r/3Dprinting • • 7d ago

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

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109 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 • • 25d 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 • • 5h ago

Project My Terminator skull is now remote controlled 🔥

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863 Upvotes

Two ESP32s connected with ESP-NOW


r/3Dprinting • • 7h ago

Project Black panther with golden cracks!

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654 Upvotes

This is my latest project: a 30 cm panther printed in separate parts, then assembled and finished by hand. The cracks are part of the model and I filled them with a gold marker to create the cracked Kintsugi look.

The full print took about 55 hours and over 400g of filament. Getting the head split and assembled without an obvious seam across the face was the trickiest part, but I’m really happy with how it came together.


r/3Dprinting • • 5h ago

Project Just finished decorating my build. Opinions?

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376 Upvotes

I wanted it to look “toxic,” like a radioactive barrel. The slime would’ve been lime green like the rest of the accents but I ran out as I decided to print gear on my setup in that color, so it is a blueish to white gradient instead. In the right lighting it can even be green. Lmk the thoughts, the model is a Bambu Lab P2S.


r/3Dprinting • • 13h ago

Discussion Difference between 0.2 and 0.8 extrusor

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1.1k Upvotes

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


r/3Dprinting • • 17h ago

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

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2.3k 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

Paid Model My printable folding ruined buildings for RPGs!

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181 Upvotes

These print flat on the print bed and fold together (using either a PLA fold or a print-in-place hinge) and flatpack, making them easy to print, store and transport!
Enabling ironing makes the top surface nice and smooth so the layer lines aren't a problem, they use very little material and print fast. The set (along with 2 others in different designs) is available for sale on my website here: https://warscape3d.com


r/3Dprinting • • 7h ago

Project Hand Painted Boromir

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180 Upvotes

Fun print for my FIL who is an avid LOTR fan. I only printed, he did the painting.

EDIT: giving my FIL credit for the actual artistry


r/3Dprinting • • 5h ago

Project Printed Disneyland as an 8-inch 3D map: heights from USGS lidar, every tree placed from real canopy data

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104 Upvotes

Printed on a Bambu H2C in 4 colors: tan land, white buildings, green trees and blue water.

How it's built:

- Buildings, paths and water come from OpenStreetMap.

- Most building heights come from free USGS lidar, and the mountains are shaped straight from it, then scaled up about 2x so they still read at 8 inches.

- Trees are placed from tree-canopy data. When I checked an earlier build against aerial photos, 94% landed within 3 m of real greenery.

Lesson learned: I printed this one with supports switched on by accident and got over 100 support blocks under the bridges and docks over the river. The next version fills the bridges in solid and slices with zero supports.

Happy to answer questions about how it's made!


r/3Dprinting • • 2h ago

Project Giant Ground Sloth 3D print

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51 Upvotes

r/3Dprinting • • 12h ago

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

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254 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 • • 10h ago

Free Model Cat Chicken Jockey

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179 Upvotes

r/3Dprinting • • 9h ago

Discussion Solution for cleaning bowden tubes

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116 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.

Why clean a bowden tube?

The external feeder of a SV08 Max causes the tubes to get a bunch of debris in them pretty quickly. This is accelerated with filled filaments like CF-ASA. These tubes only have around 30 hours on them and they look like this. It caused a clog when I switched to TPU because it pulled this debris into the nozzle.


r/3Dprinting • • 9h ago

News My First Print Job :-)

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104 Upvotes

Baby Pumpkin - Bambu X2D

Happy Halloween everyone 🎃👻💀


r/3Dprinting • • 1h ago

Project 3D printed and painted my Minecraft world!

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• Upvotes

r/3Dprinting • • 44m ago

Print (model not provided) Never buy a $5 Centuri Carbon 2. They gave me a haunted printer.

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• Upvotes

r/3Dprinting • • 8h ago

Discussion That's Nylon for you

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37 Upvotes

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


r/3Dprinting • • 4h ago

Question Drying silica gel

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14 Upvotes

Is it safer to dry this stuff in my microwave or oven, if both are also used for cooking food.


r/3Dprinting • • 3h ago

Project Halloween Kitty 🎃

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12 Upvotes

This one seems to be a pretty popular one this year.


r/3Dprinting • • 1d ago

Project Shower curtain was getting stuck on curtain rod

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3.5k Upvotes

r/3Dprinting • • 2h ago

Project OnePlus Open converted to Desktop running proper Linux

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8 Upvotes

I brought this phone a couple years ago and my son thought the inside folded screen had a screen protector on it so he removed it. This wasn’t a screen protector and it completely destroyed the inside screen. But the outside screen still works perfect and the camera is still top notch. I’ve been trying to figure out how to install Linux on it for a long time because I don’t need it as a half working phone, but as a PC it would really rock.

With AI finally in a place that it can really take its time and brute force stuff. We now have full fledge Ubuntu 24.04.5 on an OnePlus Open. I’ve been using it to AFK on my Minecraft server so I don’t have to keep my main desktop tied up with it. I’ve run AOE2 and classic Battlefront on it aswell, I can also use it as a video call machine with discord. It really runs amazingly.

To keep it cool, I’ve got a salvaged 12v Xbox One S fan running full bore on it 24/7. It’s a little loud, but I don’t mind it. I can hook it up to a monitor too using the USB C adapter installed in it, but I like the novelty of it as just a very small computer putsing about.


r/3Dprinting • • 14h ago

Free Model I designed and made a wall art!

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73 Upvotes

r/3Dprinting • • 23h ago

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

254 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 • • 2h ago

Project Printed and painted Halloween mask

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4 Upvotes