Sun Bottles

Step 4: Seal in that LED Goodness

Next you'll want to keep out the constant rain that comes 9 months out of the year . . . what's that you say?  It doesn't rain incessantly where you live?  Preposterous!  Even if that were true, you'd want to keep out the morning dew and the occasional drizzle, so that's what we'll do in this step.

Get a decent silicone sealant that's suitable for outdoors applications.  Get all of your bottles set upright and make sure you've got 1/4 to 1/2 inch of room above each of the paper towel plugs.  Squeeze in some sealant, making sure to get plenty in amongst the bundle of wires.  Allow to dry overnight and vacate the area, uncured silicone is nasty stuff!

When it's all done you should have a strong but flexible silicone plug at the top of each bottle.