I guess it depends on what KT. I have the Porsche version and zimmerit is almost a must. I did mine with Tamiya putty and a screw driver. I don't recommend it. A fellow Tanker (thanks Mike) told me use an old spur gear from one of your rc cars, place a long metal screw through it, wait for the putty to get tacky and then roll the gear up and down on the zimmerit FINISHED!I primered the whole tank first, without the tools etc.....painted the tools........put them on the tank..........then camo, weathering etc.