1W LED fibre optic lock lamp. Used to help illuminate keyways for picking.

Required parts:

• 1W heat-sink mounted LED (https://thepihut.com/products/1-watt-cool-white-led-heatsink-mounted)
• 1mm fibre optic cable (https://www.ebay.co.uk/itm/231917439525?hash=item35ff5b4a25:g:b6kAAOSw-0xYhyN5)
• 2x AA battery holder with on/off switch (https://www.amazon.co.uk/dp/B000PEJQMY/ref=pe_27063361_485629781_TE_item)

Assembly:

• Solder the battery connector to adjacent positive/negative terminals (see image).
• Print the parts (PET-G recommended)
• Enlarge the hole with a 1mm drill, if required
• Push the fibre optic cable into the top. A press-fit is sufficient. Glue can be used but this will prevent the fibre being changed if damaged
• screw the top into the base