Gaps on top layer of print
I have an MMU print with text. Getting small gaps around the text on the top layer. Bottom layer fine.
Not sure how to eliminate those gaps. I imagine its a slicer problem/setting?, but at a loss what to change.
Using a .4 nozzle and .2 layer height
Thanks
RE: Gaps on top layer of print
Here's the bottom. No problem with gaps there
RE: Gaps on top layer of print
I had this same problem and scoured the 'net for solutions. I made a test sample with text about 6mm high, font HELSINKI NARROW (bold). I ran 8 different variations and 2 gave good results. This was recessed text, as you can see, 1 mm deep. My printer is a MK4. I was using PLA with a nozzle temp of 200C. I modified the following parameters in Prusa Slicer (all other settings were left as default for Generic PLA):
Advanced/Infill-perimeters overlap ("OLAP", 15% default)
Infill (15% default)
Layer thickness ("LYR", 0.20mm STR to start)
Layers and perimeters/Perimeters ("PER" 2 default and if not specified)
Ironing ("IRON", none, to start)
The variations as labelled on the photo are (not necessarily in order of trial):
1. 15% OLAP, 15% FILL, 0.15 STR - BAD, LOTS OF GAPS
2. 40% OLAP, 15% FILL, 0.2 STR - SAME AS 1
3. 80% OLAP, 15% FILL, 0.2 STR - IMPROVED BUT STILL SMALL GAPS
4. 50% OLAP, 100% FILL, 0.15 STR - WORSE THAN 3, SIMILAR TO 2
5. 50% OLAP, 15% FILL, 0.15 STR - SLIGHTLY BETTER THAN 4 (SURPRISING)
6. 50% OLAP, 15% FILL, 0.2 STR, 1 PER - PRETTY GOOD ALMOST PERFECT
7. 40% OLAP, 15% FILL, 0.2 STR, IRON - VERY GOOD - BUT OVER LARGE AREA (150MMX150MM) OF SIMILAR SIZED TEXT, THERE WAS A LOT OF STRINGING WITH THE IRONING ON. THAT COULD BE ADDRESSED BY NOZZLE TEMP, BUT ALSO TAKES MUCH LONGER
8. 50% OLAP, 15% FILL, 0.15 STR, 1 PER - PERFECT, I THINK. GO WITH 7 IF SURFACE SMOOTHNESS IS PARAMOUNT, ELSE USE THESE SETTINGS.
