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After a contentious consortium meeting, where conservatives, resistant to any name change, nearly came to blows with advocates of "Open Sauce;" and, after forcible ejection of two members dressed in Goth style, who kept shouting "Open Sorcery" ...
A compromise was reached. The OSF is now the "Open Sores Foundation."
An OSF spokesperson, who wishes to remain anonymous, and is now in hiding due to alleged threats, commented:Quote: "Let's face it: we don't heal the walking wounded programmers who crawl, half-drowned, out of labyrinthine frameworks ... we make them."
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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We're the Foundation for Open Source, not the Open Source Foundation. Those are worthless.
GCS d--(d+) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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Splitters! 
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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whoops, didn't see you there before i made my comment.
Real programmers use butterflies
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BUNCHA SPLITTERS
Real programmers use butterflies
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BillWoodruff wrote: "Open Sores Foundation."
Is there no bomb in Gilead?
(Jeremiah 8, 22)
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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I know open sore software was a punchline on UserFriendly back in the day* but my Googlefu failing me.
- Twice actually. Both times at management type conferences, once where the presenter misread the title of a presentation on OSS that the geeks were giving, and at a similar conference later when they used the open sore term to attack commercial software.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
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I'm designing an object in Blender for 3D printing and it's not going so well. It's a cage-like structure, basically made up of numerous cylinders. I can't just group all these objects together and throw that at the printer. The slicer would interpret the overlapping regions of the objects as hollow areas, letting the print fall apart before it's even finished.
Blender allows to join objects, but with so many parts to join, errors accumulate with every part. There are holes in the resulting object, as well as unconnected or duplicate polygons and sooner or later the normal vectors also get messed up. All these errors confuse the slicer as well, so this leads nowhere. Trying to clean the mesh at every step of the way only slows down this degradation, but does not prevent it.
I obviously need another CAD program to get this done. It should be able to import and export .STL files, so that I don't have to start from scratch again. Any suggestions?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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FreeCad! Not sure if importing STL files will save you anytime though, FreeCad can handle them but as they're not parametrically defined they can't be used in the same way as native objects.
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I think this is currently one of the most popular products on the market for this type of stuff. I know you can export/save the cad files to a format for 3d printers, among other file formats.
Fusion 360 | 3D CAD, CAM, CAE & PCB Cloud-Based Software | Autodesk[^]
It is not free, but has a monthly subscription model.
I thought @OriginalGriff used this at one time, not sure if he still does now that they don't offer a free version anymore (trial download is free).
modified 30-Jun-21 7:44am.
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It actually is free unless you make more than 5k a year from it or something like that!
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I second Fusion360, which seems to be quite popular in the printing community
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Before going away from Blender, did you try doing a remesh in the sculpt mode using a very small voxel size on the combined object? Remeshes are really good at eliminating a lot of errors, but can take a while at small voxel sizes for large objects.
Another package to check out if you don't want to continually shell money to Autodesk is Alibre. It doesn't do STL import, but it is far easier to use than FreeCAD, and at only $150 (sale price) for the base modeler is a heck of a bargain for a perpetual license. The array options might make recreating your part relatively simple - I don't know. It has a free trial option, and is very close to SolidWorks in operation.
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I'm going to take you literally here:
CodeWraith wrote: object
And suggest purchasing ZBrush (in it's latest incarnation). Two reasons. Number one, perpetual license. Number two, I don't own it. But would like to know how good it is ... and get that information from a fully vetted CP Lounge denizen who gets bonked on the head frequently.
I'm doing a study you see ...
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I believe a full license is $895 now. Not super cheap!
Having used ZBrush and Blender, Blender's interface is so far superior to ZBrush I never want to go back. Yes, you can do anything in ZBrush. But you will spend orders of magnitude more time learning how to do so. And the mouse defaults (which can't be changed?) are ass-backwards to an Infuriating extent!
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I use OpenSCAD, it's a coding like language for creating 3d objects.
As a software developer by day, I find it rather easy, simply because I understand methods, loops, if's and objects.
To give you an idea of the language, something like this:
for(i = [0:9]) {
translate([i * 10,0,0]) cylinder(d = 5, h = 50, $fn=50);
}
would give you 10 identical 5mm wide by 50mm high cylinders, at 10mm distance apart on the x axis.
It can generate stl files for passing to the slicer. I have yet to have a problem with the slicer thinking the internals of any object is empty, and I have no problem in overlapping objects (I commonly place objects 0.1mm inside each other).
I also like that I can split complex parts into their own modules (methods) and then preview the entire printed object inside openscad, then print off each section by itself. I've found I've been able to do joins between components far better and more accurately than by simply slicing a model into two using the slicer.
To make things easier, there is also a community of people who design parts inside OpenSCAD. From simple libraries like a triangles library, to more complex libraries like gears, which can all be downloaded for free as well.
As for what I'm doing with the pieces I print, well I'm building a full sized functioning jumbo jet (boeing 747-400) simulator. I'm printing panels, controls, buttons and switches (the sort that you can't just get at your local electronics stores), and every piece has been designed with OpenSCAD.
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harvyk0 wrote: I'm building a full sized functioning jumbo jet (boeing 747-400) simulator
would love to see pics of the final product, or even an article. Sounds like fun.
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TinkerCad.
Free, simple. I use Fusion 360 occasionally but TinkerCad gets me 90% of the stuff I need to print.
It will import your STL files. I slice with Cura and rarely have an issue.
Fusion 360 has a free tier but finding on the site seems to be purposefully difficult.
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Using using STL files for anything other than export can cause problems. I use DesignCad Mechanical (free from RS Components) and always save my work in the default format, exporting to STL only before slicing. I've never found a reliable way of importing an STL file and modifying it.
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Do your design in Blender and then load the model into MeshMixer (another free software package from Autodesk). Select to "Convert to Solid". This will re-mesh the object and remove all internal faces. The mesh will be converted to triangles (no other polygons are allowed), but that isn't a problem for most slicers.
Of course, MeshMixer can do much more than that, but it sounds like this is what you need.
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I suggest OnShape, a fantastic completely web based cad.
There is the free version which, as the only limitation, makes all your documents public.
It is really well done, it is parametric and it has a lot of professional features.
It also allows you to import STL files (I've never done that), but I don't think it has any specific cleaning functions.
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