Originally Posted by mtbdudex
I finally made my masks for 16:9 viewing.
Found these foil back 3/4" foam boards at the Lansing Michigan Menards back in January, lightweight and much sturdier than just foam boards.
Cheap, around $10 for a 4' x 8', cut in half at the store to fit in my car.
Prior during screen build I placed the 3/8" dia magnets in the border.
Verify 16:9 projection image, use blue tape to show.
At this time I re-confirmed my screen to PJ alignment, using LH side wall as datum, 7' 2.5" center PJ to screen matched exactly, PJ/a-Lens re-tuned.
Make template for exact transfer to foam foilboards:
Cut to exact size, templates help confirm exact location of all 5 magnets relative to the edges.
I cut the foam to be 1/4" inside the screen border edge on the 3 matching sides.
You can see the 5 magnets embedded in the foil/foam board just flush with surface:
I used foil HVAC tape to secure the magnets.
1st piece on the magnet/back side, 2nd piece I wraped back to front side to securley hold the 1st piece, those little magnets are really strong and I wanted them held in place.
Did not even try glue/silicone caulk.
I was worried glue/silicone would "melt" the foam board, not sure if it would or not but I had the foil tape on hand and it works.
Dry trial before putting black velvet on them:
3" overhang for the black velvet all sides:
Electric staple gun, used 1/2" depth staples, they grabbed/held in the foil backing perfectly (one of the reason I choose the foil foam panel)
Edge treatment, not prefect from backside but no binds from frontside :
Turned lights off, took pict, then Photo Elements back into the orig pict for this view.
Of course my 3 year old was watching Sponge Bob, so what the heck here is that for the family people here:
They are 17" wide, by chance I have 18" below the center shelf, so when not used they will go under there!!
(I can't say I planned it that way, sometimes lady luck come your way)
One more sub-project done in the overall HT/Basement project.
March 21st, 2009.