CozyFire

The CozyFire is a lighting fixture that looks like a campfire and can create a cozy environment, just like a real campfire, but without the carbon emissions. With a size of 22.5 x 24.3 x 21cm (LxWxH), it is designed to fit nicely on a shelf or side table. 

The design consists of three black logs representing charred wood and a transparent flame with a light source inside. When opting to use a Philips Hue smart light you could even get the flame to breathe like a real campfire would. The flame is specifically designed to be printed with fuzzy skin to give the light a nice texture. The parts are the perfect size to be printed on most common FDM printers. Besides that, CozyFire only requires a handful of readily available components to ensure anyone can build it.

Gallery

Below some images of the finished product can be found.

Bill of Materials (BoM)

Screws

The design uses 3 M3*8 screws, however, M3 screws with a length of 10 mm would also work.

There are also 3 M3 heat-set inserts needed. I accounted for the ones from Ruthex, they require a hole with a diameter of 4mm and a depth of 5.7 but most other brands would also work.

If you don't feel like using screws or don't have any on hand, you could also glue the parts in place but I recommend using screws to allow for disassembly and better alignment.

Filament

In total, the model requires 420 grams of filament

Of which 300 grams of black or wood filament is used for the logs, 95 grams of transparent filament is used for the flame and 25 grams of white filament is used for the flame base. (As the white filament is only visible from the bottom the colour doesn't really matter)

Others

Finally, you need an E14 LED bulb and socket. 

For the E14 Socket, I used the Ikea Strala as it is cheap and available all around the world.
Note: Depending on your region there are two versions of the Strala, an E14 and E12 version, I used the E14 version but I assume the E12 will also fit but make sure to get a lightbulb that matches your socket.

For the bulb, you can use anything that matches your socket size, however, I highly recommend using smart lighting such as Philips Hue as they can emulate the breathing effect a real campfire would have. I personally went with these from Philips Hue but their other colored and white ambiance versions also work.

Print settings

In the files section, 3mf files for both Prusa Slicer and Bambu Studio can be found with all the settings applied. If you are using a different slicer you can use the settings found below
 

Logs:

• 2 walls (0.4mm nozzle)
• 15% infill
• Tree supports on parts sticking out
• print with a large brim ~40 mm
• 0.2-0.28mm layer height
• Black or wood filament is recommended

Note: If the logs are too tall to fit on your printbed I recommend putting them on a 45-degree angle and adding tree supports, another solution is placing them horizontally with the bottom side facing down (the bottom is the side with the pin sticking out)
 

Flame_Base:

• 4 walls (0.4mm nozzle) (prevents light shining through)
• 15% infill
• Supports around the outer edge
• 0.16-0.2mm layer height (more detail for the curve)
• The flame base can be printed in any colour as it is only visible from the bottom, I opted for white to match the aesthetic of the flame
   

Flame

• 6 walls (0.4mm nozzle) (we want solid walls near the top where the light shines through)
• 7 top layers
• 15% infill (doesn't really matter as it's only at the bottom)
• Auto tree supports
• 0.2mm layer height
• Print with transparent filament
• Random seam position
• Use the Arachne wall generator
  • minimum wall width 75%
• Use Fuzzy skin
  • Only on the outer layer (otherwise it will take very long to print and doesn't add much value
  • 0.35mm point distance
  • 0.18mm thickness

Assembly 

First install one heat-set insert in each log as shown in the image.

Connect log A, B, C in clockwise order by pushing the pin into the hole of the other log, do this for all three logs to create a triangle.

Install Flame_Base on the logs by matching the letters with the letters on the logs, then secure it in place with the 3 M3*8 screws

Screw the lamp socket in place with the cord side being on the bottom (side without the letters. Then screw the bulb into the socket. Finally, install the Flame by twisting it clockwise until it clicks in place.
Note: To look more natural the flame isn't perfectly round, though it can click in place in all orientations I recommend installing it with the tip of the flame towards Log_A

You're all set! 
Enjoy your new CozyFire!