Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
The problem with gluing the acrylic sheets is that it's not something I can expect people to do on their own, since (if you want it to look good) it requires a special solvent cement and a lot of practice to get it right without ending up with a lot of bubbles. Gluing the parts ahead of time would mean it's not a model anymore, and the labor cost would make them very expensive finished gadgets.