Graysmith, on 01 November 2012 - 05:57 PM, said:
• Can’t attach a 2x2 plate (3022) or a 2x2 plate with 1 knob (87580) to the top of a barrel (2489). In fact, I tried a whole bunch of bricks and plates, and round ones were the only ones that could be attached. Bug or a limitation of the software?
Question. are you supposed to be able to connect a 2x2 plate ontop of the barell IRL (i.e. is it used in any official set or so)?
Gnac, on 04 November 2012 - 06:02 PM, said:
This grey fullwidth technic beam cannot be inserted into the gap between the halfwidth black technic beams, due to a conflict which seems to affect modified connector peg parts 6558, 32054 and 32556.
Unfortunately, some official instructions rely on a connection like this. I encountered it while trying to attach the fork for the motorbike model in set 4404 - Land Busters.
Like legolijntje said - it's an illegal design, because the ridges on the pegs (not visible in LDD, but have a look on a real peg) would cause the peg to be in constant compression. This in turn would cause plastic deformation (aka cold flow
) that over time would ruin the peg (it would become loose and less "snappy").