I recently bought a Solidoodle 2 3D printer.
Some of the models I’ve made are available on Thingiverse.
I superglued small neodymium magnets to 12" by 12" by 1/16" lexan sheets to build removable walls for the printer.
Adding these walls substantially reduced warping, improving the print quality.
The regular baseplate is not sufficiently flat to prevent warping. I use a 6" by 6" by ¼" glass sheet clipped onto the metal baseplate. Aluminum foil (between the baseplate and the glass sheet) is used to keep the bed flat and level.
I use either multiple layers of hairspray or an ABS/Acetone slurry as the binding agent.