Why won't ABS stick to it?
I am using Hatchbox ABS filament with Scaffold Snap support material. Both nozzles are set to 240C and the bed is at 105C. The scaffold sticks very well to the bed, but when the ABS tries to extrude on top, it just forms a blob at the end of the nozzle and slides across the scaffold material. I have used the Hatchbox ABS on its own many times without issue.
Is this a good question?