BATMAN LOGO WITH NAME INSIDE To be used as pen top. Alternative, as image posted, with switch.

Material: Battery CR1220 2 leds Microswitch 6mm length button Hot glue gun Superglue

Steps:

1. Print parts
2. Solder leds to battery and microswitch
3. Hot glue the leds to one half of printed part
4. put hot glue on the other printed part side ( hot glue acts as light diffuser)
5. While glue is still hot, mount the two parts ( attention, pla gets soft with the heat)
6. With superglue, glue the pla join

Optional: Switch

1. cut a piece of spring from a pen
2. screw the parts as shown
3. Play with the screw until it fits to the right size.