Hello!

Thanks so much for being here! This project was a long time coming. I've been wanting to design a 3D printed BMO since before I started in the hobby. I poured a lot of time and effort into this project, and I'm so stoked for people to see it. I'm happy to be releasing these files totally free, but I'd be even happier to see you come back after you're done printing and post a Make! They're always lovely to see!

Printing

Okay, full disclosure, you've got a lot of stuff to print! Your fully assembled BMO will be made up of more than 60 individual parts. Luckily, most of them are pretty tiny, so don't be too intimidated. I designed this model to print using as little support material as possible, but there are still a few parts that require supports, and a few more that I'd strongly recommend printing with supports to ensure the best print quality and stability. Any parts not mentioned in this section can be printed with standard settings and no support material.

• (BMO Case) - This part could probably be printed without supports, but it takes a long time to print, so why risk it? Autogenerated supports will work fine, but I created a support enforcer to prevent any unnecessary supports from being generated. To use the support enforcer, after importing the “BMO Case” STL into your slicer, right click on the model, mouse down to "Add support enforcer”, and click "Load...”. Select the file “BMO Case (SUPPORT ENFORCERS).stl”, and your enforcer should appear. Then, in your support material settings, check “Generate support material”, uncheck “Auto generated supports”, change your support style to organic, and check “Support on build plate only”.

• (BMO Battery Compartment) - This is another part that would likely print just fine without supports, but there are a few areas that could benefit from them. I provided a support enforcer for this file as well, other than that, I just used default snug supports.

• (BMO Battery Compartment Cover) - Also used default snug supports on this part.

• (BMO Arm 1 & 2) - These parts will definitely require supports. I used organic.

• (BMO Heart) - This is another part where supports are a must. The part itself makes very little contact with the print bed, but default snug supports will keep it stable while it prints. Printing in this orientation will leave the part with a flat spot and the surface quality might be rough, but these blemishes will be on the back of the part and won't be visible once BMO is assembled. I included an alternative version of this part for anyone that would like to try to find a better print orientation. If you do, please share it in the comments.

• (BMO Springs) - Print these at 100% infill with PETG, or another material with similar qualities. PLA won't do the trick.

• (Screens/Faces) - If you have a multicolor 3D printer, printing these should be a breeze. If not, I found a great video showing how to print these without the need for multicolor printing capability. Here's the video, you can skip to 22:00:

3D Printed Custom Key Caps, with or without a multicolor printer, using PrusaSlicer.

It's a surprisingly easy process, and it's honestly kind of a game changer. This definitely wont be the last time I use this technique. As for the filament colors, I used the three shades of green PLA mentioned in the “Materials” section below, as well as black and white PLA in various combinations to print all 8 of the provided multi-color screens. I'm also including SVG files of the screens/faces I designed in case any of you would prefer printing stickers and sticking them to the blank screen.

• Everything else should print with no support material necessary.

Materials

Finding filaments for this print was quite a challenge. I used 12 different filaments in total, 11 different colors of matte PLA and some clear PETG. Here's a full list of the filaments that I used, the parts that I printed with them, as well as Amazon links to each.

ELEGOO Teal Green Matte PLA

• BMO Case

• BMO Front Plate

• BMO Button Box

• BMO Battery Compartment

• BMO Battery Compartment Cover

• BMO Battery Compartment Cover Clip

• BMO Vent Panel

• BMO Arm 1

• BMO Arm 2

ELEGOO Sunshine Yellow Matte PLA

• BMO D Pad

• BMO Disc Drive

• BMO Infinity Box Thing

• BMO Heart

• BMO Heart Medal

• BMO Capacitor

• BMO Scroll Top Half

• BMO Scroll Bottom Half

ELEGOO Slate Gray Matte PLA

• BMO Fastener

• BMO Negative Battery Contact

• BMO Positive Battery Contact

• BMO Negative Battery Compartment Contact

• BMO Positive Battery Compartment Contact

ELEGOO Black Matte PLA

• BMO Logo Fill

• BMO Drive Slot

• BMO Battery Bottom Half

• BMO Battery Joiner

ELEGOO Ruby Red Matte PLA

• BMO Red Button

• BMO Scroll Wrap

• BMO Scroll Bow

ELEGOO Navy Blue Matte PLA

• BMO Controller Ports

• BMO LED

• BMO Disc Drive LED

SpiderMaker Peacock Green Matte PLA (Currently out of stock)

• I printed BMO's legs with this so they would be darker than the rest of their body, but they would have looked just fine printed in the same material as BMO's Case.

HATCHBOX Terracotta Matte PLA

• BMO Battery Top Half

ELEGOO Ice Blue Matte PLA

• BMO Blue Button

SUNLU Green Matte PLA

• BMO Green Button

ELEGOO Mint Green Matte PLA

• BMO Blank Screen

ELEGOO PETG (Any color)

• BMO Spring

Please don't use this like a shopping list and buy 12 new rolls of filament you don't need. While finding reference images of BMO for this project, I was surprised to see just how much BMO's look changed throughout the series. BMO's appearance changes slightly episode to episode, so there's really no one perfect shade of BMO teal. Feel free to use the closest color matches that you already have in your filament collection, or break out some paints to keep this project affordable.

Assembly

Very little is needed for this project beyond the 3D printed components, but you will need a bit of glue and some magnets. The glue I used was Gorilla Super Glue Gel, and I ordered some 6x6mm cylindrical neodymium magnets from Amazon.

Here's a link to the magnets.

Most of the parts friction fit together, or are attached using 3D printed fasteners, but you will need glue in the following places: The lettering on either side of BMO's case, BMO's heart medal, both positive battery compartment contacts, both disc drive LED's, BMO's scroll bow, and all the magnets. Glue these parts and allow them to fully dry before final assembly. Everything else is meant to friction fit together, but feel free to add glue wherever needed.

The assembly process for BMO is pretty simple, but I'm going to lay things out in excruciating detail to avoid any possible confusion. You can find these assembly instructions in the form of a PDF in the Files section.

Thanks!

If you've made it this far, thanks for taking the time to actually read the description, this certainly was a long one! I hope you love your 3D printed BMO and that you'll come back and share a picture or two. I'd also love to hear any suggestions for clarifications or other changes I could make to the description to provide a more pleasant printing/assembling experience. Drop me a follow or find me on socials if you'd like to see more work from me in the future. Okay, goodbye for now!

Adventure Time BMO Figure (Interactive)

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill

0.2mm layer, 2 walls, 15% infill