Swap Lamp for Walls (Winter version, Herrnhut star)

Swap the lamp for a new style for any occasion. This version is a star (Herrnhut star) themed lamp which fits for winter and christmas season. Other versions available for swaping:

• Modern version: https://www.printables.com/de/model/41740-swap-lamp-for-walls-modern-version
• Halloween (pumpkin) version: https://www.printables.com/de/model/623036-swap-lamp-for-walls-halloweenpumpkin-version

Print instructions

Disclaimer

This lamp requires the skill to work with mains voltage (230V/110V). If in doubt, ask a professional (or your parents if you are underage) how to work safely. The author of this manual will not take any responsibility or liability for any damages to person or property caused by improper safety precautions or the installation of the described lamp.

Update of files:  the base plate was updated in Feb 2024. The original parts exhibited cracking and shrinkage due to heating by the LED. The improved (current) version allows for airflow behind the LEDs.

Required materials (full build)*

• 2x LED driver, constant current source, input 230V/110V, output 700 mA
• 2x High Power LED 700 mA star
• Transparent PETG filament for the “lenses"
• A filament for the electrical part (see “modern lamp”, Prusament PLA Galaxy Black was used in this example)
• A filaments for the star (Prusament PLA vanilla white was used in this example)
• 2x two pin connectors male and female each. The model is optimized for the connectors shown on the pictures.
• Super glue/cyano acrylate/any other transparent fast setting glue which adheres to your filament.
• Wire (should be thick enough for 700 mA and thin enough to fit into the carrier

*: if another version of the Swap lamp is already in place the constant current source is already mounted and you know most of the thing below already. This will be easier then.

Instructions

1. Please find the files for the wall mounted base and the mounting description in the “modern version” of the lamp-set: https://www.printables.com/de/model/41740-swap-lamp-for-walls-modern-version
2. Use the files “connector” and “lamp-base” from the "modern version" of the swap lamp series. Print those files in any filament you like. In case you plan to use other lamps for swaping consider to use a darker color (Prusament PLA Galaxy Black) as in some versions of the lamp this part can be seen very well (modern version)

Skip when a wall mount is already present from another version of the series

1. Prepare the constant current LED driver by cutting and stripping the cables. Cramp the connectors to both sides. Use female connectors on the constant current source to prevent short circuits. If no cramping equipment is at hand solder the joints.
2. Prepare the wall base (file in “modern version”) by gluing the constant current driver and the female connectors in place.
3. Check your local regulation, since in some countries working at mains voltage is only allowed by professionals. If you want to attach the power yourself, check your safety precautions. Open/remove the power fuse so you do not work on live wires. Prevent the fuse from being reset.
4. Check for cables or studs, drill holes and screw the lamp base to the wall. Connect the constant current sources’ input to the mains power line.

Continue here, in both full build or "new version build"

1. Prepare the connector (file in “modern version”) by deburring if necessary. Test fit the connector to the lamp base. If the connector does not slide with low (to medium) force, use a deburring tool or some sandpaper to improve the fit. Spray the two guide rails with silicone spray to improve sliding (optional).
2. Before gluing the (vanilly white) base on the (galaxy black) lamp connector (file found in “modern version”) check alignment. Therefore, mount the black connector plate on the wall mount and mark the top spot on the insode of the backplate. This will ensure that the star will not be skewed to one side, in case your wall mount is slightly off. Now remove the connector plate and glue the (vanilly white) base (file in this version) to it. Make sure, that your marking helps you to obtain an upright star. Alternativle, glue the vanilla white base plate to the black connector plate while the latter is mounted on the wall. No markings will be needed this way. Finally, glue the LED carrier for the LEDs to the base (same .3mf file).
3. Solder the High-Power LEDs to their power wires. Do not solder the High-Power Leds when they rests in their printed sockets since the sockets will melt from the heat. After cooling down, carefully pull the wires through the two holes in the lamp base/connector part (see above) and glue the LEDs into their sockets (see picture).
4. Solder the male power connectors (check polarity, see picture), mount the parts on the wall and test for connection. In some cases the leads of the male power connectors need to be bend a little to create a good fit. Continue, when the electrical connection is reliable.
5. Prepare the core structure by removing the additional bridge layer (filled rectangle). This layer was implemented to improve the bridging during printing. Afterwards, glue the rays to the core and glue the whole assembly to the base with the LEDs.