Deleting that round surface made these arc edges go away (still don't know edge of what these were). Similar thing for rectangles.

Now trying to create surface in place of deleted rectangles:

http://ixion.pld-linux.org/~arekm/blend-fail.avi
http://ixion.pld-linux.org/~arekm/blend-fail.3dm

Why fails and how to make surface there properly?

Actually I see no error and no result.

(noticed weird thing where error "Calculation failed" immediately disappears and I wasn't sure what is going on until noticed that text was actyually appearing but only for fraction of a second. Maybe this time it also is shown for a fraction of a second but didn't notice that on saved avi)

Hi arekm, re: get rid of those edges

This edge here is the "seam edge" of the original cylinder, it's not really an error that you have to get rid of, you can just ignore it:




If you really really want to get rid of it for some reason, you would need to rebuild those faces using a non-segmented curve as the source for the construction. The easiest way to do that would be to delete those faces, then select the 2 top edges here:


And then merge those together into a single edge using the "Merge" command: http://moi3d.com/3.0/docs/moi_command_reference10.htm#merge . After that there will be one single edge there and you can then extrude that down to make a new single surface in that area. But it's not necessary to do this, it's easiest to just not worry about that particular edge. Anytime you have a closed surface like a cylinder, there is an edge at the "seam" of the cylinder where the start of the surface touches the end edge of the surface. Each surface in MoI is kind of like a sheet of rubber paper a closed surface is made by rolling up the sheet of paper so opposite sides touch each other, that's the "seam edge" there. It's not an error really, it's just how closed surfaces work. Sometimes if it's causing problems you can try to rotate your closed surface so the seam edge is not right in the particular working area.


The other one you are asking about seems to be a kind of slivery hole that got cut in the bottom of the piece:






That can be removed by doing an "untrim" which is described here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=444.4

Zoom in a bit near the middle of those edges looking from the underneath of your object, then select the 4 edges that make it up, then push Delete and that trimming boundary will be removed.

You maybe had cut there twice with 2 very slightly different cutting curves or something like that leaving a kind of thin slivery hole there.

- Michael

Thanks, managed to finish this. I like moi3d more and more.

Result, very simple thing: http://www.thingiverse.com/thing:867528 (blue models there).

Another "basics" question. Could "save" be modified (script?) to prevent user from loosing data by also always saving in 3dm file?

Scenario:
- do some model
- save as 3dm
- do more work, click save button
- save as stl for test print or preview in 3d slicer for example
- do more work, click save
- close program... whoops I just lost part of work since it got saved as stl only.

I like different approach where save always saves in native program format (3dm in this case) and "export" exports to foreign file formats (possibly formats that loose information like stl). That way by clicking "save" work is never lost (since best format is used for saving) regardless if export/saving in other file formats was done in mean time.

My current workaround is to save file twice everytime I want to save - which means ton of clicking, confirming overwriting and that every time I'm saving progress (which is often). Pain.

How others are dealing with this?

Does IncrementalSave work, after ...3dm file is named?

Hi arekm, there is already a mechanism in place to prevent what you are describing from happening - it's why the current file name can only be set when you save to 3DM format.

You gave these steps here:

> Scenario:
> - do some model
> - save as 3dm
> - do more work, click save button
> - save as stl for test print or preview in 3d slicer for example
> - do more work, click save
> - close program... whoops I just lost part of work since it got saved as stl only.


If you repeat these exact steps you should find that when you do the "Save As" to STL format, it does not change the name of the currently active 3DM file, the current open 3DM file will remain the same as before. So because of that when you do the next save after that, that next save is saving your full work to 3DM format.

Basically any time you do a save, if it's not to 3DM format it will not set the active file name. That means that when you later on do a Save to save the current file, it will be the full 3DM file that you will be saving to, not some other format that may not hold your full data.

The reason why it does that is to specifically avoid the type of problem that you are worried about.


> My current workaround is to save file twice everytime I want to save - which means ton of clicking,
> confirming overwriting and that every time I'm saving progress (which is often). Pain.

None of this is necessary - if you have opened a 3DM file and you do a "Save", it will save that current active 3DM file and it does not matter if you have done any file saves to other formats before that.


> How others are dealing with this?

You just hit "Save" and it saves your full data to the active 3DM file.


- Michael