Putty Basic Type

I use this putty when filling gaps. Its pretty strong once it has time to cure and that depends on how much you use. I always let it sit over night before messing with it. I have had large gaps shrink quite a bit requiring reapplication and set time. Use a good primer and coat it more than once to get a good finish. TIP: I use q-tips dipped in lacquer thinner to smooth out the edges of the a area to reduce sanding.