foehnsturm

I set the distance to 0.05mm

from below from above

Faberdashery PLA & Scaffold Support could be removed very cleanly within 5 mins. The print shows impressive surface quality at overhangs.

BTW just finished a nice print with soluble support. Had no success with the Eames chair https://grabcad.com/library/eames-chair so far. Not directly because of dual extrusion issues, but consistently extruding just 1 mm of filament every 2 min (the legs) even with reduced idling temp and extensive priming seems to be demanding.

To me it looks like they are having an eye on this forum Anders came up with a pancake stepper, I added the combined drive wheel / gear (which is almost exactly the same they are using), thefrog made a smart housing not so far away from that one E3D is offering. Anyway that's ok. With 1.75 mm this design should work with a pancake, with 3 mm there are serious doubts. With the bulky and heavy stepper they use, you kill some of its benefits. But 3D printing currently is its SUV period (compared to cars) ... It's all about (feeder) power, no matter if you can use it

I recently did some first tests with E3D scaffold. While it printed considerable better than PVA I still had adhesion problems between the support material and the printing material when a support structure starts on top of a printed surface. I want to investigate into this a little more the next days.

It depends on your timescale. My album here shows some examples for what's possible. I'm working on making this available. About when and in what way you should ask me in a month or two ... What kind of dual prints would you like to do?

... that's why he's waiting for that boat now. WoodFill & BronzeFill, nozzle 0.6 mm & 0,4 mm, worked surprisingly well with the heap of retractions and tiny pillars

Printing with 0.4 and 0.6 mm nozzles right now. And I would like to use different layer heights but this setting is not available per object. @nallath: Are different layer heights per object prevented by the slicer algorithm in general or did you just decide not to offer it? (S3D handles varying heights)

Just started to play around with some settings. Of course the per object settings concept is one of the most interesting features. PLA & BronzeFill, per object settings for extruder and fuzzy skin.

With a new clip and after some polishing

Well, they're stressing the ease of use, the "Ultimaker experience" as a core asset. And dual extrusion as commonly known, which requires a lot of tinkering with oozing, prime towers etc. etc. doesn't go with it. However that may be, I suspect that there will be new options for dual extrusion this year in some way or another.

@macua85 Unfortunately not, still working on the other project.

Faberdashery

Wall thickness just 0.8 mm.

tinkergnome helped me with a json file. This is for the UM 2+ but I think only the first lines need to be changed for an UMO. I drop it in the machines folder, restart cura and select the new printer. Then the additional extruder settings are available. { "version": 1, "id": "ultimaker2plus_dual“, "name": "Ultimaker 2+ Dual“,"manufacturer": "Ultimaker","author": "Ultimaker", "file_formats": "text/x-gcode", "inherits": "ultimaker2plus.json", "visible": true, "machine_settings": { "machine_use_extruder_offset_to_offset_coords": { "default": false }, "machine_extruder_count": { "default": 2 }, "machine_nozzle_offset_x": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_nozzle_offset_y": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_extruder_start_code": { "default": "", "SEE_machine_extruder_trains": true }, "machine_extruder_start_pos_abs": { "default": false, "SEE_machine_extruder_trains": true }, "machine_extruder_start_pos_x": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_extruder_start_pos_y": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_extruder_end_pos_abs": { "default": false, "SEE_machine_extruder_trains": true }, "machine_extruder_end_pos_x": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_extruder_end_pos_y": { "default": 0, "SEE_machine_extruder_trains": true }, "machine_extruder_end_code": { "default": "", "SEE_machine_extruder_trains": true } }, "categories": { "dual": { "label": "Dual Extrusion", "visible": true, "always_visible": true, "icon": "category_dual", "settings": { "extruder_nr": { "label": "Extruder", "description": "The extruder train used for printing. This is used in multi-extrusion.", "type": "int", "default": 0, "min_value": "0", "max_value": "16", "always_visible": true, "children": { "adhesion_extruder_nr": { "label": "Platform Adhesion Extruder", "description": "The extruder train to use for printing the skirt/brim/raft. This is used in multi-extrusion.", "type": "int", "default": 0, "min_value": "0", "max_value": "16", "global_only": true }, "support_extruder_nr": { "label": "Support Extruder", "description": "The extruder train to use for printing the support. This is used in multi-extrusion.", "type": "int", "default": 0, "min_value": "0", "max_value": "16", "global_only": true }, "support_extruder_nr_layer_0": { "label": "First Layer Support Extruder", "description": "The extruder train to use for printing the first layer of support. This is used in multi-extrusion.", "type": "int", "default": 0, "min_value": "0", "max_value": "16", "inherit_function": "support_extruder_nr", "global_only": true }, "support_roof_extruder_nr": { "label": "Support Roof Extruder", "description": "The extruder train to use for printing the roof of the support. This is used in multi-extrusion.", "type": "int", "default": 0, "min_value": "0", "max_value": "16", "inherit_function": "support_extruder_nr", "enabled": "support_roof_enable", "global_only": true } } } } } }}

Right now I've to emphasize dirty. Until this morning I didn't know a thing about Python. And, honestly, the way it uses whitespace for syntax almost drove me crazy. I just took the PauseAt... plugin and modified it. The code it produces is kinda experimental as it leaves tool changing with priming and retraction and temperature management completely to the firmware.

Well I can confirm dual extrusion slicing basically works But I had to write a quick and dirty plugin to change the code sequence on a tool change. Cura generates something like ...G92 E0T1M109 S210.000G10...G11G1 ... and I want this plain and simple like G92 E0G10T1G11G1 ... It's very likely that I'm missing some settings to make Cura do it more like I want (e.g. issue a retract before a tool change)

UM2+ and 2.85 mm Filaflex (green) and Flexifil (black)

Well, some less spectacular examples here. With some patience many things go, if they don't rely too much on retractions. ok, the last one needs a dual extrusion mod

I can confirm the warping / bed adhesion issue. Without brim edges are likely to curl up. It's also a little more waxy than PLA, not as much as PLA HT for instance but you have to be careful with a cutter.

I'm using this for dual extrusion prints. So it's kinda optimized for the hotends switching between printing temp and idle temp with usually 20°C to 40°C difference. However the settings are not perfect if you want to cool down to a certain temp. If I set target temp to 90°C for an atomic pull the heater will start to kick in at 105°C. I have to lower to 80°C to reach 90° quickly.

Overhangs are ok. Surface is a little rough even on vertical walls. The adjacent PVA affects the PLA surface. Should use an offset shell operation next time before subtracting the part, so there's some gap in between.

It takes some time but it mostly washes off by itself. But hidden cavities are difficult to clean completely.

No real solution yet. So far: Forget slicer created supports. Just make up a simple box shape and do a bolean subtract with the part. Use the remaining as support. PVA doesn't stick to PLA. So, if you print PVA on top of a PLA surface make sure it isn't an island but instead connected to some PVA structure nearby. It will still curl up and need some millimeters height to recover. I don't use stuff like priming towers. In this case there had to be to separate towers because of the poor adhesion I think.