Macbook Pro Double Stand

I have an older 2012 Macbook Pro 13" and I just bought a new 2019 Macbook Pro 13". Rather than print two stands, I decided to remix this nice design and create a double stand. The 2012 Macbook Pro is 10mm thicker than the new 2019. One of the slots is 30mm and the other is 20mm. This leaves 5mm extra per slot for gluing felt. Thanks to the original designer!