Thank you for your kind comments on my Homemade $10 Roundhouse post. I see you are rather new here, welcome. The first post on this topic is on my Homemade $10 turntable, that goes with the round house. I have a detailed topic here that shows how I built my 40 year old portable layout with 30 switches and includes the two post from this topic on TT and RH. The topic has projects on layout building, car and engine modification, homemade accessories like log and coal dumping buildings, etc.
It is on the link below and the first post, on page 1, has a table of contents.