First of all, i apologize in advance for my english mistakes (i used to writte it better but it is quite rusty now :rolleyes: )
I started yesterday to print some models with our new M200 3d printer and I have observed that some pieces suffer a separation between layers.
During the printing process I have heard a "click!" noise and then I could see a horizontal clack in a medium height of the part.
I think that the material contraction causes internal forces that, in this case, lead to local clacks. But I also think that this material is spected to resist these internal forces.
¿How could I fix this problem?
I used Z-ABS, with normal printing speed, and the fan speed is set to "auto" (20%).
The room where the 3Dprinter is placed is below 20ºC at this time.
Design your objects to reduce warping, the simplest way to do it is following similar rules as for injection molding design - i.e. models with thin walls are less prone to warping then solids with large volume of plastic. You can find guides for designing for injection molding on-line.
Please note that additional side covers protects your prints from environment effects (such as drafts) that may have significant impact on layer bonding.
The pieces have been printed with medium infill mode. I guess I should try printing them with the mesh infill type.
Has the layer thickness any impact on layer bonding? And the fan speed? Do you recomend reducing its speed when the room temperature is low? The printer has been working all night long and the temperatura would be not above 16ºC
I have also observed that the lower faces of the pieces have certain curvature.
I agree on the advice about ambient temperature. It is not good for a part like that to be printed in an environment under 20C…especially if there are no enclosure doors.
Place the printer in a room that stays constant above 20C and add some doors…the risk of delamination will be reduced drastically.
After serveral trials, I have noticed a notable improvement in the printing quality.
The first thing I made is to reduce the infill of the pieces. When I select the infill type, "mesh" . the pieces becomes totally holloy.
This caused the "inflation" of a pair of pieces with plain faces (I guess that it happens because of the warm air into the piece), so I finally use the light infill type.
I cleant the printing platform and "painted" it with the mixure of z-ABS with acetone.
Here is difficult to obtain a good room environment because the office is in an old building with a poor heating system and a high ceiling. So at this moment the only thing I can do is to wait for the summer :D.
I know that the side covers would be a good help, but I am not the owner of the printer and I need permission from my boss to purchase any accesory
