What is the proper way to clean the heat bed?
I think my heat bed is losing grip. I had a print going this morning that started fine, it had a strong brim and I came back up an hour later and it had detached and looked like a pla murder scene lol.
I can tell there are old outlines of old prints (think like stains) on the bed. I've wiped it down with a paper town and some rubbing alcohol, but eventually it will just start to do this again. I am very new to 3d printing and wasn't sure proper heat bed maintenance.
RE: What is the proper way to clean the heat bed?
There is no single, one size fits all, solution. I suggest you read all suggestions, try what you want, and see what works for you!
My process,
take the Print sheet to the nearest source of hot water and waterproof working area that you are approved to use...
As the Boss of the Household, I allow me to use the kitchen sink... (Privilege of living alone!)
I use a new kitchen sponge (which I keep to one side for print sheets) with a small dash of Dish soap (Any plain dish soap should work, Dawn and Fairy liquid are two well known names that come to mind) AND SOME HOT WATER, give the print sheet a really good rubbing to remove contamination, then rinse off well, with clean HOT WATER. then DRY IMMEDIATELY with Plain paper towels, then keep your fingers off the print surface. 
Other folks, Different Strokes!
Please be aware, Some folk recommend using Acetone to 'freshen up the Print Surface'
I found that this process causes the PEI Sheet on the smooth print sheet, to crack like Crazy Paving
I believe in Powder coated print sheets, Acetone softens the powdercoat,, So I steer well clear of Acetone!
there are all sorts of magic potions but I don't use them.
Please be aware that TPU and TPE, tend to adhere too well...
PETG can also be difficult. some folk use adhesion reducers with these filaments windex, gluestick and talcum powder come to mind.
If you are having trouble removing prints, from print sheets,
Consider dribbling Isopropyl Alcohol around the base of the print, on the COLD print sheet, let it soak for a while, then carefully try removing the print again.
Good luck and Happy printing
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE:
What she said...
The occasional trip to the sink is the best way to rejuvenate a steel sheet. I used to insist on using fragrant free dish washing liquid until I realized it makes no difference so now I'm using whatever my wife has bought that week. But I use a dedicated sponge.
I also use a clean cotton towel to dry the sheet instead of paper towel as I found that the paper towel left small pieces of paper on the textured sheet
Edit: and use 90+% isopropyl's alcohol to wipe down the sheet between prints
Having said all that, over time you'll have "shadows" of previous prints on your sheet that won't go appear. If they impact the bottom of your prints, well, steel sheets are a consumable.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: What is the proper way to clean the heat bed?
Thanks everybody that helps a lot I also learned today that there's actual settings that you can change the strength of the brim and how big it is and you can turn off the fan for so many layers so it make sure that it's not cooling off too soon or whatever so I'm going to give all that a try now.
RE: What is the proper way to clean the heat bed?
A BIG game changer for me was switching from Palmolive dishwashing soap to Dawn Ultra. Palmolive contains hand softeners that interfere with adhesion.
MK4S/MMU3