I just got my 3D printer up and running but only got models for the fan and the board housing. Arent there any other models out there? I have NO clue how to make my own models 
Hi hoejdata,
then you should learn it asap. Seriously - the greatest potential of a 3D printer is the ability to make individual stuff, and you want to skip that completely?
The RepRap wiki is always a good source of information, and thereās also a page listing many websites with āprintable partsā (hint: search keywords).
However, not every stl file thatās available is also printable. There are many possible (and unfortunately very common) errors. Repetier Host (0.90+) has a bit of an error recognition routine, which will alarm you e.g. about intersecting triangles and such. If errors are present, you can of course still try to slice and print the object, maybe itāll work ā¦
Some CAD programs are already mentioned on the K8200 webseite, or search the forum, there have been a couple of posts about this.
Cheers,
kuraasu
Our printer was bought to be a gimmick at a computer exhibition. So its not really for personal use. I doubt i will find the time to learn how to make models but who knows maybe in the future ill try.
You donāt have the time to learn some simple CAD software but you think youāre going to learn how to print (i.e. how to react when simple printing problems show up) fast enough?
Good luck.
If its ok with you i will start out learning how to print some generated models and then we can talk about learning simple CAD.
But thanks Soundguy for the link 
Hi hoejdata,
go ahead, by all means. Please donāt get me wrong - the āgood luckā was sincere, not sarcastic.
The learning part is absolutely necessary, and youāll see progress soon. However, some problems may not show up immediately, or only when trying to print special objects, etc. Thatās why I think the combination of using the printer in an exhibition setup and low time for preparation is dangerous. Not impossible, thatās for sure, but error-prone.
Cheers,
kuraasu
Hehe ok Kuraasu I am allready learning trial by error way
My problem now is i cant figure out if i should use the fan or if its even necesary to be used. My first few prints seems like the plastic melts too much. So either i have too much extruder heat or no fan operation.
Also the bed tend to bend when it gets hot so its to completely flatā¦ Just another issue. Maybe i need that glass plate 
Hi hoejdata,
about the bed: yes, a glass plate or mirror will help. PLA sticks quite well on heated (50 Ā°C), clean glass. The screw heads probably stick out by a tenth of a mm or so, thus you may need to deepen the countersinks (without damaging the circuit paths, of course) or take the screws out and fix the whole assembly in some other way, e.g. (non-permanent) glue, tape, ābulldogā clips or such.
When you want to keep the PCB as printing surface, widening the holes in the alu plate below the PCB can reduce the bending a bit. Also, some people have reported that the bending decreased over time.
The fan should be on for small objects (i.e. when the printing time per layer is low) and for some special printing situations like bridging or overhangs. In Slic3r, thereās an automatic cooling setting that, when activated, will control the fanās rpm and also slow down the printer accordingly. A fan nozzle can help to focus the airflow, so that less rpm are required for the same cooling effect. This can also be beneficial in terms of the fan cooling not only the object, but also the heatbed.
Cheers,
kuraasu
PS: .dk?
edit: typo
yeah DK