PETG solar fence lights made to slide over a pipe-fence post.

The housing fits over a 75mm oilfield pipe used for fences (in Texas). The adapter sleeve will allow the same housing to fit over a 62mm oilfield pipe.

Print the housing and retaining clip out of PETG, and the adapter sleeve out of TPU.

This print utilizes the guts from the $10 Home Depot solar yard lights. Easy to disassemble. You keep the top solar panel and battery mount, the LED/lamp assy, the led screws, and the rubber/plastic lens cover.

https://www.homedepot.com/p/Hampton-Bay-55-Lumens-Black-LED-Outdoor-Solar-Spotlight-with-Adjustable-Head-72301-03/320393334

To assemble:

• Disassemble the Hampton Bay light
  • Unscrew the solar assy from the base.
  • Unscrew the lamp housing.
  • Unscrew the lamp assy from the lamp housing (wires snipped so it should pop out after the screws are removed)
  • You should now have a solar assy connected to the lamp assy, only connected by wires.
  • Snip or un-solder the the two wires from the LED housing. Note polarity to reconnect in the future.
  • Remove the mount point on the bottom of the solar assy. This connects it to the rest of the ground spike/light housing. I used an oscillating tool to remove exess plastic. Be careful not to hit the wires.
• Print the parts
• Assemble
  • Remove battery from solar housing (for safety)
  • Loosely mount solar assy and lamp assy in the printed housing, enough to connect the wires.
    • Solder the wires back together or back onto the LED board or use your preferred joining method.
  • Use the screws from the original lamp assy and screw them into the mounting holes on the print.
    • The LED should be firmly mounted in place now (you may have to use longer screws, the lamps I tested came with different length screws)
    • Place the rubber gasket/lens cover on the LED
    • Snap the retaining ring into the print. This is a snug fit and may take some adjustment. There is some variation in the lights (rubber thickness), but I was able to get them all to fit.
  • Re-install the battery
  • Turn the switch on the back of the solar panel
  • slide the solar panel assy into the housing
  • Mount in the sun