I have been planning, carving and sanding to get the fuselage round. I started to fill in the voids and dings w/ the micro filler. I wanted to see how it was to work with. I WILL be using this for my fillet work. It sets in 4-5 miutes and is sandable in 20. I knock it down with 150 grit and finish with 220. It sands and feathers very well and has a lot of body to it. I will finish the bottom pan work and then fillets, fillets and more fillets.