the glass-paper, does not shrink or crack, that you can form an edge that does not crumble, can be cut with a knife, does not need a smelly and dangerous hardener, adheres to most surfaces on a model and can be worked with ease.... An impossible list of demands you rightly think.
Many times in the past, as I have mixed epoxy and micro balloons or the standard polyester body filler, I had never imagined that I would have a filler that came out of the jar ready to use, requiring at the most two or three drops of water, yet when dry, is water and fuel proof.
Now all this is possible, we have the dream filler, it is Profi-Fill.
We have used Profi-Fill very successfully with Roofmate when making patterns for GRP moulds. Profi-Fill does not dissolve Expanded Polystyrene. Glassfiber reinforcements on the wing roots and overlaps on PROFICOVER can be filled to perfection.
No need to attempt to fill areas absolutely smooth, just apply Profi-Fill to the damaged area or gap and leave a while to harden. You then have only to sand off the surplus filler and you will find the filler sands to a perfect feather edge.
Profi-Fill comes in white, you can mix Acrylic water based colour with the white. Like on Balsa, cyano glue can be used to toughen up the surface.
In short, Profi-Fill is fantastic, try it once and you will surely find you cannot live without the stuff.