Filling nail holes in mdf trim

[ryan paulsen]

How hard is it to fill holes in newly installed mdf trim? How visible should the nail holes be after painting? Sorry for the loaded question.

[Phil Thien]

About the same as filling nail holes in trim made of anything else.

I have noticed that people rarely sand the filler enough. They're applying it like drywall mud and feathering the edges. Try not to get too much beyond the hole you're filling, make sure the hole is overfilled, sand it back to even with the surface of the trim.

[Steve Jenkins]

About the same as filling nail holes in trim made of anything else.

I have noticed that people rarely sand the filler enough. They're applying it like drywall mud and feathering the edges. Try not to get too much beyond the hole you're filling, make sure the hole is overfilled, sand it back to even with the surface of the trim.
+1 and invisible

[scott vroom]

I avoid MDF moulding whenever possible. When we shoot 15 ga, the MDF around the hole mushrooms out, requiring either a sharp chisel or added sanding to flatten. 18 ga same thing, although to a lesser degree. A PITA if you're doing production work. Having said that, whatever filler you use on wood moulding will perform the same on MDF.