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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615 views

Creating “pie slice” in OpenSCAD?

When making a cylinder, sometimes I need to only take a pie slice. I'm currently using this neat trick to make pie slices for angles under 90 degrees. However, I have need of a few angles over 90 but ...
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3answers
115 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 ...
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1answer
2k 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 ...
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1answer
154 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 ...
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1answer
500 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 ...
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4answers
547 views

How can I have a large 3D printed object?

I have a concept that's roughly 18"x30" (about 457x762 mm), and I just realized that the Makerbot and similar printers only allow dimensions around the size of a piece of paper. What are other options?...
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2answers
680 views

What special considerations must be taken when designing parts for 3D printing?

What are the 'headline' basic design rules for FDM? Which topics for design principles do you recommend to someone who has purchased an FDM machine and wants to understand what is practical? In ...
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2answers
1k 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 ...
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3answers
671 views

Is it possible in any 3D printing software to create a coiled tube?

I've gone on quite a few sites (thingiverse, grabcad, etc) in search for a coiled tube, but I have yet to find anything suitable. There are a few coils ("springs") but no coiled tubes (i.e. the ...
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1answer
4k views

Mechanics for modelling a push button latch spring

I am designing a door to put on a small enclosure that will open and close upon pressing a button. The idea is something similar to what you would find on an external DVD reader. My problem is with ...
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3answers
731 views

Problem in 3D printing of an empty model

I'm new to 3D printing. I modeled an empty bird in Blender (the stl file of model is presented). I tested the model in Blender (using 3D printing tool) and also the Netfabb software. They don't show ...
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1answer
604 views

Hemispherical Bowl : how is it possible?

I was reading up about how to extrusion print an overhang greater than 45 degrees, when something weird stuck me. I see lots and lots of 3D extrusion printed bowls that have perfectly printed ...
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2answers
750 views

How to modify 3D model of body?

I'm relatively new in the field of 3D printing and design. By now I've created and printed some technical objects with TinkerCAD, but now I've a task, which I don't know how to solve. I have the ...
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3answers
877 views

Set the overhang parameter in Blender 3D printing tool box

I'm working on a cube in Blender. I just deleted one of the faces (the top face) of the cube and added solidify to avoid non manifold edges. In this case, when I check the design it shows that the ...
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3answers
169 views

Advice for 3D modeling peg for sprinkler dripper

I'm not really sure where to ask this question as I think it is a design question, but also a printing question. So if there is a better place to post, I'd be happy to harass someone else. I'm (re)...
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2answers
5k views

Can the glTF format be used for 3D printing?

Can the glTF format be used for 3D printing? If not, is there any tool can convert it to another format such as STL, OBJ, STEP, and IGES?
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2answers
1k views

Slicing adds holes/cracks to my object

I recently got started in 3D printing but here's an issue I can't seem to find a solution for (I don't know what exactly to look for). Here's what I did: I used InkScape to convert an emoji in to a ...
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2answers
2k views

3D Builder is Saying “One or more objects is invalidly defined”

Currently, 3D Builder is telling me "one or more objects are invalidly defined. Click here to repair." What is this and what does it mean? When I click it, it totally messes up my model (I can't tell ...
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3answers
551 views

Looking to use 3D printing to make a master plate for rubber stamp vulcanizing

I am an art rubber stamp maker, using a vulcanizer to make art rubber stamps from molds that are usually created with a magnesium plate. The normal process is to send artwork off to an engraving ...
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1answer
73 views

Rule of thumb for small type

Is there a good rule of thumb for small type on 3d printed pieces? Minimum type size? Good typeface for accurate reproduction?
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3answers
277 views

Material for printing orthotics

I noticed foot arches are already digitized, but custom arch supports are usually expensive. PLA and ABS aren't the best material for printing arch supports, especially if they replace the shoe's ...
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1answer
216 views

How to print a voxel object?

I recently downloaded Magicavoxel to give this voxel thing a try, and I was curious if there was a way to turn the voxel files into a file for printing? Magicavoxel doesn't seem to offer a way to ...
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2answers
143 views

My print did not turn out as I expected. Where can I start troubleshooting?

I am trying to modify this thing. It's prints OK, but there are some design choices I don't like, so, since the previous makers uploaded their source files, I tried my hand at Sketchup. My latest ...
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1answer
789 views

How to “paint” a mesh on a stl/obj

I have almost 0 experience in 3d modeling and I'm looking for a simple way to color a model. I want to replicate this paint job of a model. I've tried Blender, tried Mudbox and I don't have the ...
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1answer
282 views

Car Body shop Printers

What type of printer would one recommend to print and cast car body parts fast on a large scale? Also if I were to print parts for restoration would I need licences from the manufactures?
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1answer
106 views

What printer should I consider for printing microfluidic channels? [closed]

I am looking to purchase a 3D printer for the fabrication of microfluidics. I am looking for a printer that can print channels with less than 200 µm cross-sections, preferably, can print ...
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2answers
229 views

How to remove internal part of a hex grid

I am modelling a few cut templates to be used on an hexagonal grid (honeycomb) material using OpenSCAD. Basically, from a reference cell, I need to select all cells that are within a given range and ...
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1answer
2k views

Slic3r not interpreting STL correctly

I'm very new to 3D printing, I purchased a Monoprice Maker Select Plus last week and I'm just getting started with printing my own models. I can create fairly simple models in Sketchup without a ...
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1answer
515 views

How to add tolerances/gaps in 123d Design?

When I design parts that must fit in each other, I usually keep in mind that prints are 0.2-0.5 mm wider than expected (depending on material) and I size the parts accordingly. However, sometimes I ...
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1answer
279 views

Is inconsistent vertex density a bad thing?

Will an inconsistent vertex density likely introduce artifacts in a print? Or is it OK as long as it's a smooth surface?
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1answer
69 views

Efficient packing of models with chains

I have a model where several solids are linked with chains. The original design contains a lot of empty space. I am looking for software, which can automatically move the solids and fold the chains ...
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1answer
984 views

Efficient way to create a “mold” of a solid object in Meshmixer?

Currently I have a model of a fingertip finished in my project, however, I would like to create some sort of "cap" that if printed would fit on top of that finger. Is there a good way to achieve this ...
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1answer
232 views

Dual PSU with one switch fuse

My home built printer has been having issues running properly. The x/y/z motors will run freely with standard non build position commands but when they are suppose to start a raft layer and they ...
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3answers
739 views

Design connection to motor shaft for printed gear

I am currently trying to print a gear with the possibility to connect it to the shaft of a DC motor. The following picture best describes what the shaft of the motor looks like by showing the hole ...
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1answer
173 views

How are things like a USB casing designed for 3D printing?

How are professional or regular products designed on the computer for manufacturing? Do they do it by making a 3D model and then getting it made by manufacturers/plastic factories, or the process is ...
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2answers
202 views

How to design gears

I want to create a micromouse project for fun that use 2 20 mm x 8.5 mm (0.8 mm shaft) motors. I have my own PCB as base. I want its built-in gears will be attached to two 3D-...
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5answers
129 views

3D Print Enclosure

Developing an electronic product for which I'll need an enclosure. It's about 50x30x20mm and should survive higher temperatures (50-60 degrees). Because of the low volume (under 500 required per year),...
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1answer
1k views

How could I print a large sphere-like object?

I have a STL file with a rather large roughly-spherical object. I'd like to 3D print it to be fairly large, and hollow inside. Since the printer I'd be using has a max size of (18–20 cm)^3, I'd have ...
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3answers
816 views

How to concave a cylinder with Onshape?

If I have a 3D cylindrical extrusion (in Onshape), how can I scoop, carve, or indent a concave/parabolic curve in one of the ends? The yellow surface is the target. Here is the basic shape I'm ...
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2answers
265 views

Help needed to design 3D printer part

I am attempting to build a 3D printer using the Bear Upgrade for guidance. However, I want to modify some of the parts. I am basing the modified parts on the original designs. I would like to ...
3
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1answer
62 views

Convert ball-stick model to STL from the command line

I regularly have 3D models that consist of a Boolean union of balls and cylinders (molecule models, star maps, mathematical designs), that I then want to convert to a STL model for printing at ...
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1answer
69 views

PVA support with small tolerances

I am at the moment designing some in place mechanical parts. Something like two cylinders that rotate with respect to each other. I need in my design some overhangs that cannot be printed and I was ...
3
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1answer
358 views

3d print aluminum valve cover for car

I am interested in 3d printing from aluminum valve cover for car SAAB valve cover I am thinking of creating 3d scan and the placing order with i.materialize or similar online services. I am curios ...
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1answer
174 views

Linking the 3D printing path coordinates to CAD for modelling

I was reading this research paper titled Sub-modeling Finite Element Analysis of 3D Printed Structures. In this, firstly, the author is trying to create a sketch for Engineering analysis using the 3D ...
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1answer
173 views

How to draw cube with cone (Dreidel like), using Onshape?

I want to draw a cube with cone using Onshape. I need the cone to "shave" the corners of the cube, till it gets to the middle point. This is diagram I made: What is the best way to do it?
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2answers
2k views

Make a nose cone in Fusion 360

I am new to Fusion 360 and I think I'm going straight to something complicated. Is there a way to make a nose cone for a model rocket? What tools would one you to accomplish this?
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1answer
275 views

File too big to open in Tinkercad. How can I shrink it?

I need to shrink an STL file below the 25 MB threshold, so I can open it in TinkerCad. I don't care about quality, I just need it shrunk. How can I do this?
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1answer
2k views

How can I convert STL files into PDF drawings?

Does anyone know of an easy and free way to convert my STL models to a PDF drawing for CAD and metal CNC machining? I've created some great designs that are all STL files and want to somehow send ...
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1answer
174 views

How do I decide what size my push-fit feature should be?

I'm designing a box and lid that will be FDM-printed. The lid push-fits onto the box. What kinds of gaps/tolerances should I use when designing pieces that fit together? has advice for designing the ...
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2answers
143 views

Bicycle air pump project

Is a home 3D printer capable of printing a good bicycle air pump? I've searched the Internet and there is very limited info on it. Things need to be rigid and very minutious in the valve part of the ...