Questions tagged [3d-models]

Use this tag for questions about 3D models.

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2
votes
1answer
130 views

Does it matter where I place my models on my Resin printer build plate?

I have a resin 3D printer, so I can print multiple models of a similar size without the overall build time increasing very much. So long as I stay within a set height range. Presuming that my build ...
5
votes
1answer
1k 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 ...
4
votes
4answers
574 views

Very low strength of HIPS prints - Why?

I'm using a Prusa i3 MK3S printer. After ~8 months of printing PLA, PET-G, ABS I decided to buy some HIPS and print something with it. I cannot print >1 filaments at once, so I'm not using it as a ...
3
votes
3answers
103 views

What's the best way to connect pieces of a large print after printing?

I have a number of fairly large printed pieces. The parts, when assembled, form a very large sword. (The model is this: https://www.thingiverse.com/thing:4178060, and is not mine.) It is about 7' ...
4
votes
2answers
117 views

QR code 3D printing

Is it possible to 3D print a QR code? or to engrave it using a 3D printer? I tried to convert it to individual boxes but that takes too long and is very inaccurate. Is there a better way?
3
votes
1answer
79 views

Adding points to a point cloud

I made a scan and got a cloud point file, but the cloud point is not that good, but I need to print it in a 3d printer as soon as possible, just to see how it would look. Basically it's missing some ...
1
vote
3answers
192 views

Converting a 2D black and white image to a 3D model for printing on Linux

Windows has its 3D Builder software which upon importing an image, converts it to a heightmap of the image, aka turning it to a 3D model that can be saved as an stl. Does Linux have software with ...
3
votes
4answers
120 views

How can I convert a mathematically defined shape into a 3D printable G-code file?

Suppose I have the X, Y, and Z coordinates (either in a list or a function z = f(x,y)) that defines a shape as the one provided and I want to 3D print it with a solid bottom, is there an easy way to ...
0
votes
1answer
79 views

What are the best DICOM files to print 3D hearts?

I am working on a project to 3D print (models from) human hearts. I want to know if anyone has done it before using DICOM files.
0
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2answers
173 views

Fill hollow part of body in the 3D model

Sorry, I'm new in 3D printing and modeling and I need help. I bought a 3D model with a hollow part of the body that doesn't print on my printer normally (with very high resolution (layer is 0.12 mm, ...
0
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0answers
66 views

Can Fusion 360 optimize topology using only struts and triangles?

I want to make a light titanium part which will be very visible and 3D printed. Can I force Fusion to use only struts like this? I realize it will limit the performance but in this application ...
0
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1answer
79 views

I am getting bubbles and a bulge at the bottom layer of my 3D print

I am printing ABS on an Ender 3 printer at a temperature of 240 °C on the nozzle and 110 °C on the bed. I am getting the following result: Is there any way I can fix this?
5
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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 ...
-1
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2answers
437 views

How do I compress 3D files

I'm trying to compress different 3D files, but find it difficult to find the right software to compress the file. What are the most suitable 3D file compressors to compress 3D files like STL, OBJ and ...
2
votes
1answer
70 views

How thick should I make my walls for stable 3D printing on an Elegoo Saturn?

If I'm printing buildings that are about 2-3 inches high as scenery on my Elegoo Saturn, how thick should I make the walls? We're talking square boxy-type buildings with basic surface details. I don't ...
2
votes
2answers
102 views

Low quality printing on tall 3D models

I have the FlashForge Dreamer NX which prints with good quality on small models. However, when the model is taller than 2 cm or 2.5 cm (around 0.8 or 1 inch), it really loses quality. Here there is a ...
1
vote
3answers
77 views

Can I build a 3D image of a warrior type character if I only have one image of that character from one frontal view

Ok I’m so new at Blender. Half the time it’s knowing what question you have to ask to get the answer you need... I want to make a 3D printable warrior type action figure but I only have one very ...
5
votes
3answers
126 views

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 ...
2
votes
1answer
98 views

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 ...
1
vote
0answers
53 views

How to 3D view an OBJ or STL object given its URL?

I have OBJ and STL files generated by reality capture software and stored on a website. I'd like to send our users web links that will take them to a 3D object web viewer loaded with the corresponding ...
1
vote
1answer
48 views

Bottom layer exposure for prints placed directly on the bed (resin printer)?

I have an Elegoo Saturn Mono resin printer. If I make a 3D model that has a "sacrificial layer" on the bottom, and I place it flat on the bed, will the area in contact with e bed ...
0
votes
1answer
41 views

Determine screw size needed from 3MF file(s)

I have a set of 3MF files to enclose a MacroPad. They have openings for screws that go through top then PCB then into bottom, but I've been unable to figure out the dimensions of the screws needed and ...
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 ...
0
votes
2answers
71 views

How to fill these squares easily

I have an array with holes that I have to fill with different materials. My question is there is an easy way to fill them directly? I tried array, array draft and it is annoying to adjust them. In ...
2
votes
2answers
757 views

Printing and slicing big pieces with Elegoo Mars (Pro)

I'm pretty new in the 3D printing world, and there are some doubts that have come my way and I've not been able to find anywhere. Usually, I'm going to try to print pieces bigger than the bed of my ...
1
vote
0answers
51 views

How can I fill in the gap in this model without this tessellation/deformation occurring?

To start off my apologies if this question seems somewhat unclear. For context I am attaching the images of the model and the modified version in TinkerCAD. My issue is that I cannot fill in the gap ...
0
votes
1answer
94 views

How to print Lego bricks?

How can I print Lego bricks in order to make them attach? I need them to be standalone pieces. I use resin to print. My model is Elegoo Mars 3. What resolution should I use? Also, how should I color ...
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 ...
1
vote
0answers
20 views

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 ...
0
votes
2answers
70 views

Laptop keycaps for Asus UX31A

I broke 2 keys (i.e. left ctrl, enter) on my Asus UX31A laptop and it seems that this model is too old to find replacement keys. Is there any way I can find a 3D model of the needed keys to have them ...
3
votes
2answers
172 views

How do I concave an image to create a 3D file for use in a 3D printer?

How can I print an embossed image in a concaved shape? Like a big saucer. I will use this an a mold for a project. So far I've found lots of software with huge spread of features. It's sort of ...
3
votes
2answers
159 views

Creating a 3D modelled "mold over" an imported object

Let's say I've made a 3D scan of my face and managed to get that into FreeCAD. How might I then create an object (it's a mask, okay?) that conforms to the shape of my face, with a given thickness, ...
2
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4answers
70 views

Manual Color Changing

Ive been experimenting will multiple color filament but the colors a more or less blended. Is there are filament that goes from one color directly to another without having transition color ex. red to ...
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 ...
0
votes
1answer
358 views

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->...
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?
1
vote
2answers
58 views

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 ...
3
votes
1answer
1k 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?
2
votes
1answer
72 views

Wrong calculation of E-parameter values

Hello dear Community, I am trying to print my first Box and I have a problem with the skin of the bottom layers. After finishing the slicing and while looking into the generated G-code I was wondering ...
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? ...
2
votes
1answer
43 views

Considerations for placing STL on build plate

Being new to 3D printing, I have started printing different files from Thingiverse to better my experience. I have noticed on some YouTube videos that certain items/models/STLs should be oriented a ...
0
votes
0answers
24 views

What exactly are the advantages of a multi-composite printer for a space company?

I found information about such a printer, Aerospace Additive Manufacturing, and the description says: Our Skyprint 1 additive machine allows to print multi-composite parts simultaneously from several ...
0
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0answers
82 views

How to create free shapes in tinkercad?

I bought a 3D-printer (I love it!!) and now I'm creating 3D-designs with Tinkercad. I'm (obviously) a beginner and I'm now trying to create the bow of a little boat for which I have a specific shape ...
3
votes
1answer
9k views

How to edit G-code created in Cura to begin printing at a specified layer height?

I have an issue with implementing a G-code to print a large 3D object using the Creality CR-10 printer. The print went well for over 30 hours but the filament broke off during the print and stopped at ...
1
vote
1answer
114 views

3D model with errors when exporting to Cura

I 3D modeled a cartoon car using Blender, mostly using add and subtract with boolean tools. When I export to Ultimaker Cura, I get these cuts along the model. Does anyone know why this is happening? ...
0
votes
2answers
79 views

Can I sell a handpainted large scale 3D model of a copyrighted 2D concept art?

The art in question is https://www.instagram.com/p/CIfsO2ZD7Rj/ . I Think the concept artist, Jean Giraud, is dead.
1
vote
1answer
178 views

How to edit STL model files

The slicer included with my printers (ChituBox) has no STL editing capabilities. How to edit STL models?
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 ...
1
vote
1answer
90 views

How to print spiral(spring) static?

I have designed this model: My goal is to make it static, no vulnarable to shakes. The pitch is 40 mm with 4 revolutions. The dimensions of the 'wire' are 5x5 mm. Which settings for printing should I ...
2
votes
3answers
3k views

How can I convert .STL file to .OFF to use in CGAL?

I want to skeletize the surface mesh. For that I need to export .STL from Solidworks and then convert that into .OFF file to be able to use it in CGAL library for skeletonzation. How can I do this?

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