I'm trying to understand what's happening here. I have 2 different Process profiles, one was supplied by download by my printer's manufacturer bespoke for Simplify3D, the other is a default Simplify3D profile generated by the software for the Printer, but I have gone parameter-by-parameter through the tabs of the advanced settings for each profile and verified each profile's settings are identical to each other to try and figure out which setting caused this behavior, where instead of the top layer printing before the ironing pass happens, they flipped around and the ironing pass was happening over thin air where the layer should have been first, and then the layer was going down over ironing poops that couldn't fuse to anything.
The settings are below. What I found was, all of these settings can be identical in each profile, but it was the underlined speed % for Solid Infill Speed that seems to be causing this flip. When I set the speed to 70%, the layer irons as anticipated, when I set it to 50%, the layer malfunctions as described. Even if I set the default top level speed to an unreasonably high value like 80,000 mm/min or set it to an unreasonably low value like 800 mm/min, the ironing layer still operates backward to what it should, when I have the Solid Infill Speed set eg. to 50%.
I believe this is a bug? Or what correlation with my other settings would cause this behavior to occur? Thanks.
Standard Quality
Tool 0
0.4 mm
0.85 Extrusion Multiplier, Auto width
Retraction on
4 mm distance
-0.05 mm restart
1.00 mm vertical lift
24000 mm/min
No coast
No wipe
Primary Extruder layers
0.2 mm layers
3 top solid layers
2 bottom " "
2 outline perimeters
No vase mode
No adaptive heights
No dimensional adjustment
First layer units percentage
1st layer 150% height, 100% width, 50% speed
Align start points at 0 X 0 Y mm
Restrict start
Outside-in
Minimize time
No print infill before perimeters
Brim on Primary, 1 layer, 5mm offset, 2 outlines
No raft
No prime pillar
No ooze shield
Infill on Primary
Rectilinear, 0 degrees, 20% fill, 100% width, combined every 1 layers, 35% overlap, 1.00 mm minimum
3 dense internal layers at 50% fill
No solid diaphragms
External Infill Rectilinear, 0 deg's, 25 mm^2 threshold, 1 mm extra expansion, monotonic
Top layer 1mm extra expansion, 100%, no override
Iron top layers settings: 50%, 25%, 20%, 40%
No supports in job
250C/135C
0 fan speed
Increase speed for quick layers: 5.5 s, 15s, 65%
4000 mm/min speed. Percentages in order: 60/80/50/50/100/70
XY 20000 mm/min
Z 10000 mm/min
time estimation irrelevant
Reduce for quick layers: 4 s 10%
Reduce for short perimeters: 80 mm 50%
Sticky parameters
5D firmware
Allow zeroing
Include thumbnails
Flip displayed axis direction of Y
Global Z offset -0.1 mm
Identical start and stop scripts
No bridging regions in part
No tool changes
Identical filament properties
Thin wall perimeters only, gap fill allowed, 50%
single extrusions 0.5mm, 40%, 150%, 0.2 mm
Close and heal
Alternate fill
Force retraction between layers
Force "" top "
Only lift on vertical top layers
Perform retraction during wipe
Wipe all features
Modify travel: 3.0
