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Hoy — 24 Mayo 2025Welcome to R/3D Printing! Come for the Benchy, stay for the Calibration!

Progress on the engine I’m working on for a traction engine

Progress on the engine I’m working on for a traction engine

Cylinder and switches are Lego pneumatic Flywheel is a old sprocket from my bike Valve gear seems great it can even utilize cutoff however the reverse timing needs work tho I’m not sure what else I can do to fix it.

submitted by /u/Equivalent-Bus2217
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Why I think AI generated 3D models are bad for the 3D printing community

I am not against AI. But I think AI generated models are bad for the 3D printing community. Most AI models I have seen are just poorly designed and not suitable for 3D printing.

  1. They frequently have areas that need supports all over, also in hard to reach spaces where supports would be very hard to remove.
  2. They frequently have parts of the print that are too thin which will cause the print to break mid print, or afterwards.
  3. The people who make these AI models rarely print the model, but instead use renders that make it look amazing. Then when you look at the makes they look way worse.
  4. A lot of times the AI models have many likes because people look at the render and think it looks good.
  5. The renders sometimes have colours in them even though the model isn't made for multicoloured printing.
  6. Sometimes they get basics wrong. Like having a rough surface as the first layer on the bottom, or saying "no supports needed" when supports are needed. It is normal to find extremely complex AI models with the description saying that is is an easy print.
  7. People keep on lying about using AI. Almost nobody writes in the description that a model is AI generated. Why not be open about it?
  8. People claim ownership of AI generated models. In both the EU and the US, AI generated things are not copyrightable. Seeing an AI model labeled as not allowing remixes or commercial use is legally nonsensical and kind of arrogant in my opinion.

I personally know enough to see what is hard to print and what is impractical. But people who are new to the hobby don't. I'm just imagining a newbie buying a 3D printer and seeing awesome cool models, only print them and fail or get a result that looks nothing like the render. I feel sad for them.

submitted by /u/Leprecon
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Plant inspired Tic Tac Toe Game :)

Plant inspired Tic Tac Toe Game :)

Designed this cozy little game set for plant lovers (and print lovers)!
The twist-off lid becomes the board, and the pot-shaped base stores the pieces inside. Everything's print-in-place friendly and easy to assemble - no glue, no stress.

Characters are two types of monstera leaves: Deliciosa vs Adansonii

Printed in PLA with no supports and fun color combos. Perfect as shelf decor, a chill desk game, or a gift for the green-thumbed people in your life.

Let me know which characters should I make next ;)

submitted by /u/noordinaryleaf
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Rant discussion: if you’re going to post a remixable model, post the source file, not just the stl

Spent the past 5 hours in fusion making a modification to an imported stl from printables to make the model printable without supports because the amount of supports needed as designed is 2x the amount of filament needed for the model.

This would have taken 5 minutes to edit if the author would have uploaded the source file (STEP, F3D, SCAD, BLEND, etc) instead of just the faceted STL. So the rant is, if authors going to allow remixing in the license, they should be required to also upload the source.

submitted by /u/SnowPrinterTX
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Just bought this Ender 3 V2 Neo for 50€

Just bought this Ender 3 V2 Neo for 50€

Super happy with this, can't wait to upgrade it to make it really fast. Currently I have an elegoo Neptune 3 pro. The guy who sold it to me is the father of a classmate. He sold it to me because he kept having issues with it so he bought a new ender 3 V3 and wanted to get rid of his old one.

submitted by /u/VaniPosts
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For the woman who is always losing their chapstick

For the woman who is always losing their chapstick

I designed this for my wife who is constantly losing her chapstick. It's functional, but let's be honest. The moment she uses it once it will hang empty on the wall for years to come.

Like a savage from 2020 I cut the acrylic by hand and the vinyl was cut on silhouette vinyl cutter.

No real need to break the glass, everything is held together with 3mm magnets. Printed in PETG

submitted by /u/belokusi
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LED Infinity Mirror Pendant

LED Infinity Mirror Pendant

I designed this LED infinity mirror pendant to wear to a festival last year and was so happy with the results I wanted to share it with the world!

It's bright but not too bright, and the effect is super fun -- like having a tunnel to nowhere through your chest. Lots of people wandered up to me like moths to a flame just to stare into my void 😅.

Just finally got around to creating a tutorial and putting the 3D print files up for download. Does require 3D printing, some basic soldering and fabrication skills (mostly in cutting the acrylic triangles).

Video Tutorial: https://youtu.be/ODap-VITBZ8?si=MQsyG8aDpMg6Y5_g

3D Print Files: https://abandaziandesign.etsy.com/listing/4307771393/void-triangle-infinity-mirror-led

I haven't played around yet much but you can also create cool effects by putting other objects inside the mirror, e.g. a cool crystal or initials right in the center, as the reflections will also be refracted and multiplied.

Enjoy, let me know what you think and if anybody builds one definitely let me know how it goes!

submitted by /u/Mortal_Komrade
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Second toy design, I'm getting the hang of this!

Second toy design, I'm getting the hang of this!

I'm still having issues with easy things tho :/
Like the borders, I want to round them to avoid the pointy edges but it is not printing really well, it's maybe a better idea to make a 45 degrees ramp and the round the borders of the ramp?

On the other hand, with this model I tried some tricks like the print-in-place hinges and I think all of them worked really well :) if I found a way to fix this rough printed edges I'll be proud of it! ;)

submitted by /u/ianholing
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I designed a modular system for my bruxism detector

I designed a modular system for my bruxism detector

Hi everyone!

I've been working on interrupting bruxism for the last couple of months.

In the process I designed a simple but effective mounting system, basically you have one device (tracker) that can be easily hooked onto different modules and the modules in turn can be hooked onto other modules, forming a tower. You can have them lie flat on a surface together or individually, or be hooked to a wall, or stay attached to your belt.

It all integrates with the app and software. It's one big system I am proud to share with you all.
More information about my bruxism detector is here or in my GitHub repo. Everything is 100% free and open source.

The printable modules are here:

  1. Enclosure, battery and wall mount
  2. Cable and headband hook
  3. Belt addon
  4. Phone mount

The modular system seems to do the job pretty much flawlessly.
What do you think? Is there room for improvement?

submitted by /u/LollosoSi
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A 3D printed foot pressure point board (Inspired by Japan)

A 3D printed foot pressure point board (Inspired by Japan)

I live in Japan and often see rock pressure point walking paths at public parks. (4th picture is my wife and daughter trying one out) Many people swear by the effectiveness of foot pressure point reflexology. Maybe you've heard of Japanese Shiatsu massage? I created a small 3D printed version. "Are 3D prints foot safe?" 😆

I was skeptical at first but it genuinely feels great and relieves stress and pain in your feet. I'm sharing because I've gotten lots of comments from people that they genuinely felt better after using it. I hope you can give it a try.

I love functional prints, and one that can possibly help people makes me so happy.

I have two versions and you can check them out here

submitted by /u/TootallTim1
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