I think if you were to do this right, you could go buy a flat aluminum
strip (like I did today to make a lantern holder) and epoxy it in one piece
or sections to the back side of the AC housing, having marked and drilled
pilot holes thought where the snaps are to go. Then drill through the
aluminum and pop rivet the snaps in. Pop gun won't go down into the snap
head, you say? Been there and done that! Go to a hardware store and buy a
pack of those clamp-on ferrules they sell with the twisted/braided steel
cable. Get a pack that will fit down into the snap, and then drill one to
fit over the rivet. Use the spacer you just made to pop rivet them into
place. At least with the pop rivets you wouldn't be headed down the road of
needing ever-larger fasteners. There not a whole lot of stress on the rear
screen anyway.
Jim

On Sun, Mar 23, 2014 at 3:15 PM, Dave Mcneely <mcneely4@cox.net> wrote:

> ---- JordanVw@AOL.COM wrote:
> > In a message dated 3/23/2014 1:51:19 P.M. Eastern Daylight Time,
> > dart330@GMAIL.COM writes:
> >
> > It seems  like I could install the snaps into the plastic
> >
> >
> > just drill into the plastic.
>
> I think Jordan's trepidations about his are proper.  The screws will not
> hold well, and will pull out.  Next step, larger screws, repeat.
>
> --
> David McNeely
>