Good grief Mick, not much air or scrap etch on that lot. Very tidy.
Absolutely not.
Playing Tetris with the parts can be long and gruelling, but the end result is a neat and strong etch.
I recall the artwork took five or six days to do (off work on holiday helped) then two nearly three playing Tetris and then another two filing and adding tabs. I try to keep all the relevant parts roughly in the same area but sometimes that's not possible.
At the bottom are the main frames and anything attached to them like sand boxes and spring hangers, in the middle is all the transverse stays, motion bracket and cylinders etc; above that the mish mash of bits that didn't easily fit in the areas below but mostly brakes, motion and cylinder peripherals.
Finally at the top is the bogie all in one section, it's planned like this as the bogie is near identical on the L1 so I don't need to do any....or very very little.....of that artwork again. I can simply carve that whole top section off and transfer over to the L1 etches, that's a couple of days work saved.