PrusaSlicer 1.36.0

Slic3r Prusa Edition Slic3r 1.36.0 - Prusa Edition

Summary:

This is the Slic3r 1.36.0 - Prusa Edition release. This is a beta release, improving the multi material printing, supports, and fixing many other issues.

When using this release of Slic3r with the Original Prusa i3 MK2 printer, the following configuration files shall be used: github.com/prusa3d/Slic3r-settings ↗

Cooling logic for multi-material printing

Until this release, Slic3r did not correctly support bed temperature and cooling profiles for multi-material printers. Namely, the following filament specific configuration values were errorneously applied exclusively from the first extruder profile:

• bed_temperature
• bridgefanspeed
• cooling
• disablefanfirst_layers
• fanalwayson
• fanbelowlayer_time
• firstlayerbed_temperature
• maxfanspeed
• minfanspeed
• minprintspeed
• slowdownbelowlayer_time

Starting with this release, the cooling profile values are considered over all extruders active during the print. This is very important for printing PLA with soluble PVA supports, as PVA does not stick together with the fan active, but we certainly want the fan to be active for PLA. Also the bed temperature is now set from the profile associated with the first printing extruder, not with the first machine extruder #157.

Thanks to @alexrj, the cooling logic has been extended to slow down the external perimeters as a last resort, if slowing down the rest of the print is not sufficient. Also the non-printing times and the time over the wipe tower are taken into account by the cooling logic.

Supports

• Fix of soluble support interface / non-soluble support base: The non-soluble support base with the "don't care" extruder assigned will now preferably be printed with a non-soluble material to minimise consumption of an expensive soluble filament, if this is possible without a tool change. For this feature to work, the soluble filament has to have the attribute "soluble" set at the "Avanced" page.
• At the "Object Settings" dialog, one may assign an extruder to an object and to object volumes. When assigning a default extruder for an object, starting with this release, this object extruder will no more override the extruders assigned to supports in the print profile, as a print global "don't care" extruder choice is always preferable for the non-soluble suports, and the soluble supports shall be printed with a soluble material all the time.
• Bugfix of "Overhang threshold" and "Enforce support" don't work #273.
• Fixed "Too much support generated for buildplate only supports" #359.
• Bugfix of "Supports: Overhang threshold not utilized after 1.34.1" #360.

This release contains the following new features:

• Loading of multi-part objects as a bunch of STLs for a multi-material printer, either by the "Add..." button or by a drag & drop. For a multi-material printer, Slic3r will now ask, whether the multiple STLs shall be merged into a single multi-material object.
• "XY size Compensation for first layer" aka "elefant foot compensation". The first layer is shrunk a bit to correct for the first layer squish #190.
• Implemented "Suggestion for Preview View Change". Use left / right keys to switch between the low / high layer scroll bars on the 3d preview screen #415.

This release contains the following bug fixes:

• Fix of changing the order of volumes of a multi-volume part in the object dialog. The volumes were not refreshed correctly after they were moved around.
• Changed layout of the Tab page to accomodate a wider profile selection combo box #194, #377.
• Fix of "Modifier meshes don't work for speed modifications" #298.
• Fixed the objects jumping on the print bed after splitting an object with multiple bodies into separate pieces. This will likely fix #309.
• Fixed a Repetier Host compatibility, broken in 1.35.5 by removing the --gui-mode option. This option has been reverted for compatiblity reasons, though the option is inactive. #363
• Fix of wide brim lines overlapping each other #373.
• Spiral vase is now enabled for sequential printing alexrj#4043, thanks to @lordofhyphens.
• Fix of "Unicode char like for example "ł" crush app when used in profile name" #388.
• Fixed a regression after Slic3r 1.34.1.24: "Not lifting extruder after printing complete individual objects" #400.
• Fixed a regression after Slic3r 1.35.5.16, where the fan was started from the first layer, not respecting the "Disable fan for the first n layers" value #418.
• Fixed cutting of upscaled objects #419.
• Raised a constraint for the "Wipe Tower" option, so Slic3r will allow printing with nozzle diameters different from 0.4 mm with single extruder printers, even if the "Wipe Tower" option is enabled #426.