.BBC-KT ..What brand of plastic did you buy from the Hobby Shop??? "Evergreen Hill" ? Or "Plastruct"?

All the plastic from Evergreen Hill is white. If its gray, it's Plastruct --and it's ABS plastic, instead of Styrene like the white stuff from Evergreen Hill.

Plastruct also sells some white plastic --some of which is indeed styrene, which will take "ordinary" (tube) glue -- But if the tube stuff doesn't affect it, it's "white ABS"....!!!

And if it's "white ABS" , --use "Plastruct Plastic Weld" General Purpose Plastruct Cement. It works on ABS Plastic, Strene Plastic, Butyrate, Acrylic --bonding these "to themselves OR each other". It's a liquid cement in a bottle with a brush.

One thing to remember about ABS -- you MUST sand your surfaces lightly beofre applying the cement! The "bond" will then hold extremely well.

Check the place you bought your plastic -- Plastruct plastic does not "usually" come in sheets --you normally find it in the form of specialty shapes like I-beams, etc. Evergreen does does come in sheets, as well as strips. I've used both extensively with no problems. ....