Topics

1

General Discussion / Bottom layer stringing

« on: September 26, 2019, 03:22:00 AM »

I'm getting pretty good results with Z-Sense, particularly since upgrading to the V2 perforated plate which is thicker (and less prone to warping). I've tried a few different height settings. At higher heights, some layers don't stick together. At lower heights, the extruder clicks and material sputters out, particularly on the first layer of the raft. I played with the heights using quarter turns (0.125mm).

I went with the lowest setting that didn't make the extruder click.

The prints look great on the outside surfaces, but the underside is a different story. The attached image is an extreme example, as I've already removed some of the loose strands with an exacto knife. I was actually getting slightly better results with hex infill and a slightly faster speed (+25%), but there were still several loose strands.

I've tried removing the support while hot and after cooled with about the same result.

So the question is ... is this a height issue? retraction? temperature? Is there a good test print that I can use that works well for optimizing ABS? Here are my settings, and this is with a HEPA enclosure using IC3D Red ABS.

Application version: 2.11.1.0
Estimated print time: 1h 46m
Material usage: 8.52m (20g)
Printer: Zortrax M200
Profile: Last settings
Support type: Automatic
Support: 20°
Material: ABS-based filament
Nozzle diameter: 0.4 mm
Layer: 0.19 mm
Quality: Default
Infill: 50%
Fan speed: Auto
Seam: Normal
Outer contours: 0.00
Holes: 0.00
Surface layers Top: 6
Surface layers Bottom: 3
Support Lite: Yes
Smart bridges: Yes
Support offset: No
First layer Density: 100%
First layer Print speed: 100%
First layer Flow ratio: 100%
First layer gap: 0.21 mm
Raft Enabled: Yes
Raft layers: 6
Platform-raft gap: 0.20 mm
Raft Density: 100%
Raft Print speed: 100%
Raft Flow ratio: 100%
Print speed: +0%
Extruder flow ratio: +0%
Top layer infill (%): 100
Bottom layer infill (%): 100
Extrusion temp.: 230
Platform temp.: 105
Retraction speed: 36
Retraction distance: 0.8
Support Density: 4.00 mm
Gap XY: 0.31

2

General Discussion / Support stuck to model (fixed extruder temp too high error)

« on: August 23, 2019, 04:48:46 AM »

I got the ZT-HE because my ABS was coming out in spurts, and attempting to clean the original hot end tube only made it worse.

The ZT-HE is doing much better, coming out smoothly, but after about an hour into a print it gets the error "011 Extruder Temp Too High"

On successive prints that error can happen earlier or immediately upon starting the print.

I replaced a bunch of parts to try and remedy the error, including the thermocouple, extruder cable and heatbed cable, but still have the temperature problem.

Any ideas?

Evie