Hi There, this is my 3d printer (a self-made Kossel type) heated bed, a simple 6 mm glass; I have a strong adhesiveness with PLA using a common hair spray, but it doesn’t work fine with ABS I’m trying to use; I heat the bed to 90°C for ABS; I notice it’s useless tying more warm, the temperature doesn’t rise too much near 100°C, perhaps I have to insulate the bottom part of the bed. SO the question is : what may I use to get a better adhesiveness? simple little pieces detach from the bed on its edges. thanks and bye
Maybe having the glass blasted with a very fine oxide would help or find frosted glass give something the abs to key too
ABS juice. Acetone with pieces of abs. Spray onto the bed. Or use capton tape on the glass.
ABS can be tricky (more so without a heated chamber) … it is a picky material. You can even get detachment due to minor warping of the first layer. One thing to try is ABS Juice. You take ABS shavings/scraps and dissolve them in Acetone and use that as a coating for the first layer. Be careful removing it from the bed as it can become well stuck. On the slicer side you can try adding ‘mouse ears’ to the first layer as well.
Links:
http://www.makerbot.com/blog/2011/02/25/mouse-ears-defeat-corner-curling-monster
Well ive tried everything but it never sticks that well unless you rise the heatbet to 125 deg 
i use filaprint (filafarm a german company) and it never curles up
I have recently started using a thin layer of Copydex (a latex type glue) over blue painters tape. I get 2 or 3 prints off it and it’s easy to remove. I’m happy with the results and will be ditching the hairspray for now. I must say that I only print in PLA as I do not have a heated build plate.
Enclosure! ABS needs enclosure first!
Brim it to high heaven. I tend to put a large brim on ABS if I have to print it. In S3D, it’s usually about 10-15 loops.
I use a semi-enclosure for ABS. Well actually two books placed either side of the printer. It stops draughts from blowing across the build plate sufficiently.
For adhesion I use ABS juice. A little ABS dissolved in Acetone and painted onto the glass bed. Be careful to not allow the mixture to come into contact with your skin. It will soak in and harden.
Temperatures? I use 220C or higher for extrusion and 130C for a 3mm thick glass bed.
@Neil_Darlow i already use the coolingfan and that even works better for me. Prints look much better (before they were thicker at the bottom, which was not heatbed temp or adjustmentrelated)
I like using PEI laminated to glass as the bed surface. After you get going with it, it’s very reliable.
I have been having great success with PrintBite, using PLA, ABS and PETG all stick like sh*t to a blanket and when the bed cools just release.
If your problem is small pieces, use a raft.
Interestingly, no one has suggested using a smaller glass piece yet. This looks like a 5mm thick piece, which will act as a huge heatsink around the edged of the heated area, pulling out a lot of heat probably even from the very center of the bed. ABS works best above 110°C bed temperature, the most reliable store-bought adhesion solution for it is glue stick in my experience.
Also use an insulation below the heater. get some cork and put it directly below the heater. That will direct all heat up.
I would solve the bed temp issue first. I’ve had good results with blue painter’s tape with out anything added. For large prints I may put down some glue stick in a cross hatch pattern (a lil trick I learned from waxing my surfboard). I’ve also done hairspray and ABS Juice but I like the glue sticks. Although I’m using a Prusa I3, my prints still work well without an enclosure at 100 degrees bed temp.
You might also need to insulate the underside of the bed. I use a piece of cardboard with aluminium tape on both sides, nophead style. Take care not to close off the cardboard edges, as the air is the insulator here.
I print mostly with ABS (cheap if you get it from China) I use basic 3M masking tape, bed at 110C, extruder at 240C.
Depending on the part I have to print I use either 3dlac (for small footprint part) or ABS juice for large footprint parts.
Always stick well!