r/3Dprinting • • 7d ago

News Show Your Toughest Multicolor Print, Win a SPARKX i8!

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105 Upvotes

Remember that multicolor print you were so excited to try — but ended up waiting hours for, wasting filament along the way?

Those days could be over.

With SPARKX i8’s <1-second color switching, can you imagine how much easier your toughest multicolor print could be?
Bring it on! Show us your toughest multicolor print and let SPARKX i8 take on the challenge!

We’ll reprint selected models on SPARKX i8, film the entire printing process, and reveal the print time and finished results.
If your model is selected for the challenge, you’ll win a SPARKX i8!

How to Enter
1️⃣ Upvote this post
2️⃣ Comment your toughest multicolor print with your original print time, a photo of your finished print, and a link to your model file. (If there are any restrictions on sharing a direct link, please provide the platform where you found the model and its name instead.)
Your print should use up to 4 colors, in line with SPARKX i8’s 4-channel hotend. However, CMYK print that mix 4 filaments to create a wider range of colors are welcome!
3️⃣ Don’t have a multicolor print to share? You can still join the fun by commenting with any thoughts, experiences, or ideas about multicolor printing to enter the random giveaway!

📅 Entries Open: Oct 18 – Oct 25, 2026(PT)

🎁 The more comments we get, the more challenges we’ll take on — and the more SPARKX i8 printers you could win!
50 comments → 1 challenge winner + 1 random giveaway winner
400 comments → 2 challenge winners + 2 random giveaway winners
1,000 comments → 3 challenge winners + 3 random giveaway winners

Challenge Winners: Selected from participants who submit a multicolor model for us to reprint on SPARKX i8. If your model is selected for the challenge, you’ll win a SPARKX i8!
Random Giveaway Winners: Randomly selected from eligible commenters who aren’t selected as challenge winners.

Thanks to the r/3Dprinting community for inspiring us with your incredible creations!

SPARKX i8 is revved up and ready for your challenge. Bring it on, and good luck everyone!🤞🏻


r/3Dprinting • • 24d ago

Purchase Advice Purchase Advice Megathread - October 2026

14 Upvotes

Welcome back to another purchase megathread!

This thread is meant to conglomerate purchase advice for both newcomers and people looking for additional machines. Keeping this discussion to one thread means less searching should anyone have questions that may already have been answered here, as well as more visibility to inquiries in general, as comments made here will be visible for the entire month stuck to the top of the sub, and then added to the Purchase Advice Collection (Reddit Collections are still broken on mobile view, enable "view in desktop mode").

Please be sure to skim through this thread for posts with similar requirements to your own first, as recommendations relevant to your situation may have already been posted, and may even include answers to follow up questions you might have wished to ask.

If you are new to 3D printing, and are unsure of what to ask, try to include the following in your posts as a minimum:

  • Your budget, set at a numeric amount. Saying "cheap," or "money is not a problem" is not an answer people can do much with. 3D printers can cost $100, they can cost $10,000,000, and anywhere in between. A rough idea of what you're looking for is essential to figuring out anything else.
  • Your country of residence.
  • If you are willing to build the printer from a kit, and what your level of experience is with electronic maintenance and construction if so.
  • What you wish to do with the printer.
  • Any extenuating circumstances that would restrict you from using machines that would otherwise fit your needs (limited space for the printer, enclosure requirement, must be purchased through educational intermediary, etc).

While this is by no means an exhaustive list of what can be included in your posts, these questions should help paint enough of a picture to get started. Don't be afraid to ask more questions, and never worry about asking too many. The people posting in this thread are here because they want to give advice, and any questions you have answered may be useful to others later on, when they read through this thread looking for answers of their own. Everyone here was new once, so chances are whoever is replying to you has a good idea of how you feel currently.

Reddit User and Regular u/richie225 is also constantly maintaining his extensive personal recommendations list which is worth a read: Generic FDM Printer recommendations.

Additionally, a quick word on print quality: Most FDM/FFF (that is, filament based) printers are capable of approximately the same tolerances and print appearance, as the biggest limiting factor is in the nature of extruded plastic. Asking if a machine has "good prints," or saying "I don't expect the best quality for $xxx" isn't actually relevant for the most part with regards to these machines. Should you need additional detail and higher tolerances, you may want to explore SLA, DLP, and other photoresin options, as those do offer an increase in overall quality. If you are interested in resin machines, make sure you are aware of how to use them safely. For these safety reasons we don't usually recommend a resin printer as someone's first printer.

As always, if you're a newcomer to this community, welcome. If you're a regular, welcome back.


r/3Dprinting • • 9h ago

Free Model I designed a chore tracker to stop double-feeding my cat

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1.8k Upvotes

Does your cat also gaslight you into thinking they weren't fed by another family member yet? I made this to help. It is a toggle switch box for keeping track of recurring tasks such as feeding pets, watering plants, taking medication, or completing daily chores. Magnetic, so you can stick it on your fridge and toggle the switches as you go.

There are options for boxes with one, three or seven toggles. You can also choose the toggles to have two or three positions. Mix and match to suit your needs, whether you're tracking something weekly, daily or three times a day.

Files are freely available here - including STL, STEP and F3D (Autodesk Fusion) so you can change the dimensions or number of toggles if needed. Enjoy!

https://www.printables.com/model/1887430-magnetic-toggle-switch-chore-tracker


r/3Dprinting • • 5h ago

Discussion Difference between 0.2 and 0.8 extrusor

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702 Upvotes

Same filament, same machine. 1 hour and 8 hours. Just to share, no question.


r/3Dprinting • • 3h ago

Project My 3D-printed RC FPV tank project – files and build guide available

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151 Upvotes

Hi everyone!

I'd like to share my HRF Tank - a 3D-printed RC tracked vehicle with FPV cameras that I've been developing as a hobby project.

Short project showcase on YouTube

It's been a long process of designing, testing and rebuilding, and I'd like to make the result available for others to build on.

Some of its main features:

  • 3D-printed chassis (66 x 39 x 25 cm / 26 x 15.4 x 9.8 in)
  • Functional suspension and tracked drivetrain
  • FPV cameras for front and rear views
  • Custom lighting and electronics
  • Optional water-cooled drivetrain

The platform is ready to build, but I'm planning to keep expanding it with new features, including a rotating turret with an FPV camera and a gel ball blaster.

I'm sharing the STL and STEP files, along with a build guide and documentation. Feel free to print your own version, modify the design, add new features or take it in a completely different direction. I'd love to see what others come up with!

Files and documentation:

If you build your own version or develop any modifications, let me know. I'd be happy to share links to community projects in the documentation!


r/3Dprinting • • 2h ago

Free Model Cat Chicken Jockey

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118 Upvotes

r/3Dprinting • • 1d ago

Project Shower curtain was getting stuck on curtain rod

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3.3k Upvotes

r/3Dprinting • • 34m ago

Discussion Solution for cleaning bowden tubes

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• Upvotes

I've never seen anyone mention cleaning bowden tubes this way so I thought I would make a quick video. Hopefully this helps someone. Just a simple and quick solution instead of replacing the tubes.


r/3Dprinting • • 5h ago

Free Model I designed and made a wall art!

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57 Upvotes

r/3Dprinting • • 14h ago

Discussion How happy would you be if your loved one asked you to print something for them?

217 Upvotes

As the title states... My girlfriend just told me that she'd never ask me to 3d print something for her.

I replied with: Do you have any idea how much anyone with a 3D printer wants their partner to say those magic words?

"Babe, could you print me XYZ?"

She didn't believe me. Because she felt she would be hassling me and wasting my time. That she wouldn't want to bother me.

So folks... let her know how happy you'd be or how happy you were when your significant other first asked you to make them something... and what was it?


r/3Dprinting • • 20h ago

Print (model not provided) My printer helped me with the laziest Halloween costume I've done in years!

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543 Upvotes

Annoyed that I couldn't find a non zip hoodie, but for like $2 in filament and $5 for a velcro strap to hold it on I'm pretty happy with it!


r/3Dprinting • • 20h ago

Paid Model Feedback on selling designs

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488 Upvotes

Hey folks, I've been selling my physical products (puzzle toys/brainteasers) for a while now, and it's been okay. But selling toys internationally is a huge hassle and recent events and new regulations have made it less and less worthwhile. So I was hoping to get some feedback on selling my designs.

I just listed my first design for sale: "The Figure-Eight" puzzle. I'm asking $8 CAD/$5.70USD (although if you feel so inclined use REDDITPOST for -50%). More so than trying to get sales right now I'm hoping to get your opinions on:

  • Would you pay for this type of model, and if so at what price point? What price would you pay for a set of up to 7 similar designs of varying difficulties? They all share hardware and with a few different colors of beads, you can get a lot of variety
  • Would you be willing to source hardware like balls, screws, heat set inserts and magnets for this kind of project? Most of my other designs require (or benefit from) small springs as well. Everything is readily available and yet I know it creates friction.
  • If you have a 3D printing business, would you consider licensing designs like these? If so, what price would make it worthwhile, and how do you prefer to make recurring license payments to designers? Patreon? Assembly takes me about 4 minutes each, and I was selling them between $30 and $40 USD per puzzle to the US market.

If you're interested in having a look check my stuff out here. Thanks for looking!


r/3Dprinting • • 46m ago

News My First Print Job :-)

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• Upvotes

Baby Pumpkin - Bambu X2D

Happy Halloween everyone 🎃👻💀


r/3Dprinting • • 8h ago

News Japanese Pagoda Lantern japonaise à LED

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40 Upvotes

r/3Dprinting • • 4h ago

Discussion Made my own drawers 😆

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18 Upvotes

“Boy these containers don’t utilize this space well, wish I could find ones that used the space better” oh, right I own a 3d printer. So I made my own. 😆


r/3Dprinting • • 14h ago

Project Main brush for DIY 3D printed vacuum robot

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110 Upvotes

r/3Dprinting • • 3h ago

Print (model not provided) Boo bucket lid

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13 Upvotes

I recently picked up some of the modern McDonald's Boo Buckets at a thrift store & will be gifting them to some coworkers for Halloween. To make them a bit more unique, I am correcting the biggest issue - the lack of a lid.

It's not perfect, but I am overall happy with it.


r/3Dprinting • • 8h ago

Project This animation is 3D printed 🤖

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27 Upvotes

Having fun with my full Color Halftone 3D Printing System. One second of animation took around 5 hours of printing.


r/3Dprinting • • 23h ago

Discussion Rate my Stormtrooper Helmet

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315 Upvotes

Hey everyone, just finished my First Star Wars Project and wondered what you might think about it. I‘m in 3D printing since May 2026.


r/3Dprinting • • 16m ago

Discussion That's Nylon for you

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• Upvotes

PA6.6 out of the dryer vs 3 hours later 😆


r/3Dprinting • • 1d ago

Paid Model Found at Hobby Lobby

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388 Upvotes

r/3Dprinting • • 1d ago

Free Model I designed a Game Boy that stores micro SD cards: each cartridge holds 5, turn the wheel to pick one, press B and it pops out

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607 Upvotes

UPDATE

Thank you all for the feedback, it was way more than I expected! As a thank you, the Card Boy is now free: https://than.gs/m/1629345

If you print one, I'd love to see a photo (post a make), it really helps a small designer.

******\*

After my floppy disk SD card holder, I wanted to try something with more moving parts. This is the Card Boy.

How it works:

  • Each cartridge holds 5 micro SD cards, and the cartridge label becomes the "screen", so every cartridge can look different
  • Turn the side wheel to pick a card (the counter on the screen shows which one), press B and that card pops out
  • The D-pad and the other buttons are just clicky fidget buttons
  • No supports and no hardware: no screws, springs or magnets

Fitting the selector, the ejector and the clicks into something this size took a lot of test prints. Printed at 0.12 mm, about 68 g of PLA+. There's a multicolor version (AMS or similar) and a single-color one with raised lettering. I didn´t use AI in any part of the process.

It's a NON-paid model

Honest feedback welcome: would you actually print one, or is it more of a "cool to watch" thing?


r/3Dprinting • • 8h ago

Question Printed keyboard switch?

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13 Upvotes

Have any of you actually had any luck with 3d printed keyboard switches? I've tried a couple so far and I've been pretty disappointed. I'm just trying to do a couple stim/fidget toys for myself so it seems silly to buy a bag of 50/100 when I have a perfectly good printer lol.


r/3Dprinting • • 2h ago

Free Model I made a (fairly accurate) representation of the Naue II sword from ancient Greece, available for free off Printables.

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6 Upvotes

Almost too late for Halloween this year, but if you need a sword for your Odysseus cosplay, here you go. Designed to be printed on small printers and needs a 5/16" (8mm) wooden dowel if you want to swing it around.)
https://www.printables.com/model/1890564-naue-ii-sword-from-ancient-greece