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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Meshmixer create solid

I have this .stl that I downloaded and I need to create a solid of this 3D. However, if I click "Make solid", it doesn't work. How can I do? I think the problem is the black layer but I don'...
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Can you 3D print an electrical connection

I am trying to create a two-piece snap-fit or joint using a 3D printer (Resin). After that, I plan to coat the joint with a conductive spray and create an electrical connection when the two pieces are ...
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Stepper motor D shaft to Lego axle adapter

I am working on a prototype and I have a need for a motor shaft to Lego axle adapter for use with a stepper motor. My overall project entails controlling a stepper motor using C# via USB connection to ...
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3 votes
2 answers
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Can you fillet the base of an object without needing supports? Is there a recommended radius?

I am currently adding a fillet to the base of an object (the plane that's touching the bed) and I was curious if the radius of the filet contributed to any mis-prints. I've had luck so far but was ...
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Software to Pose and Export FBX Character

I am a beginner and looking for software to easily pose a 3D character, which I currently have in an FBX file, and export the pose to an OBJ file. For example, I could move the character's arm upward, ...
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Adjustable Angle for a 1.5 inch OLED screen

I have a 1.5 inch screen, and I would like to create an adjustable angle plate for the screen, similar to Game boy advanced (shown below) Does anyone know how the mechanism works? By any chance, is ...
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Method to easily connect objects that are slightly spatially separate in .obj file

I am interested in printing a brain that contains 696 parcels (i.e., chunks that break up the total brain). The .obj file was created such that each of these parcels are spatially separate. Do you ...
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Which 3D printing material is best for floating designs?

I am trying to print a shape (e.g. square container) using clear resin. However, I am facing the problem of the design sinking when I put it water. I am right now trying to make it hollow from the ...
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4 answers
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Tips on incorporating a robust hinge

I'm working on a gadget a bit like a jewelry box. I want the lid on a hinge. Are 3d printed hinges robust enough for daily use long term? Perhaps with a metal pin? I want to incorporate the hinge into ...
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Little help on this Cura slicing or model error?

The left part of the first picture is giving an inverted circle when lying flat, but the right part of the first picture is how it should be. Same STL for both slice orientations. I tried toggling ...
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Deep ridges in all of my prints

I'm using an Elegoo Mars 3 printer. For some reason, all of my prints are now getting these deep ridges. each layer I can hear it peel away from the vat before it lowers again for the next layer. I've ...
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How Do I Determine The Appropriate Magnet Strength For A Tight Seal On A Box

I want to use magnets to hold the lid of a box down tight enough to keep it relatively airtight (along with a rubber seal etc.), but I am not sure what strength of magnet to use, that will still allow ...
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Can 3D printed bottle caps make a perfect seal?

I am using a Formlabs 3 resin printer and I am would like to create a bottle design with a cap. my objective is for the cap to completely prevent any liquid from going in or out of the bottle (even it ...
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Can you have a perfect seal to maintain moisture?

I would like to create a water chamber (Box) that maintains moisture. My main idea right to use a snap-fit model (Two faces). However, I feel that the areas where the two face snap-fit will allow air ...
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Can you snap fit 3D resin printed parts?

I would like to create something like a treasure box model. I want to print two parts: one is the base and the other one is the lid. However, I want them to snap fit together like LEGO pieces when ...
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How can I create a geometrical texture on a section of an STL file?

I have an already existing STL file of a car headlight but I want to add a specific raised geometrical texture, not just a PNG image but an actual texture that can be felt when it is 3-D printed. ...
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3D printing using only binary tensors representing parts

I need to 3D print several composites. The constituent materials are photopolymer resins. The composites are very similar to a Rubik's cube. Considering it that way, each voxel (every small piece of ...
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1 answer
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3D from 2D picture options

If I want to make 3D printable objects out of my old drawings, what are my options? Do I need to redraw the entire thing in 3D or is there a better way? This is an example of the sort of pictures I ...
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Best way to put a serial number on a 3D print

I want to put in a date and serial number that would be difficult to erase or change. Is it better to print in the number or engrave it in with a laser engraver. Material will be anti-bacterial PLA. ...
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How do you marry two object's holes in Freecad? 3D printing a drone

I am 3D printing a drone and I need very good tolerances for the holes so the arms and motors align correctly. I have two sets of 4 holes for two solid objects (Imported as STEP) I want to align the ...
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2 votes
4 answers
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Any way to have slicer make a stronger lattice work?

I'm trying to 3D print a lattice work or truss, basically some beams forming a rectangle and additional beams forming the diagonals and where those beams cross, they should be fused. So, something ...
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Why does my print have extra layer(s) which keep moving parts locked?

I just bought & received my first 3D printer and built it and tried my first print on it. It is this printer ELEGOO Neptune 2S I printed the following item (chip clip) as a test. The top of the ...
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1 answer
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My 3D printer shows inbuilt designs, but my designs are invisible

My designs are invisible on 3D printer LCD screen, i.e. the name of my design is showing up, but the part is missing and if I slice it with the software given by the 3D-printer company it works, but ...
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5 votes
3 answers
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How can I print a backlit keycap?

Using 3D printing I'd like to create a text oversized keycap that uses several strong LEDs to make the text light as red or green, depending on status. It's quite similar to what are called ...
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1 vote
1 answer
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How to add tolerances/gaps in OnShape?

When printing parts that fit together, there's a need to offset them from each other with a slight gap to provide for the printer tolerances. It's possible to take that into account from the very ...
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1 vote
1 answer
141 views

Is there anyone now permanently living in 3D-printed houses or buildings?

Are the following statements still true, or are they now out of date? [3D printed architecture] The problem is this: No one has been able to successfully take the leap from printing a fancy art ...
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What foundation designs are adequate for a 3D-printed one-floor building larger than 200 square meters?

With the increasing price of lumber and construction materials in the U.S., 3D-printed houses become a more viable way of building houses. Designing the foundations of mini-houses isn't difficult. ...
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1 answer
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How to create a 3D model as mold for a 4-legged animal with parallel legs

I am new to 3D printing, and new to mold design. I played around with a model from Windows Paint 3D library: And I realized that it would not be easy to 3D print a mold out of this. First of all I ...
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How do you adjust for elevation and layers not sticking together?

My printer was working fine two weeks ago, I traveled cross country with it (making sure it was secure while moving) to a place of significantly lower elevation. Nothing has printed well since I got ...
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How to create an air-free design?

I am creating a bottlecap-like design. The design is sealed by rotating the lid. I am adding a chemical to it for an experiment. I would like the inside of the design to have no air circulating to it ...
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3 answers
80 views

Is 3D printing really just 2D printing? Because only 2 motors move per layer

I was wondering the other day why don't all three motors move at the same time? Don't normal paper printers move 2 motors at a time? they're 2D printers. It makes sense if a 3D printer really does ...
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1 vote
1 answer
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How can we control the airflow in a fan which can be 3D printed?

I am new to 3D Printing and I have taken up a summer project. The project requires a fan 3D Printed, If I use a normal fan the airflow will make my project (i.e. a air-propelled car) go backward. Can ...
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1 vote
0 answers
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Source of design advice for modeling functional parts [closed]

Where do I go for deeper knowledge about 3D printing functional parts? I want to up my game a bit and design some more functional parts. In particular, I want to do more with boxes, organizers, and ...
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2 answers
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Recommendation for free, intuitive offline 3D modeling software for 3D printing [closed]

I've used TinkerCAD (https://www.tinkercad.com/) and was able to easily model objects for 3D printing, despite having no prior experience in 3D modeling. However it needs to be connected to the ...
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3 votes
4 answers
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Cura messes up my print. How can I make it print what I see in Blender?

I'm using Cura and it removes my holes and deletes sections of the print and disconnects parts. In Blender it looks as it should be, as I designed it. I know there are a few mishaps inside (not ...
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OpenSCAD render (F6) fails with "ERROR: CGAL error in CGAL_Nef_polyhedron3()"

I built a model and it previewed correctly. When rendering for STL export (F6), I got an assertion error: ERROR: CGAL error in CGAL_Nef_polyhedron3(): CGAL ERROR: assertion violation! Expr: e->...
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1 vote
2 answers
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Can 3D printer models be used in video game engines and vs versa?

If someone creates a 3D model of a character for 3D printing can I import that model into Unreal engine or Unity 3D for use in a video game? Also is the inverse true? Can I get 3D model of Mario and ...
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4 votes
1 answer
3k 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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0 votes
1 answer
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How to 3D print a shopping cart

I need to find a way to design and build a real shopping cart for my project. I have not idea where to start from but I'm thinking maybe I can 3D print the shopping cart which will allow me to quickly ...
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2 votes
3 answers
255 views

How to accurately print a thin piece with a hole pattern

I'm quite new to 3D-printing. I need to build a curved piece with a hole pattern and I was wondering whether it was possible to print such a hole pattern accurately, with such a thin (3 mm) thickness ...
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1 vote
2 answers
115 views

Which 3D printer to print heat-resistant material?

I need to print a rotor for a DC motor I'm designing. In the process of testing the behaviors of the motor performances, I would need a material that will not deform at a temperature range between 100 ...
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2 votes
2 answers
204 views

Improving print speed by adding holes

Let's say, I want to print a box for putting game tokens in. It is an empty cube, but the top layer is missing. I do not need full walls. It could have holes in it resulting in a mesh structured wall, ...
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Hack IKEA Trofast drawers

I'm looking to hack an IKEA Trofast storage unit. It's 3 drawers high (10 cm for each drawer), I would like to make it 6 drawers high, with thinner drawers (4 cm for each drawer). Which means : ...
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What effects does the non-carthesian coordinate system have on the Part-design process for printing with a belt printer?

Background: What's a Belt Printer's Coordinate system? For "normal" Cartesian (Portal, Cube) or Cylindrical (Delta) coordinate printers, the same Design Consideratons are to be kept in mind. ...
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2 votes
2 answers
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OpenSCAD not rendering polyhedron

I'm trying to subtract a polyhedron from a cube, but it is not working (the cube remains solid). However, I can see the cut-out poly in preview mode (but not after a full render). Preview -- poly ...
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9 votes
2 answers
4k views

Water does not flow through 4 mm hole when there is a small amount, how to let water flow through small hole even when there is low pressure?

I have a 3D print where there are 5 holes with a diameter of 4 mm in a cup, and I would like liquid to flow through all 5 holes at once while slowly draining the cup (by slowly I mean: just take a few ...
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0 votes
1 answer
101 views

Vertical 5 mm diameter hole comes out fine, but diagonal 3 mm holes keep collapsing

I am trying to 3D print an object from Shapeways. Confidentiality prevents me from sharing the actual STL files publicly, but what I can say is that it's a shape about 2 cm tall x 4 cm wide x 4 cm ...
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0 votes
2 answers
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When 3D printing a hollow box, what is the best course of action?

If I need to 3D print a hollow box that can not have any light permeating into the box, what would be the best course of action? Should I 3D print the hollow box as a whole or print out the 6 sides ...
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3 votes
3 answers
1k 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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1 vote
2 answers
86 views

Vertical vs Horizontal shapes printing

first time here. I recently bought an Anycubic Mega S and I'm venturing in the 3D world. Lots to learn for sure. I have printed a few items so far and all went pretty well. My question is about ...
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