KLuck13, i didn’t mean to offend you.
It’s my opinion, that i would make the heatbed myself, as the bord already supports it, like most of the do.
[quote=“Edurobot”]The board has all we need to adapt a heat bed.
And a heat bed is a cheap part: http://www.banggood.com/MK2B-Heat-Bed-PCB-Heatbed-For-3D-Printer-RepRap-Mendel-p-937404.html
I can understand why there is no more heat bed in the K8400. If you read the K8200 forum, you’ll see many printing problems and issues with the print bead: not flat, object stick not, difficulties to print ABS, long time to heat… But, Velleman, it would beau a great option, if you could propose the heat bed as an option (not to expensive…), as the second extruder![/quote]
The main reason for the reported problems with the k8200 heatbed are
warping and too less power.
Warping is fixed by using a glass plateon the heatbed easily. (althogh there are better hetbeds available (Reprap MKII etc.)
Power problem can be fixed by using a 24v supply directly to the board or (as i did on my k8200)
connected only to the heazbed pcb via a simple realy as driver.
Parts for that will be max 5€ i think, aside from the heatbed and the power supply.
There is a good chance that there will be parts for a heatbed upgrade to the K8400 on thingiverse soon.