Essential for 3D printing when nothing else works Simply the best. Sticky side goes on the build plate (believe it or not there are idiots that somehow use it upside down). Essential for preventing PETG ruining your build plates. It is preferable to use either glass, or the plain sheet steel side of your build plate with this.Clean both your glass / steel build plate before application, and the top of the tape after with 99% IPA and a microfibre cloth to remove fingerprint grease, and ensure a really good stick. Skip the 2nd IPA application and apply a thin film of Elmer’s purple gluestick if you want to make print removal easier, or are having trouble getting PETG to stick.I tend to use the roll as a roller to make sure the tape is extra stuck. Get each strip really close together and cut off the excess.There’s a misconception with the use of glue stick. Despite what people may tell you, it is both an adhesive and a stickiness regulator. A small film of it will help both make it easier to remove prints, and provide an adhesive surface for say, PETG. Too much and nothing will stick, too little and the PETG will go through the material, fusing to glass, PEI, PEY, PET etc. and sometimes, still not stick.A note to all those out there who want to protect their regular one-sided build plates from any oils that come out of your magnetic base when being put on upside down, I put some baking parchment / greaseproof paper between my S1 Plus’ regular textured bed, and the magnetic base. Really helps.Universally, any problem you have with something not sticking, is the presence of oils and grease. IPA doesn’t remove it, it just temporarily dissolves it until you manually remove it.For paint, yeh, it works. I use it for my cosplay but the edges don’t come out too great. I’d recommend Frog Tape or Tamiya tape over this for delicate and detailed paint. One person found this helpful