Thank You. I looked at their web site and will give them a call next week.Plexiglass Acrylic Glue - IPS Weld-On & Plastic Adhesives Online
I would do a bit of checking on which adhesive is best for the type of acrylic you have. There is a decent guide on this link.
Mask as close as you can to the crack to avoid the glue from 'melting' the surface of the acrylic when it squeezes out.
Maybe a BB gun lol .A cop told me that 1/4" Lexan would stop a 30-30. He used it behind his uniform shirt.
Methylene Chloride is great at this. However, is is highly toxic and is a carcinogen (cancer causing) chemical. If you do use it, please wear the proper gloves and do not get it on your skin.In the sign business we used to use what we called "methylene". It's thin like water. I found a video of it being applied: https://www.youtube-nocookie.com/embed/3KzZDi-aXD4. If you get a spill or a run, it will ruin the finish (gets cloudy etc.) We used to drill the end of cracks too, as already mentioned. If you soak drill shavings in it, you can make a thick glue (not good for getting into cracks). The trick is to watch it enter the crack and move along as it fills it. Linger too long and it will run or puddle. Too fast and it won't go all the way in. Once you partially glue, it's hard to get more glue in the crack. Keep the crack that you're gluing off of your bench (or anything) because it will make a mess on the bottom.
We "drill" small holes using hot nails, and larger holes using bits that have been ground at the cutting edge corner to prevent it from catching and cracking the plexi.Drill a small hole at the end of the crack or it may keep running. The hole distributes the stress.