I have decided to build my “micro layout” in an IKEA frame. Ribba is a square frame 25 x 25 cm, 9 ¾ x 9 ¾. The workable area inside the frame is 21.8 x 21.8mm ≈ 8.3 x 8.3″ and a height of 3 cm ≈ 1.18“.
I will use two sets of fine track with 60 and 70 cm radius curves respectively so I can make something a little bit more interesting than just an oval. The frame height allows me to run two levels of track. I created fine track templates and printed them to test out some layout ideas while I wait for my order to arrive. You can download the template if you want to print out your own.