I'm redoing my Initial D FD3S front bumper because it doesn't look right(Thanks alot Fujimi!) I've cut out the lower grill and put Regular Tamiya Putty to shape it. Here is the problem, when I sand it, the putty starts falling apart (I know I shouldn't use this type of putty, should of use the one in the picture) SO now, I have to redo it all over again with Tamiya Proxy Putty (Right kind this time I hope) but I have no idea how to use it =P And how the heck do i smooth it (with what tool? not fingers..i know i know)