I figured this might stir up some interest! I really don't want to pay for an Excalibur when I live in the desert where solar is abundant and free. I did notice in the product description that the base has a flat black painted aluminum sheet. I'll look online for some free plans and get them to Sniper for tweaking the design. TY Taz and Molly (my granddaughter's name as well) for those links!