This is my 1.5" x 6" spun aluminum toroid - 6.628pF

This is my 4" x 13" spun aluminum toroid - 14.448pF

This is my 6" x 24" spun aluminum toroid - 26.512pF

I built three different sized 4" toroids:

4" x 11" - 12.01pF
4" x 17" - 18.66pF
4" x 22" - 23.08pF

I built a 6" toroid:

6" x 22" - 24.44pF

I built a ridiculously large topload:

6" x 36" - 37.002pF