Questions tagged [3d-design]

3D design (or modelling) is the process of creating a three dimensional digital representation of some object that, for instance, can be 3D printed.

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33
votes
7answers
16k 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 ...
29
votes
7answers
4k views

Designing clips that won't break

As my first project, I'm trying to design a holder for glass vials, for a scientific application. The photo below shows the latest design iteration, and also shows the problem with it: As you can see,...
17
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9answers
2k views

What is the best 3D modeling software for a beginner on a 3D printed mini barrel project?

My goal is to 3D print a 5 liter miniature barrel with a side stand, similar to this wooden one on Amazon. I want it to have a removable top so that a boxed wine bladder may be put inside, and there ...
16
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2answers
3k views

How do I 3D-print fair dice?

As 3D printers become more and more reliable, their prints get better and better. But FDM printers do have their problems too: you print tiny ovals that smooch together at the edges, and infill makes ...
15
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4answers
5k 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 ...
15
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7answers
4k views

Open Source 3D scanning

I am trying to make a structured light 3D scanner using single camera, light projector and a turntable. After days on Google I did not find any reliable open source project which I can get to work. ...
14
votes
1answer
6k views

Tips for making parts that push/snap together

I would like to make some parts that will fit together. Specifically, I'm making an array of holders for small glass vials, which will stack together vertically to make a kind of extensible spice rack,...
12
votes
1answer
161 views

Comparative design methods for joints that will be joined together

I want to 3D-print some parts that will be later joined together along a seam. When modeling these separate parts, what are some methods that work well with 3D-printed pieces? For example, if I were ...
11
votes
2answers
439 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
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2answers
1k 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 ...
10
votes
1answer
513 views

What's a good way to secure bushings in a 3D printed part?

I'd like to secure bushings in 3D printed parts. They would be used for a drilling jig. I've seen heat-set inserts, but they've all had threaded interiors. The best idea I can come up with is printing ...
9
votes
1answer
2k views

What is the best length of the melting zone in the hotend?

There are many hot end designs out thee and one difference is the length of the melting zone. The melting zone is that part of the hotend where the pushed in filament is heated up and therefore ...
9
votes
2answers
2k views

How to create tappered thread in OpenSCAD?

Is there any simple way of creating tappered thread in OpenSCAD? I need something like 10 mm in diameter at the end, 9 at the top and the height of 10 mm.
9
votes
1answer
429 views

Printing a CV joint

Fair warning: I am a complete novice in 3-D printing. This will, hopefully, be the first thing I've ever printed. I want to make a Constant Velocity Joint for a camera stabilizer I'm making. I've ...
9
votes
2answers
500 views

Feasible 3D Printed Snap Connectors

I have Ultimaker 2+ 3D Printer and I need to print a piece that doesn't fit within the build volume of the printer. Even though it would fit I'd still need to print it in two parts because I'll need ...
8
votes
3answers
290 views

Are there any “best” or at least “common” practices to handle allowances in OpenSCAD code?

I'm designing a few mechanisms with OpenSCAD, and one of the parameters that need adjustment between printers/filaments is allowances between pieces that need to be assembled together (for example, if ...
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
277 views

How to decide print orientation?

Please Note: This question is not about the design. It's about deciding print orientation after the design. I have a small, but complex piece which I need to print. Here are two images of different ...
7
votes
3answers
2k views

Generating mold from stl file of the 3D drawing of the object

I want to know how to make a mold of a 3D design in .stl format. Suppose I have a 3D partin .stl format (for e.g. a cylinder) and I want to make/design a mold for this object (i.e. the structure ...
7
votes
3answers
2k 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 ...
7
votes
3answers
5k views

How to add internal supports/localized infill, preferably in Cura?

I'm currently designing a very large and complicated model, because it's large and should be strong enough completely hollow I want to print it with no infill to save material. However, there are ...
7
votes
1answer
156 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
5answers
10k 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? ...
7
votes
1answer
581 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
2answers
316 views

SVG to STL conversion to make symbols recognisable for visually impaired users

I work on communication devices for people with disabilities that prevent them from speaking. This can be anything from a board with symbols on, to a relatively sophisticated app. Some potential ...
6
votes
4answers
426 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
3answers
542 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
2answers
244 views

Are 3D printed gears applicable for industrial use?

Are 3D printed gears applicable for industrial use? I want to print some gears with ABS. What will their lifespan be? How long will they last if I use them, for example, every day?
6
votes
1answer
422 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
3answers
419 views

Printing Object in multiple parts

Is there any software/methods to automatically splice objects into multiple pieces sort of like a jig saw puzzle so that I can combine them together and bypass the build plate size limit? As an ...
6
votes
3answers
249 views

Slicing software and Sidewall

I am new to FDM RP. I've done a lot of work on ZCorp and Connex. The question is can vectors curve drive an extrusion nozzle? Within a 3D volume I can generate curves that I want the print nozzle ...
6
votes
2answers
6k views

Printing multiple prints stacked on top of each other

Suppose I want to to print several copies of a large, flat object, such as a hollow frame. If I make an STL file consisting of several copies floating just above each other then my 3D printer's ...
6
votes
3answers
413 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 simulation tool software which i can use to ...
6
votes
1answer
138 views

Triangulation adapted to curvature

I don't know whether this belongs here (where most of the questions appear to be about hardware) or on Math or on Blender (though I've never used Blender). All of the designs that I've published so ...
5
votes
2answers
384 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
4answers
729 views

Seamless prints?

Is there a way to make all your prints seamless?? I know there was this program that printed a vase constantly changing the z axis making it seamless. Why cant this be done with regular prints?
5
votes
3answers
397 views

Preview 3d printing process

Is there any type of software in which you can animate the way the .stl object will be printed? I'm not talking about what the end result looks like. I'm talking about a tool which acts like it's ...
5
votes
1answer
242 views

Why are the STL files for the Ultrascope telescope at 45 degree angle?

I began printing the parts for the Ultrascope DIY telescope designed by the Open Space Agency. See http://www.openspaceagency.com/ultrascope. All of the STL files for the 3D printable parts are ...
5
votes
1answer
340 views

What is the best method of printing joints for action figures?

I'm interested in 3D printing toy action figures, but what I don't quite know how the joints should be designed to allow flexibility. I could imagine maybe something like a screw and nut for the ...
5
votes
1answer
728 views

Can the `render` function be used to speed up rendering?

I am designing a moderately complicated piece in OpenScad. It renders fast enough in preview mode (1s). But when i do a full render so I can export to STL, it takes ages (In the 10s of minutes) I ...
5
votes
3answers
405 views

Functional object in low poly - program and tutorial

I'm losing my mind, it all started out with the idea of a project where I want an abstract shape (I'm going to call it a stretched cube with an angle), now I know a bit of Vectorworks - a 3D/...
5
votes
2answers
2k views

FreeCAD to design moving parts

I am trying to create a mechanism with moving parts, and would like to see how it works (whether it even works) before printing it. For example, there's a servo with a bracket, and I would like to ...
5
votes
1answer
557 views

OpenSCAD library for empty space/holes

I am working on a design in OpenSCAD, and need (would want) two things that seem tedious to hand-code: A pattern of holes in a wall, for less weight/material. Could be round holes or some geometric ...
5
votes
2answers
456 views

Which 3D design softwares make multi-material amf or other design files that slic3r will slice?

I'm looking for suggestions for 3D design software which support designing multi-material parts. I will be printing on a multi-extruder machine based on RepRap firmware. The printer will handle the ...
5
votes
3answers
106 views

Getting precise measurement of a complex rod

I'm trying to build a headrest for my Sayl office chair. For that, I'm designing a 3d-printed part that's going to fit on one of the existing rods of the chair. Check out this picture: How would you ...
5
votes
1answer
1k views

How do I compute the surface & volume of a large amount of STL files?

Please, how do I compute the surface & volume of a large amount of STL files ? I have over 3000 STL files, and I want to know their respective volumes and surfaces. I will use this data to be ...
5
votes
1answer
123 views

Should black high temperature ABS flow in direct sunlight?

I bought a digital sundial online and deployed it in (what else?) direct sunlight in DC in June. Within 30 minutes the gnomon started to sag and the mount started to pull away from the gnomon at the ...
5
votes
1answer
441 views

Opening .STL to scale in Print Studio (Dremel)

New to 3D printing so sorry if this is a simple/basic question. I've done a ton of Googling but can't seem to find the answer... When I download a .STL file and open it in Print Studio, it opens as ...
4
votes
6answers
2k views

STL to STP CAD Conversion

Does anyone know of a good way to convert a 3D print file, like STL, to STEP - a useable file format for plastic injection molding companies? I have tried to convert the files through a couple of ...
4
votes
2answers
749 views

How do you 3d print from an existing part when you have no CAD drawings?

We have a toy with some broken parts, an Executivity Gear Master. I don't think it's made anymore. Some tiny parts were easy to break and we'd like to 3d print some replacement parts. We don't have ...