On Monday, February 10, 2020 at 9:45:05 AM UTC-8, Morris Carter wrote:
best way to trim a new canopy and best glue to use to attach to fiberglass
frame

I don't think that there is any universal "best" way, it depends on the materials, tools, and processes available to you at the time you need them.

In my shop we have a heated tent we can warm up to 80F for working acrylics.. We never cut, drill, or sand acrylic unless it is stabilized at at least 70F.

For cutting, we usually use a Harbor Freight 1" diamond rotary cutting disk in a Dremel-type moto tool.

https://www.harborfreight.com/diamon...-pk-69657.html

For bonding, we use an old-school epoxy mix, Epon 828 2:1 with Epikure 3140 hardener, filled with flox and a bit of cabocil. George Applebay once told me that diluents such as BGE (butyl glycidyl ether) in laminating epoxies can attack the acrylic, but I have no direct experience with that. I know several shops that use laminating resins for this so results clearly vary.

We mask off the bondline, sand it with 80 grit for tooth and degrease with isopropyl alcohol.