Questions tagged [3d-models]

Use this tag for questions about 3D models.

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13
votes
7answers
15k views

What kinds of gaps/tolerances should I use when designing pieces that fit together?

Let's say I'm modeling a simple box with a lid. Just as an example, we'll say the outer edge along the top of the box is 50mm x 50mm. With 3D modeling software, it's easy to build a lid for this box ...
6
votes
1answer
2k views

Easy way to refine a 3D-model for 3D printing by removing internal geometry

I have been given a proprietary 3D file of a real world item from an item manufacturer with the obligations not to hand it out to anyone to produce a print in a low single digit percentge scale of the ...
2
votes
3answers
1k views

Estimating printing time from Cura

I know that the actual printing time is longer than the time estimated by Cura, due to acceleration and jerk factor. However, I have printed a small pyramid for which Cura estimates 4.0 minutes, ...
7
votes
4answers
9k views

Can a 3D model of a copyrighted work be rendered legally without infringement?

I know this is still gray territory and it is asked so many times within the 3D printing and maker community but I'm curious about the limits of 3D models and were it touches on Free Use and ...
3
votes
2answers
1k views

Using multiple infill types within one model [duplicate]

When modelling for 3D printing, can I distinguish somehow the type of infill in various areas of the model? Say there may be some areas in the model where I want 100% infill (maximum strength) but ...
10
votes
5answers
2k views

What are some good FOSS or free tools for editing STL files for 3D Printing?

I'd like to customize and modify some parts on Thingiverse, beyond just simple scaling for 3D printing. I've been looking for some tools that convert the STL files into something that is easily ...
34
votes
7answers
18k views

Will 3D Printed Dice Be Fair?

Is there anything to the process of 3D printing that might make the dice unfair/land on a specific side more frequently? Or will any imperfections be negligible, thus making the dice fair? I'm more ...
15
votes
4answers
7k views

Do 3D printers really reach 50 micron (0.05 mm) accuracy?

I've always been wondering about the actual accuracy of 3D printing devices. When looking for the perfect machine to buy, I looked at the speed, price, filaments supported etc, but also accuracy. I ...
5
votes
5answers
5k views

Conversion of DICOM files to STL files

Good morning everyone, I am developing a consulting job in a clinic of dental CT scans. This work involves the development of administrative software, and preparing a routine for conversion of ...
8
votes
3answers
3k views

Are self intersecting meshes dirty from a 3D printing perspective?

I have never much cared about self intersecting meshes when slicing with Cura. Geometry like the one below are often practical. I for instance add lots of rivets that self intersect with the base ...
6
votes
2answers
15k views

How to make walls thicker using meshmixer or meshlab

I have been working at converting game files into 3d files that can be printed, but many of the models have very thin or walls. I was wondering if there was a way to increase the thickness of the ...
7
votes
1answer
640 views

FDM layer bonding strength

I'm looking for some advice, rules of thumb, or models for how to design parts for layer bonding strength. As an example part, lets assume a circular beam in bending (tall cylinder). Depending on how ...
6
votes
2answers
4k views

Why is the printed object smaller than original model?

I am printing a small cylinder, but when the object is finished, it's smaller than the measures I used when create the model. I used thincerkad to make a simple model, the measures are: width: 90 mm ...
5
votes
2answers
165 views

Which software do I need to start print something?

I'm still new to 3D printing and I want to print something. I expect that I'll mess it up since I find nothing to adjust it but it is now laying around for 4 months and I'm sick of it. So my question ...
4
votes
3answers
138 views

How can I get a 3D model from a bunch of 2D photos?

I am a physics graduate student and I want to create some 3D models for my crystal samples. We have an X-ray diffractometer in our lab. It comes with a goniometer inside it, so basically I can take as ...
4
votes
1answer
3k views

Slicer that exports vectors or pics for every slice

For a large scale project, I need a slicer which gives me the slices as image (BMP or vector). I have a 3d model and want to assemble it manually using large printouts on cardboard. For this I need ...
3
votes
1answer
4k views

Is it possible to convert a Las /Laz file into an STL or OBJ file?

I would like to know if there is any tool/library (preferably python based) that could be used in parsing a Laz file to extract info that is normally found in 3d object files such as vertices. Which ...
3
votes
1answer
2k views

How to open .max files

I'm new to this forum. I need help opening a .max file a friend sent me. The thing is, I dont have Alias Maya. Well, Alias Maya that works anyway. Is there any other file openers that I can use? Or ...
2
votes
1answer
2k views

Do 3D Printers Prefer Particular Topology?

Do 3D printers prefer particular topology? In case I'm not using the word quite right, I'm specifically wondering if I should make the faces in my models: triangles quads n-gons..
2
votes
2answers
2k views

Black surface in Meshmixer

I was working on a model today and I need to make the black surface into a normal surface so that the ship's cockpit is solid. I am unable to select the black surface. I tried using the flip normals ...
2
votes
1answer
70 views

Can I use a 2D photo to get a 3D printing model? [closed]

Can I use a 2D photo to get a 3D printing model that gives a good result?
1
vote
1answer
611 views

How to split a model in SketchUp for printing

I have a file I want to print, but the problem is that the dimensions that came with the model are just too big to print. I used the Tape Measure Tool on SketchUp, and it came in at a whooping 5.56 ...