and here are some of the steps to make one: I left out the trivial ones like hack-sawing through 1/2 inch (12.5mm) aluminium bar and cutting the acrylic tubing. Clicking on any photo should enlarge it.
|centre drill hole for wires|
|enlarge hole and drill through base|
|turn shoulder on base so acrylic tube will fit snugly, but won't split if the aluminium expands with the heat of the light or changes in room temperature. The acrylic also expands, but at a different rate.|
|test fit and turn some more|
|clean up the exterior|
|on my mill, mill channel for power cord so base will sit flat|
|now just assemble the LED electronics and they're done. If you look REALLY closely you can see the groove in the base of the right hand light.|