I'm especially interested in getting the secondary right. I also read somewhere that a collimation cap is not good enough for fast scopes, and they are, actually, hard to find these days. And most people don't have empty film canisters around the house any more either. I wonder if the young people have even seen them.
I think the barlowed laser is good enough for the primary, but getting the secondary in the right place is quite hard.
The only tools for secondary placement I've heard of this far are CatsEye Telecat/TeleTube XL(S), but haven't found out how they actually work.
Another problem, when it comes to making the tools, is, that most of the Europe is metric, and it's a bit hard to find, say, 1.25" or 2" plastic tubes. You can find some inch-sized (usually 3/4", 1", 1.5" and 2") water pipes with 3 mm wall thickness, though...