Check your bed leveling and first layer height. If it's not sticking with hair spray it's not the filament and I wouldn't expect glue stick to do any better. Check bed temp too, but I'm kind of taking for granted that that's correct.
GsT
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New prusa printer
- Thread starter Bobbyc01
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GsT
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You may need to clean the sheet. Use a nylon scrub brush, like for dishes, and some dish detergent and thoroughly clean it. Don't touch the surface after that. Pat it dry and use it with either hairspray or glue stick. I find a light pass of Aquanet Professional Scentless hairspray works very well. Spray it on a cold sheet, right on the printer. When it heats up it will be ready to use
Here's a tip. If you can, for each print, locate the print in a new fresh part of the sheet. Then you don't have to prepare the sheet again (if you had previously sprayed the whole sheet). When you finally use up all the print sites, it's time to wash the sheet again. If you have to do a spot clean, use isopropyl alcohol. I use 99%, but have used 70% alcohol wipes in a pinch. At the first sign of lifting, just grab the sheet and wash it again - believe me, it will save you time.
FYI Prusa hosts a forum for owners. I learned some of the above from there, as well as here. Machine specific questions and solutions can usually found there. They're generally a good bunch and are quite helpful, just like here. I've had folks stick with me, to help me learn how to print TPU successfully. Small prints were fine, but long duration ones would fail after about 10 hours. Thought I would lose my sanity on that one. Turns out it was two things, 1) too much tension on the filament feed and 2) excess moisture in the TPU. Relatively easy fixes.
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Bed leveling and first layer height should be ok on a MK4S. I'm betting it's a greasy or not spotless sheet. Standard practice is to clean it up with hot water and detergent. Bed temperature can be an issue, (bad sensor) but out of the box, I'd wager it's the sheet cleanliness.
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Initially, if you don't have 3d experience, stick with filaments that Prusa has profiles on. This is the easiest path to success. Later, you will be able to modify profiles to add your own, expanding your filament capabilities. This is assuming that you are using PrusaSlicer. The profiles are filament specific and tell the printer extrusion rates, retraction, Z lift and other technical details during the printing process.
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Hadn't thought to ask, but what sheet are you printing on, the smooth, the satin, or the textured? Smooth and PLA work well together. PETG and satin are ok with hair spray. I had over adhesion with PETG on satin - which is why I dry the filament and use the hair spray. Supposedly PETG will just lift off the textured sheet. As I recall, the printer comes with a roll of PLA and a smooth sheet. But I started out with the MK3S+ and upgraded to the MK4. MK4 is much better than the MK3S+.
Grease / oil would do it, though I have no idea how it would have gotten there. I've printed out of the box on three printers, 7 print surfaces, and never had adhesion issues since I started using hairspray. I clean my sheets very seldom. Normally another light spray and I'm ready to print again. Seems pretty material independent as well.
GsT
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It's a common complaint on the Prusa forum - adhesion. The top recommended solution is washing the sheet. All I know is that it works for me, on a Prusa printer. Hair spray, or at least this hair spray works very well for me. I don't bother with glue sticks any more.