Originally Posted by smokarz
thanks. my screen is not attached to wall, i used french cleats.
i was thinking of lightly tapping the back side so nail protrude through trims, then use pliers to remove nails from front. just don't want to break the komatex board during the process.
As mentioned previously, if you have indeed set the Nails below the surface of the Velvet, then trying to force them back through the opposite way can risk tearing or fraying the cloth.
If you can see the nail heads, the it's probably safe to go ahead and tap them out. But another issue arises. You won't be able to tap them all the way out, at best flush with the komatex. At that conjectire you are really safe to pull the Trim away from the komatex. On the Velvet wrapped Trim side, if you use Pliers and have to "roll" the nail out (...pulling "straight-out" is harder and can be problematically difficult to control), you have to use a thick pad of cloth between the Pliers and the velvet lest you "bruise" the nap of the Velvet and "slick" it out (...make it shiny...)
Going the other direction, you should still pull the Trim away from the komatex. Believe me, the amount of effort required is not great. Afterward, If you place a piece of thin hard material (1/4" Plywood...even a wooden Ruler...) between the Board and the nose of the Pliers and do the "twist & roll" method, you'll find the nail's head will pull the rest of the way out of the thin, Mdf Trim with minimum effort.
No matter what, you risk far less potential damage to the materials doing it from the rear.