This is a really interesting development Paul. I'm assuming the main limiting factor is time not printed volume, although more volume = more resin cost. I wonder if you could get a larger quantity and use less support by printing them vertically back to back with just a few joiners at the bottom to stop them flapping about. I'm also assuming that this potentially opens the way to printing to order to a specified sleeper size and spacing - and for turnout bases too. All we need now is castings for crossings and planed blades in Karlgarin and ME profiles.
John
