Originally Posted by Steveglass
The windscreen adhesive that we currently use has a 1 Hour cure time and is fully cured inside after about 7 Days. Not the easiest thing to work with and a nightmare to get off your fingers.
Very flexible though and may work well as a scope enhancer.
Sikaflex is available from plenty of outlets and is the same stuff I think.
I used it to fit windscreens when I was a JCB engineer and it is also used for fitting body panels onto cars.
I recently used a white version for fitting the shower base at home, as you can use it to fill wider gaps than silicon and it still sets in the middle. I will have to cut through it or pull the plaster off with it to get it out.
It basically sets like a solid rubber with a similar density.