Welcome to the SeeMeCNC Community

Good day everyone, New to the Rostock max v2, and enjoying it thoroughly.

Have learned tons thanks to the forums and info available, but I am running into a problem that I have been unable to overcome.

I am printing a large triangle that covers the entire build platform from tower to tower, that is about 1.5" thick in each direction.

I am printing seemecnc midnight black, with the following.

Extrusion temperatures of 230
Bed temperature of 90, 100, 110

Extrusion at 20mm sec for base layer and 40mm sec for subsequent.

4 outlines, 4 layers top and bottom.

First layer set to extrude at 300% height and 150% width.

Standard layer height 0.2mm

40% infill


Concentric fill, 0.35, and 0.5 mm nozzles

PEI build platform

Enclosure with heat lamp

Ambient during extrusion 50 c


Curling happens on the x, while Z never curls and y may or may not curl depending on something I have yet to identify.

I have printed worth and without a raft, no change.

Printed with brim of 6 passes and two layers, no change.

With and without cooling fan after 15 layers.

I have not used abs "glue", as I have challenges removing the parts from the PEI already.



What suggestions do you guys have? I really need to figure this out. I have a few projects waiting on this.

Please advise, and thanks in advance.

Mitch

Can you share a picture of the part?

I'd try rotating it on your build plate to see if the trouble follows the model, of if it looks like an adjustment on the machine.

Add a brim in your slicer. I put 20 lines around ABS parts that curl, and that definitely helps.

If that doesn't do it, add "mouse ears" to your part so that there's not a sharp corner that concentrates the curling forces, spread it out.

Never use cooling fan with ABS, crnak up the temps on your hot end, make sure you're well calibrated. Print a thick first layer, sand your pei with 1500 grit and clean with isopropyl alcohol before you print.

Try with 25% infill or less. 40% might be too much.
Did you meassure the temperature of the bed where it curls? It gets colder near the edges.

An aluminum disc would help dissipate heat more even