Update on the tracking project:
Boards have been organised.
They are chip board however so I have tried to weatherproof them.
Normally, the thread on a tripod is 3"8, however the tripod I have secured doesn't have that width, it uses the M8 width, so I have secured that rod and various bolts I am anticipating I will need.
I am concerned about how to secure the bottom board onto the tripod securely. It will need to hold the board, the dslr and the lens of course.
I am using a template to build it, so it should work.
https://barn-door-tracker.co.uk
I can't quite see how it is secured.
Perhaps this will be one clearer when I secure the final parts.