Sealing plexiglass, stop-holes?
Hi,
While removing some caulk, a 3/8" crack formed from the edge. I stop drilled it only to find a smaller, hair line crack formed from the stop-hole. A second stop hole and the part is stable. Fortunately this is just the wing tip cover for the navigation light so I only need a water-tight seal clear enough to pass light.
Is there consensus on how to seal the stop-hole and/or water seal the crack?
I did find an article using Acryfix to repair a canopy. But the article addresses canopy repair by laying up layers of UV cured, clear plastic. For a canopy that makes sense and it would work for the wing-tip cover.
I've also seen references to using "Weld-On #4" and acetone dissolved plexiglass. Mostly looking for recommendations.
I'm planning to use clear, GE silicon to replace the mold-growing, caulk.
Bob Wilson
sealing drilled stop holes in plexiglass
There is a glue used in RC airplane assembly for attaching clear plastic canopies. It is called RC 56 canopy glue and comes in a plastic squeeze bottle. It is milk white and dries to crystal clear when hard and is flexible after hardening. I have used this in place of silicon rubber as a sealant as well and works great. Find it at your local airplane hobby shop.