Compartment w Barrel v2

This can just be used with any type of light of your choosing, the bottom of the box is just flat. Glue in or whatever your favorite light source.
Compartment w Barrel v2 Light Mount

This uses a T10 Light Mount that I bought off Amazon.

Mount:
URL: Partsam 10PCS 16mm T10 Wedge 2962988 2973932 Instrument Panel LED Light Base Socket Holder

Bulb:
YITAMOTOR 20X T10 Wedge 5-SMD 5050 White LED Light Bulbs W5W 2825 158 192 168 194 Interior Reading Dome Map Cargo Trunk Door Doorstep Courtesy License Plate Side Marker Light

Barrel Pigtail: 5.5 x 2.1 Female

Filament I use for Lithophanes: https://amzn.to/2GIL8lo

How To:

Box Settings:
M3 Hardware for top. I will be using M3 x 12

Barrel Version uses 5.5 x 2.1 mm Barrel.

Barrel tolerances are tight. I sanded the plastic on the barrel on all 6 sides and it stays in friction fit. Try it first though. I then add a dab of Hot Glue on inside just for little added security.

MODEL SETTINGS:

Maximum Width: 100mm
Maximum Thickness: 3mm
Thinnest Layer: 0.8mm

IMAGE SETTINGS

Positive Image
Slicer Settings [I used Cura 4.4]
Layer Height: 0.1mm (0.12 will help speed it up without losing much detail)
Infill Speed: 45mm/s
Outer Wall Speed: 35mm
Inner Wall Speed: 40mm
Top/Btm Speed: 20mm
Travel Speed: 100mm/s

Photo Settings
I use Paint.NET for editing photos.
Key is to have the photos as square as possible to achieve a 100x100 output. If using Paint.NET:

Click "Image" at the top
Click Canvas Size
Define your anchor. I usually use center (click on center square)
Uncheck Maintain Aspect Ratio
Match the Height with what is in the Width px count
If happy, save your photo then upload it on http://3dp.rocks/lithophane to create the model, then print!