I've been working on the glare shield for the past week with not much success. First off, I didn't care for the acute angles I had in the first version. My concern was loosing a pen/pencil/small item down the side between the windshield and the glare shield. So, I set about to soften them up a bit. I cut an extra piece into each side adding a bit of a curve. It doesn't totally eliminate the potential problem, but it will be easier to retrieve a misplaced item. Plus it blocks less of the view forward.
Satisfied with the new look, I started to think about a material to seal up and smooth out the joints. I selected expanding foam, the kind you get at Lowe's for sealing around electrical outlets etc. Not only didn't it work, it created a huge mess. Once cured, it was too rubbery and not dense enough. It sanded poorly, actually it tore instead. The only good thing about it was that it peeled right off the surfaces so I it was easily removable.
Once again, back to the beginning, I decided to try drywall compound. Of course, I selected the wrong one to use. I picked up the lightweight paste. Unfortunately, it didn't cure very quickly. It was supposed to cure in 30 minutes, two days later I was able to sand it to a point but it's still soft. Now that I've sanded it pretty thin, I'll give it some time to finish curing. I'm going back to pick up some traditional compound that will dry hard and cover over this stuff.
Off to pickup the new compound...