Questions tagged [3d-models]

Use this tag for questions about 3D models.

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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 ...
16
votes
4answers
37k views

Tool to measure in STL files

I want to create parts for a 3D printer using OpenSCAD. Having some STL files from the vendor, but nothing else (no technical drawing, no CAD files). Does anybody knows a free tool, that allows me to ...
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 ...
13
votes
7answers
16k 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 ...
13
votes
2answers
3k views

How to upload my works to Thingiverse without making my real name public

I want to upload some of my works to Thingiverse without making my real name public (displaying it on the profile page). I think it is OK to register my name to the site unless the make it public, ...
11
votes
3answers
12k views

Grease for PLA sprocket

I am attempting to construct model tank tracks with accompanying wheels and sprockets. All parts will be printed in PLA. The tracks will be driven by electric motors. What would be a suitable grease ...
11
votes
3answers
1k views

Can toothbrush bristles be printed?

Is it possible to print toothbrush bristles using a common FDM 3D printer? I am particularly interested in the width of bristles, closeness together of each bristle, and the flexibility of each ...
11
votes
2answers
477 views

3D printing with blender

I have an object that I want to print in 3D. But I have a few questions about it. What are the things that I have to watch out for when 3D printing? I know how to change the metric size etc. Some ...
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 ...
10
votes
2answers
2k views

How to 3D Print 5-pointed star object that doesn't have flat bottom and hole in the middle?

I'm new to 3D Printing. I've created this star from Blender3d. As far as I know, most printers require a flat bottom. As you can see (blue line is Z-axis, red line is X-axis, green line Y-axis), the ...
8
votes
4answers
13k views

Export STL as ASCII or binary?

When go to export a model using Fusion 360 or Meshmixer, I see that there are two options. Could the final model be affected by the format chosen at the time of saving?
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 ...
8
votes
3answers
2k views

How to determine shell thickness for parts?

Let's say you're printing a container or some other object with no infill. What's a good rule of thumb for how thick to make the outside? I'm looking for something along the lines of millimeters thick ...
8
votes
1answer
2k views

How to print a two color part with only one extruder

I'm planning my first project. I want to print an iPhone case with a flush letter on the back, but I want the letter in a different color (single extruder printer). The thing is the two colors will be ...
8
votes
6answers
21k views

What is the easiest way to modify/resize an object inside a STL file?

I have this GoPro mount for a quadcopter as STL file. It looks as follows. How do I modify it so that it is wider and longer by a few millimeters but the screw holes stay the exact same size? ...
8
votes
1answer
275 views

Take a detailed model and make it suitable for 3D printing?

I have a model I would like to print, specifically it is a free-for-personal-use model of a car, complete with interior. I would like to print it, but it is unprintable. I have tried to fix it in ...
8
votes
1answer
2k views

How to carve a hollow cylinder along the curved surface in Fusion 360

Let me start with a disclaimer: I'm new to 3D design, to design in general and specifically brand new to Fusion 360. This is my first project. I started by creating a hollow cylinder, with the one ...
7
votes
4answers
470 views

Is 3D printing a good way to save money?

If you already have a 3D printer, would you say that you have saved money on buying the printer, buying models and then printing the models, compared to buying something alike in retail? Would you ...
7
votes
3answers
9k views

Split/edit part in FreeCAD?

I'm trying to modify some parts on this thing. I'm kind of new to dealing with the modeling aspects of this. I am attempting to widen the part essentially 3mm. This would involve modifying the chain ...
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 ...
7
votes
1answer
161 views

Are there any services that offer 3D scanning?

So, have a plastic car part I want to duplicate because the driver side part is broken (I have the passenger side part) and It isn't sold anymore. It's a small piece that would be an excellent ...
7
votes
1answer
948 views

Extruding a (wall?) in Fusion 360?

I have a model that has walls with a volume of 0.00mm that I want to extrude so I can 3D Print it. I was unable to convert it into a normal body in order to extrude it. In addition I was unable to ...
7
votes
1answer
641 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 ...
7
votes
1answer
239 views

How can I make this rounded enclosure feasible to print?

TL;DR - What needs to be done to the following model to ensure a successful print? As part of a father-son project we're trying to make an enclosure for a digital clock. The idea is to make a 3D ...
7
votes
1answer
317 views

3D printer calibration test STLs?

Is there any well-known test set of 3D models that I can print out which will clearly show up the problems I need to work out in calibrating my 3D printer? Ideally, it would be either one or multiple ...
7
votes
3answers
523 views

Simulation tool software for 4D Printing

In 4D printing technology or by means usage of Shape-memory alloy (non-metal, iron based, copper based or NiTi material) for 3D printing. Is there any software simulation tool which I can use to ...
7
votes
1answer
5k views

Using Kinect 360 as 3D Scanner

I would like to use my old Xbox 360 Kinect as a scanner for 3D modeling and (hopefully) printing a few busts of friends/family members; however, my efforts have failed in each direction that I have ...
7
votes
2answers
195 views

Are there many assembly type 3D printers?

I am wondering if anyone here knows of any 3D printers that work by assembling models from parts instead of extruding or setting material. The closest I have found is the pixelstone but it appears to ...
6
votes
2answers
4k views

Should I include fillets on my 3d printed parts?

A fillet is like a rounded corner but on the inside of the corner. Does it make a difference (structurally) to use fillets on a 3d printed part?
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 ...
6
votes
3answers
595 views

Best practices to fix a threaded nut inside a print

I'm trying to connect two 3D printed parts (ABS) together with a threaded connection. Thus, I need to fix a threaded metal nut (M4) inside a corresponding slot which I've implemented in the design. ...
6
votes
4answers
444 views

Is this model feasible to print?

I have a 3D model that I'd like to print. This is my first project, so I'm trying to decide if I'm getting in over my head. Here's the model rendered with Blender: If I throw it at a commercial ...
6
votes
4answers
464 views

Printing coarse threads

I have a makerbot, and am using their slicer program. The part I am printing has an extremely coarse thread, 5 threads per inch with a 2 mm thread height. The thread face is at a 30 degree angle (15 ...
6
votes
3answers
574 views

Is 3D printing feasible for a coaxial rotational joint?

In a design that I need to prototype, I have a coaxial, rotational joint between 2 cylinders connected to another coaxial rotational joint between 2 cylinders by a hinge. I have attached the ...
6
votes
3answers
225 views

How does a layman get a 3D printed replacement part?

A plastic gear of an older DVD player broke. I always read about being 3D printing a "repair revolution". So I looked for a template to give to some printing service, but I found none (and nothing ...
6
votes
2answers
239 views

What should I think about if I want to design something modular?

For a while now, I have been thinking about designing things such as small bedside tables, game/dvd/bluray racks for 3d printing. I've always thought that making them modular would be a good way to go ...
6
votes
1answer
560 views

Building a pivot linkage for servo steering with 3d printed parts.

This question is more of a mechanical rather than 3d printing, but I am assuming 3d Printing communty have already come accross this issue, therefore this is a good place to ask. I am building a ...
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 ...
6
votes
3answers
7k views

Point Cloud to STL File

I had a friend request that I print out the Bathymetry of Lake Michigan as a gift for her PhD adviser. I went to NOAA and the site had a few files for the Bathymetry of Lake Michigan. Files and types ...
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 ...
5
votes
3answers
763 views

Strange walls/faces when importing self made model from Blender to Cura 3

I wanted to create a coin stacking device similar to this one: https://www.thingiverse.com/thing:499177 But I wanted to only 3 coins, 5c, 2c, and 1c. Unfortunately the STL came in pretty messy after ...
5
votes
2answers
6k views

M4 screw and nut for 3D printing?

Does anyone know where I can get a free 3D design (STEP or STL) of an M4 Screw and nut? I have found only an M3 on Thingiverse: M3 Bolt by Kaleta.
5
votes
2answers
10k views

Is there a way to print with ABS without enclosure?

ABS is a very strong material, but it also has some downsides. One of them, which is the necessity of having a printer with enclosure, completely discouraged me from using it, as it would be a waste ...
5
votes
2answers
501 views

Mesh/Geometry quality

tried searching but couldn't find anything. I do not have a 3d printer so can't really experiment on my own, which means that when I am going to order a 3d print I want to get it as good as possible. ...
5
votes
1answer
596 views

How can I generate and export the support structure for an object as a mesh?

I want to render a visual of an mesh I created with a real support structure that a 3d printer would print. I haven't had any luck in finding a way to do this. Is there a program (ideally free) that ...
5
votes
2answers
239 views

How can I learn to create models for 3D printing? [duplicate]

I've recently bought a 3D printer and waiting for it to be delivered I've given quite a lot of time to looking things up on Thingiverse. I see people create incredible models with gears, screws, lids ...
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 ...
5
votes
2answers
5k views

How can I export a Materialise Magics Project as a STL file?

I created a new project in Materialise Magics, added a few parts (different STLs), moved them around in certain positions and now I want to export this project into another STL, containing my recent ...
5
votes
1answer
152 views

What does a "3 h5" mean in reference to the axle of a motor?

Sorry if this isn't the right place to ask, but it seemed like the most relevant stackexchange. I want to print a connection from a motor to an omniwheel, the axle of the wheel is listed as 8mm, but ...
5
votes
2answers
166 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 ...

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