
You need a sheet of "3"mm Plasti-card, The dimensions of the control board,
A Marker pen and a Modelling saw or a Dremel .
I get an IBU2 Board and an ASP Board out of a single sheet of 30 CMs x 21 CMs Plasti-card with lots of space left over.
As most people know I glue a sheet of "Velcro" onto items that sit on the Hull floor of my Tanks so you can add a suitable size sheet of "Velcro" to the list.
If you don't already know the CLARK TK22 fits snugly into the RX18 holder so you should already have one of those.

As a Liner for the floor of the Holder and to cushion the base of the control board I glue a pre-cut sheet of Small scale Bubble wrap in place it not only cushions the control board but supports the uneven base of it at the same time.
Shaun.