Primary Coil & MMC

Just wondering, how did you build that beautiful Primary I see here:


I would LOVE to make one that looks that nice! What kind of wood is the
base from too... I couldn't find much in circles, I could get a large
sheet and use the jigsaw though.. ;)

My primary just didn't turn out well.. lots of kinks in the pipe.. any
hints for a beginner? 

On the MMC, what are those caps you are using?