This process very easy. I used the paper ikea measuring tapes (they are free - I had a 5-6 laying around from a previous trip from there). I forget who used these but I know it was from a build on this forum. Sorry I couldn’t give you credit to whoever thought of this first.Got bored waiting for stuff to arrive so did the decorative nails for some easy bling not to mention it covers up nicely the slightly wonkyily finished outer rail View attachment 405841
Used blue tape to stick around the outside bottom layer. Then drilled small pilot holes like @Trihonda i think said he did. Then the pins just in nice and easy with a rubber mallet.
My spacing was 2”. Of course the circumference isn’t perfectly divisible by 2 and OCD is strong with me. So what I tried to do was to have the slight variation at one end where I spaced the last 2-3 pins at slightly more/less that 2” so that unless you measure it the spacing still looks equidistant...not sure if I’m explaining it right.