When working on my new printer (CR-10 S5), I ordered a PEI sheet since I heard that was the best sheet for 3d printing since it had the smoothness of glass and the grip for 3d prints. I had found one on Amazon for about $90, which was the right size for my printer, which was 20×20 inches. I also got a cut piece of glass from lowes which cost about $14, including the cost for cutting in-store.
When it arrived, I had two options: mount it on top of the glass, put clips to clip it under pressure, or buy transfer tape to apply it to the glass. Since I didn’t have the suitable tape for the glass bed, I used clips, but unfortunately, I only had one clip that was big enough to hold the sheet and glass together. I looked it up and found a similar question on Reddit from someone wondering what kind of alternatives could you replace instead of using clips for the hotbed. A user recommended that you use blue painter’s tape since it is heat resistant, which made sense since many people used painter’s tape before using bed surfaces was popular since it was heat resistant. The material was textured to grip the filament. Most other tapes have a softening point when heated up and don’t stick.
I ended up using painter’s tape for holding the PEI sheet to the glass bed, and so far, it’s working great, which is an excellent alternative for not having to go out and buy more clips.