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[Bug]: F.O.A. Jolla staff ~ Error in ; 'JOLLA_THE_OTHER_HALF_101213.stl' file in Netfabb-Basic. [not relevant]

asked 2014-02-06 03:24:27 +0300

Spam Hunter gravatar image

updated 2014-02-13 22:14:53 +0300

eric gravatar image

I only have Netfabb Basic for viewing and (limited) remodelling abilities. The main view when Netfabb is first opened, shows in the bottom right hand corner of the main view, a 'red triangle in an exclamation mark', which Netfabb indicates that the model is not 'watertight' (holes in the mesh). I'm no expert with 3d software or .stl files and finding good freeware is not easy, so I'm stuck with Netfabb for now, but is the model provided from jolla.com possibly faulty or is Netfabb the problem?

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The question has been closed for the following reason "question is not relevant or outdated" by Spam Hunter
close date 2018-07-15 16:08:54.224441

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Hi. I tried both files in FreeCAD. The step so far was ok. I also had trouble with the stl. A few wrong oriented facets. Some double. I still have an issue with one "abnormal" facet. No chance to repair. Will give Meshlab a try. I don't want to put the blame on jolla/Catia maybe also FreeCAD import is not perfect. Probably someone else can answer/comment and confirm?

je ( 2014-02-06 09:30:38 +0300 )edit

Seems fine in Blender. STL import is supported by default (use File -> Import -> STL). For 3D print tools go to File -> User preferences -> Addons (search for "print").

If you never used Blender - hold middle mouse button to rotate perspective; rotate wheel to zoom.

Nux ( 2014-02-06 14:48:49 +0300 )edit

@je, Hi, thanks for replying. Netfabb Basic allows me to repair the file, but that isn't my point ultimately. The file appears to be faulty, so an answer from someone at Jolla would be what I'm seeking. :)

Spam Hunter ( 2014-02-07 23:41:31 +0300 )edit

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answered 2014-02-06 17:05:09 +0300

Nux gravatar image

updated 2014-02-06 17:36:47 +0300

OK. I think I found the problem. Here is a fixed version and some info.: https://github.com/Eccenux/Jolla-TOH-Developer-Kit/

Note that Jolla license applies.

Edit: Keep in mind that this TOH model is still probably not suitable for home 3D printing. There is a lot of hanging parts which cannot be printed with FDM printers (most popular model). The bottom surface is not flat which might not be a problem in practice (it will just be printed as flat), but other parts will not print right. I think the most important part would be lock insets - the edge is very sharp there and they should be fitted perfectly. There's also seem to be too much detail which will just not be printed on models available for home users.

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Thanks Nux, however, I would still maintain that Jolla should take a look and clarify whether or not there is a problem with their file. I will, however, grab the file from the link you gave and check it out, thanks for that. I understand what you say about the limitations or FDM printers, but having seen the printer in action (mendel90) I have seen it laying 'support material' for certain shapes. I have noticed that the majority of the TOH cover is flat and I don't mind if it is printed flat, as long as it 'snaps' onto the phone nicely. The first few prints I did were with PLA, we're using ABS this time, in colour! :) Level of detail is obtainable by reducing the print speed, also, this time, I will be having a go at using acetone for smoothing the TOH, it's all for fun ultimately and could yield good results!

Spam Hunter ( 2014-02-07 23:52:54 +0300 )edit

I think you should add supporting columns for the most overhanging parts and just clip those columns after printing. And use sandpaper to smooth things down. I don't think you can do that without touching the model, but for now I only know the theory behind it and not had time to time practice ;-). Anyway, have a look at this tutorial on hanging parts: http://cubify.com/blog/tuesday-tips-removing-supports/

Nux ( 2014-02-08 02:16:27 +0300 )edit

@Nux - The software that controls the printer deals with support materials, I think it may be written into the model. It's all for fun in the long run, I already have 2 covers (red and white), so anything more than them, I'm happy to try and make, ultimately, it only costs pennies to try these things out. Once my buddy who owns the printer, is over his flu, I will be printing like crazy! :)

Spam Hunter ( 2014-02-10 19:14:24 +0300 )edit

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Asked: 2014-02-06 03:24:27 +0300

Seen: 240 times

Last updated: Feb 06 '14