How is plexiglass made?
Plexiglas is the trade name of the polymer polymethylmethacrylate. Objects from PMMA are manufactured by extrusion, injection or compression. The method of cells casting was abandoned now.
How big is the dinosaur? How thick is the plexiglass? Many species of dinosaur were about the size of turkeys, and would not have been strong enough to break typical panes of plexiglass. But if a long, thin sheet of plexiglass spanned some chasm upon which a large dinosaur stepped, it could easily snap, sending the behemoth plunging to its death far below, where both it and the plexiglass shards might end up buried in…
Although some people claim that a Canadian named Dr. William Chalmers invented the plexiglass in 1931, there is evidence that he was not in fact the originator of the idea. There were two German inventors who started working on plexiglass long before 1931. Their names were Dr. Walter Bauer and Dr.Otto Rohm.
A template is really just a pattern of anything. I once used to make wood and plexiglass ornaments, I made many templates of different designs and then placed them over sheets of wood or plexiglass and drew around the shape so I could then cut them out with a bandsaw. This technique can be used in many ways, but the pattern is usually still called the 'template'.
I can confirm that the 'works' Scott motorcycles ridden in the 1923 Isle-of-Man Senior TT races had transparent windshields fitted to the top of their front racing number plates. This of course predates the invention of Plexiglass or Perspex, as it is known this side of the pond, and so they were probably made of Celluloid, which is highly flammable. No doubt when a safer, less flammable material became available in the early 1930's, it…