Impossible to print with ABS

K8200 3D Printer K8200 - Issues while printing
1

Hello,

I have a problem. I can’t print with ABS.

I set my bed temperature to 60°C, I tried with extruder at 225°C and 235°C but the result was always the same.

All corner unstick the bed after 2 or 3 level.

How do you do to print with ABS ?

2

Somebody can help me, because I have always same problem

Thanks in advance

3

set your bed to 70° so it stays heated and roughen up your bed with a piece of sandpaper (grit 200-400)

4

I have already roughen up my bed, but the problem is the same with 70°C, I have already tried

To be able to heat over 60°C I needed to add external power supply for heatbed

5

A mirror or a glass plate makes the bed more level and the filament has more grip on the better printbed.
You can search for one in a decoration store. You can mount it with clamps on the original heated bed.

Then cleaning is everything. Clean your printbed with alcohol to make it fat free so the filament has a lot more grip.

This 2 steps would help to print small abs parts.
If they are bigger the heatbed temperature must been set as high as possible arround 100 and 120 ° degrees.
I don´t know if the bed can reach this temperatures and when it would take a long time but this will help.

6

Ok for the glass, but how is doing the heatbed. because it’s not the same between heating the bed and the bed + the glass

7

The heat goes through the glass . At my printer the heating time is nearly the same and the temperature would sink so fast because the glass safes the heat .

8

I put a mirror, but the result is worst.

I have cleaned the mirror with alcool but the filament has no more grip see less grip.

Can you explain me what I need to do on the mirror to have more grip with ABS ?

All prints with PLA are OK with and without mirror.

9

Put some blue painters tape on THE mirror, 2 layers, then print( use a brim of 2 mm) and it wont come of easely

10

It is the only solution ?

Where can I find this tape ?

Otherwise can you say me the optimal temperature of the bed and the extruder ?

11

Somebody from Velleman can help me because the K8200 is done to ABS and PLA but we never received something to configure for ABS, only for PLA.

Can you help me please !

12

We are still working on a configuration profile for ABS

13

Thanks for to answer but do you have a approximative date

14

No we do not, perhaps other users can already offer their working configuration.

15

Right now, we are fine tuning, so it should not take long before we can release an initial version.

16

Might be a useless tip comming from me Buglife, since i think you know way more about the printer then I do,…

But my prints (PLA) stick to the bed way more since i made a fan mount, i have no idea how it is with printing ABS but i thought i should let you know cause of your tips on my topic.

Question though, I havent seen any MAX specs about the printer, you heat up the printer to 265 and the bed to 70 ??

Does anyone know what the max is? …

If this keeps unanswered, i will buy a roll of ABS and test it myself, currently im a full time google’er making my living at home and i dont mind trying to find a solution for you, i’d like to print ABS myself as well

17

The fan would cool down the PLA, which would cause it to detach rather than attach.

Sanding the heated bed and degreasing it is the best way to make the PLA attach a lot better to the heated bed.

18

I have found a few solutions.

I had the same drastic problems.
-First print came directly loose. reaction: Heated up my bed.
-Second print came drastic loose reaction: Cleaned my bed extra and heated up the ABS from 190 degrees to 235 degrees
-Fourth print came loose reaction: first cooling down and suddenly rememberd that a bigger temperature difference causes a bigger deformation…

So… I did NOT clean the bed anymore (somehow this is better… I think because some material of the ABS is left behind on the bed)

  • Tuned my nozzle almost against the bed so there is a very thin first layer,
  • First layer temperature to 180 degrees and bed as high as possible (about 70 degrees) so the delta temperature is as low as possible
  • After first or second layer, tuned up the temperature to max. 220 degrees
  • Turned off the Fan!! with long ways this fan is absolute not necessary. It slowers the flow of material of the nozzle. Only necessary with smaal loops of about 20 seconds. NOT 60 seconds!
    And Voila! It worked!!! Its a difficult material but the solution is nearby. I could even produce with 300% speed! BUT I had to manage the flow and speed 1 to 1. 100% = 40 mm/min.

Unforunately, the first layer still deform after the production, but not to much. The layer about 10 higher dont deform anymore. I’m serching for the reason those layers dont deform, because that the solution for also the first layers.

I’m curious how it works at your printer if you try this.

Ps: I did not use glass or something, so I dont know how that reacts and dont forget, the temperature difference must be as smaal as possible, so DONT use a very high melt temperature but as low as possible. If the nozzle dont gives melted abs anymore, then higher up the temperature and push sometimes the ABS in the nozzle until the flow begins again.

Succes! Greeting,
Jeroen

19

Hi,

I tried to print with ABS with the last standard configuration released.

Printing was almost ok, but i couldn’t remove the external perimeter from the bed…

Is there any solution to clean it well?

20

I have the same problem offcourse and scrap it off with a metal part with a pretty sharp edge. Like a razor. Then it goes off pretty well.

Succes

[quote=“InCo”]Hi,

I tried to print with ABS with the last standard configuration released.

Printing was almost ok, but i couldn’t remove the external perimeter from the bed…

Is there any solution to clean it well?[/quote]