4 no 820mm x 65mm x 22mm these make up the base
2 no 540mm x 65mm x 22mm long top section
2 no 560mm x 65mm x 22mm long top section
2 no 60mm x 65mm x 22mm short top section
2 no 40mm x 65mm x 22mm short top section
8 no 140mm x 65mm x 22mm upright sections
Once all the components are cut lay them out on a flat surface. I coded each piece with a number and a mark for which component attached to which. for example I drew a circle over all the joints on one section so I knew which section they were from and also where they aligned to the next piece.
I then sanded each piece as required to ensure a flush fit.