Customizable Castle CORE One (L) Kit

6/13/2026 UPDATE: Replacement knobs now available!  Added three versions that look like medieval shields to match the rest of the kit.

6/10/2026 UPDATE:  Modified parts for the CORE One L now available!  There are 8x new parts specifically for the CORE One L in the folder "CORE One L Modifications".  All other parts are the same as the CORE One originals.

Customizable Castle CORE One Kit...try saying that five times fast 😉

This kit will turn your CORE One printer into a fortified medieval castle, which you can then decorate to your heart's desire with a variety of shield emblems, regal banners, window frames, and more.  The castle towers and walls perfectly frame the entire printer, and have numerous spots for magnetic decorations to be attached. 

The decorations I included in this kit are just the starting point...here are some other ideas to help fuel your creativity and build your custom CORE One Castle!

Customization Ideas:

• Apply custom crests / logos to the shield and banner models - STEP files included for editing

• The turrets make a great platform for figurines to guard your CORE One Castle

• Create new magnetic attachments...think of things like torches, other shield / banner designs, a mossy overlay, a dragon climbing the tower...the possibilities are endless!

If you want a magnet insert spot added anywhere, just give me a shout and I'm happy to make that change for you.

Required Parts 🔩

PRINTED PARTS

• Tower A (5 parts, incl. base, bottom, mid, top, and turret)

• Tower B (5 parts, incl. base, bottom, mid, top, and turret)

• Bottom Front Panels A & B

• Top Front Panels A & B

• Bottom Side Panels A & B

• Top Side Panels A & B

• Top Edge Support

• Optional Decorations:

  • Shield Frame + Lion Crest Insert or Printables Logo Insert*

  • Lion Banner

  • Star Banner

  • Crown Banner

  • Banner Rod

  • Arched Window Frame + Insert*

  • Stone Window Frame + Insert*

  • Gothic Window Frame + Insert*

*Insert parts are for ease of printing without an MMU / AMS and also make editing the STEP files easier for customization.

ADDITIONAL MATERIALS 

• 8 x 3mm magnets: ~100 + more for the decorations

  • Lite version (just covers the printer front and sides - no rear towers): 65 + more for decor

• Super glue

Note: Additional parts for adapting to the CORE One L will be added here soon.

Printing Tips 🖨

PRINT SETTINGS (recommended)

• 0.4mm nozzle

• 0.2mm layer height

• 15% adaptive cubic infill

PART-SPECIFIC SETTINGS

• Bottom Side Panels A & B

  • Apply supports to the areas shown below.

• Top Edge Support

  • Position the long flat edge on the print bed

• Banner Rod

  • Apply brim and slow down print speeds by ~50%

• Banner(s)

  • Recommend color change at 4.2mm

• Gothic Window Insert

  • Recommend color change at 0.8mm

• Shield Insert(s)

  • Recommend color change at 2.0mm

Assembly 🛠

1) The first, and most important assembly step is to start gluing in all of the magnets.  There are cutouts throughout the parts, but some are not for magnets.  So, if the magnet doesn't fit snuggly, it doesn't go there!

2) Glue the Top Edge Support pieces to the Top Front and Top Side Panels.  Make sure they are oriented correctly, like below.

3) Assemble the decorative parts, like the shields, banners, and windows.  The shield and window inserts will glue into their respective frames and the banner rods will glue into the channel on the banner(s), shown below.

Before gluing in any magnets to the decorative parts, I recommend making sure all of their polarities are oriented the same way.  I marked mine on one side to remember the orientation.

4) The tower bottom, mid, and top parts have slots on top where magnets can be inserted for attaching the decorative parts.  These magnets don't need to be glued in place.  Make sure all of their polarities are oriented the same way and properly mate with the decoration magnets from the previous step.  Note, locations of these magnets are indicated by a + sign.

5) Glue magnets into the Top Front and Side Panels at the locations marked with a + sign.  Same as before, make sure their orientation is correct for proper mating.  Some glue may seep through the front of the print, so make sure to wipe it off.

6) Attach all parts to the printer frame.  I don't recommend gluing the tower segments together, as this will prevent you from fixing any magnet polarity issues from the previous steps, if they occur.  The mating sides are clearly marked with text like A1, A2, B1, etc.

This model was a ton of fun to design and build, so please like it if you do and leave any comments!  Joining my club is the best way to show your support and if you're really feeling generous please consider buying me a coffee so I can keep creating!

Check out my TikTok!

Check out my YouTube!

If you like what you see, please consider joining my Patreon.