Velleman says its possible to print ABS on BuildTAK.
I can’t get an object printed without warping. Some objects wil be ok. I printed an object of 130x20x18 mm 4 times. Only one was reasonable good (1 corner slightly warped)
Is the only solution an heated bed?
I print on 220 degr celcius with 70% flow.
I installed a heated bed and i’m very happy with it!
I didn’t print ABS yet but with PLA I get now better results then with the Builtak sheet!
Cheers,
Dylan
I’m in the Netherlands minitreintje ( i think you are to ?) Wich heatbed did you installed and where did you ordered it?
I’m from Belgium 
I ordered a MK2a (most people have ordered a MK3) on Ebay.
After 2 - 3 weeks I received it, I put an INOX plate on it as build platform.
You can find more here:
http://forum.velleman.eu/viewtopic.php?f=64&t=12979&start=60#p65155
Cheers,
Dylan