Hey nice to see a fellow dutchy! And then one with a nice cabinet too 
Hi! I was also wondering if there were any dutch cab builders on this board! And thanks for the compliment :-)
I ordered my t-molding from t-molding.com, but the problem I now have is to find some wood sheets that will fit the t-molding
I've seen 18mm and 22mm, but not 3/4". But then I haven't been to any real wood shops (just Gamma and Praxis)
I also got my wood, nuts and bolts from Gamma, since I had no idea where to get it. My sidepanels are 18mm MFD (makes my cab
really heavy) the rest is 16mm. I understood that for T-molding one needs special tools (a router?) so perhaps I'll wait a little while with that, I've spend my budget already

Coin doors are expensive yes. I have my mind set on a happs pinball door which costs $94 and then add "some" shipping. Kinda silly for something that doesn't add any real functionality. 
From what I have heard, Happs shipping costs are pretty steep. If you bought one I'm interested to hear what they charge for shipping to Holland ...
Btw, why didn't you print the marquee "full" size?
Well it's a weird inch-to-centimeter converstion thing. I used 'Poster7' to print the marquee and it would only accept inch measurements since I had A4 paper I got the message that 'some scaling might occur' so here it is. I didn't want to waste more photopaper and ink since I plan to have it printed in a reproshop on one sheet of paper instead of three stuck together.
@pcdoctor
what size is your trackball?
I bought my trackball from Ultimarc, it's a 2 1/4" trackbal (5.7cm) and should match a pool billiard ball.