Print lifts from right - PLA & ABS

[small 2]

I just got my Ultimaker 2 a week ago.

I have been printing with both PLA and ABS. The prints on the right side of the glass bed seem to lift up. I have leveled, and re-leveled the bed. Made sure the level is right using the leveling app on iphone, used materials like Gizmo Dorks, Color Fabb PLA and IC3D ABS. Nothing seems to work.

The settings I use while printing PLA are as follows:

Print speed: 40 mm/sec; Fill: 100% (This varies and on different infill levels, the problem remains the same); Layer height: 0.1 mm; Support: Brim; Fan speed: 100 %: Bed temperature: as per cura standards.

The brim for support prints great on left but has gaps on the right side of the bed. Eventually the print starts lifting a lot from the bed on the right hand side.

Please see pictures attached.

[sharedmedi

a=gallery:images:12252]

How do I solve this problem.

Thanks,

Small

 

[gr5 2,069]

Bed temperature: as per cura standards.

 

Not helpful as this changes depending on when the printer was shipped and no one is keeping track of Marlin settings for different shipments. And probably not important anyway.

The orange photo seems to show a part with skirt but no brim. Brim is very important to keep lifting from happening. The green part shows brim. I agree the right side looks like it has gaps. I'm wondering if your glass is curved like a bowl. There are 2 problems that cause non-flat surface. The less likely one is that your X or Y rods are not parallel - your entire printer frame could be bent such that the pairs of rods are not parallel.

Much more likely though and just as easy to fix - often the screws under the glass are not completely set - the tapered holes are not deep enough and the screw heads are pushing up on the glass. Check that. And consider drilling them out a bit more if the heads stick up.

 

[kris 29]

Always use brim.

For ABS I increase the platform temperature to 110, for PLA to 90.

Enclosing the build volume also helps.

[gr5 2,069]

I wouldn't print PLA hotter than 75C bed because it is then very delicate. PLA should stick very well at 40C. The advantage of 75C (or 90C) is now you are well above the glass temp and it acts like clay (aka plasticine). If you touch it then your finger print will be embedded. This just happens to the lower few mm but it keeps the corners from lifting.

But this is a desperate technique not needed and has other (more minor but definitely there) undesireable symptoms.

Instead coat the glass with a thin coat of PVA glue. The supplied glue stick works very well. Also wood glue (also pva) or hair spray (also PVA). But to get it even better, coat only half the glass with glue stick - then add about a table spoon of water and spread the mixture around with paper towel or tissue so that it's very thin. Then turn on the bed heat and wait for it to dry before printing. It should dry to an invisible layer.

 

[small 2]

 

 

The orange photo seems to show a part with skirt but no brim. Brim is very important to keep lifting from happening.

 

 

Thank you for responding.

 

@Gr5, In the orange picture I did not attach a brim, but in my next print I attached a brim to the object but it still lifted on the right hand side. Please see attached picture below.

 

 

I did level out the screw heads from under the glass top as you said. I think that helped with the next print.

 

Also, do the X and Y rods have to be absolutely parallel? How do I check that with precision?

 

The Y axis rod on the right side of the machine seems to be a little loose. I checked the rest and they seem to be fixed while the Y axis on right side pops out about .05mm while printing as the belt rotate? Is it normal or something I need to fix?

 

 

I wouldn't print PLA hotter than 75C bed because it is then very delicate. PLA should stick very well at 40C. The advantage of 75C (or 90C) is now you are well above the glass temp and it acts like clay (aka plasticine). If you touch it then your finger print will be embedded. This just happens to the lower few mm but it keeps the corners from lifting.

 

How do I change the Bed Temprature? Is there an option in Cura?

 

Lastly, I have started using aqua net hair spray for the prints to stick well. It works so far.

 

I appreciate your help.

 

Best,

Small