ahoeben

A 3.3.1 appimage can be downloaded from http://software.ultimaker.com

Sounds like an error in that script. Have you asked for support by the author of the script?

That sounds exactly like a bug in the 3.3 beta. Are you sure you are using the “stable” version? There’s a 3.3.1 version too.

With the Support Blocker tool selected, clicking a support blocker cube will remove it. With the Move tool selected, you can move it around.

In the top right corner of the viewport, switch from Solid view to Layer view. Now check the difference between "Skirt", "Brim" and "Raft" adhesion types. The Layer view shows what will actually be printed (or it will, after you press "Prepare" in the lower right corner).

What new scripts? Where did you find them? Do the logs show any errors or warnings about the scripts?

With your object enabled, select the Support Eraser tool. Now click on an area of the object which you don't want to be supported. A cube will appear on that part of the model. Using the regular translate and scale tools you can move that cube around if it did not end up in the expected area you clicked.

This is not possible in Cura, without much more development effort. The "mold" never exists as a model in Cura, but is produced layer by layer during slicing. There are other tools much more suitable for what you want to do, eg Meshmixer.

The setting in Custom mode is named "Gradual Infill Steps". The checkbox in Recommended mode flips that setting between 0 and 5.

See the Printers pane of the preferences, and press "Machine Settings". You can enter the bed dimensions there. If Cura does not detect your printer, there is not much you can do about it at this point. That layer is called a "brim". It helps making sure your print sticks to the bed. If you want to try printing without the brim, you can turn of the option to print it in Cura. See the Build Plate Adhesion option.

If you select multiple models, right click and select Merge models, they will be combined into a group sharing their original origin. You can select/manipulate individual models inside a group by control-clicking. Yes, it would be nice if modifier-meshes did not drop to the buildplate.

You know what? I don't know. These are settings that are already sent to CuraEngine, but normally they are only settable in .def.json files. I don't know exactly how they affect the gcode that is generated, and if firmware overrides these settings. I assume that a number of these settings making sure that they match what is set in the firmware will lead to more accurate time estimations. Edit: thinking about it that way means that for at least the settings that affect time estimations, it would mean that the firmware settings overrule what is set in the sidebar. All that the plugin does is making already available settings that are normally hidden settable in the sidebar. Realize there's a reason these settings are normally hidden; using them can have unexpected results.

I have created a nifty plugin for Cura that adds a new category "Printer Settings" to the sidebar. This category contains many of the machine settings that are normally not available from the GUI eg the Nozzle Size, and settings that could make time estimates more accurate. Note: Changes made in the sidebar override values set in the machine definition or in the chosen nozzle size variant, and end up in quality profiles. This may have unexpected results. It is not recommended to use this plugin unless you understand the implications. Like other settings, you don't have to make them all visible or even understand what they do. I encourage you to use the Search... on top of the sidebar to find the setting you need. I have submitted the plugin for availability in the Plugin Browser, but until it is available there you can download it here: http://files.fieldofview.com/temp/v4/PrinterSettingsPlugin.curaplugin Edit: since posting this, I have fixed an issue where the new settings have an arbitrary order. They are now sorted in a more logical order.

Tell 3dprintlab about it. They should update their instructions (or fix their models)

Note that Sigma created their own version of Cura to support IDEX features, and that not all of those features are available in Ultimaker Cura

The model is not well-suited for 3d printing (yes, I know, they are specifically sold for that purpose) Use the search on top of the Custom sidebar to change the following settings: Union overlapping volumes: uncheckedMerged meshes overlap: 0

Check that you have not disabled the plugins that provide this functionality. In Cura 3.3, that's done through Plugins -> Browse Plugins... -> Manage. Specifically you are looking for the Post Processing and Changelog plugins in that dialog.

Support mesh and anti overhang mesh are settings that make the Mesh Type in Per Model Settings work (print as support and don’t create support for overlap with models). They have no function in the sidebar.

The default setting for automatic slicing has changed from on to off. Perhaps that’s what throwing you off, you have to press the “Prepare” button.

More people have reported it, but sofar I have not been able to reproduce it, let alone find a fix. In 3.3 the network printing was rewritten, and the camera handling is part of that. There are reports that some UM3 users have the same issue.

Try setting it to 0.4001 or something like that. I think the issue is with setting it to exactly 0.4

Check the model in X-ray view, it is probably not watertight/manifold. You can try searching for the "Union overlapping volumes" setting in the sidebar (use that Search... box), and turning it off.

You are not alone in this, but this issue is proving hard to reproduce for the developers: https://github.com/Ultimaker/Cura/issues/2226

This is a known issue, without a workaround currently: https://github.com/Ultimaker/Cura/issues/2617

The UMO, UMO+, UM2 and UM2+ are all open source, with released BOM and parts schematics. The UM3 is nowhere near "legacy" status.