Finally, make sure that you consider the materials at hand. This goes for both the filament you’re printing with, as well as your printer’s print surface. Try following these tips to avoid mishaps.
Apply an adhesion helper to the bed. This includes hairspray, blue painter’s tape, and standard household gluestick. These will help stubborn materials stick, and will also serve as release agents for materials that stick too well, preventing damage to your print surface. A thin layer should do the trick.
Avoid printing directly onto the bed with TPE’s and PETG’s. This goes with the previous tip but deserves its own mention. TPE and PETG’s are notorious for sticking too well to print surfaces, and will quite possibly tear out pieces of any surface you have, including PEI, Kapton tape, and even glass. Always use a release agent for these materials.
And with that, you’re ready to tackle the first layer for a wider range of materials!