LDraw.org Discussion Forums
Origin of part 3651 - Printable Version

+- LDraw.org Discussion Forums (https://forums.ldraw.org)
+-- Forum: Models and Parts (https://forums.ldraw.org/forum-18.html)
+--- Forum: Parts Authoring (https://forums.ldraw.org/forum-19.html)
+--- Thread: Origin of part 3651 (/thread-25227.html)



Origin of part 3651 - N. W. Perry - 2021-09-17

I've come to the realization that the origin of part 3651 (the venerable "toggle joint" or pin/bush connector), and a few others like it, is quite simply in the wrong place. It should really be located at the center of the pin section, not the bush end, since this is always where it needs to be rotated when working on a model. Also, whenever a piston head is placed on it, it is at this point, and likewise with any other parts placed on its studs. Finally, whenever I need to measure the length of an assembly that includes this part, I always need to know the distance to the pin hole, not to the bush end. (Yes, I can just add 20, but it's one more step to make an error…and if I'm scaling a diagonal cross brace or something, do I scale the 20 as well or just add it afterwards…?)

I know that this is a very old part, and that changing the origin of an official part is essentially a non-starter since it would mess up a whole lot of pieces in a whole lot of models. And I can always just make a fixed version for my own use. But I am curious whether this has ever been brought up before? Certainly, all the newer connectors seem to put the origin in the right place. (Has it ever been considered to have a second version of a part to correct something like this without having to replace the existing one?)

Anyway, that's it for my mini-rant.  Wink Hope you enjoyed reading!


RE: Origin of part 3651 - Orion Pobursky - 2021-09-17

Trust me, there are a raft of parts with bad origins but backwards compatibility is important. This is why new parts need to be scrutinized to ensure the origin is in the right place functionally. It seems that every time I make a new OMR model I'm cursing the origin choice of at least one part so you are not alone in the club.


RE: Origin of part 3651 - Magnus Forsberg - 2021-09-17

A re-orientation is possible if we accept a renumbering to 3651a.

Quote:... origin of part 3651, and a few others like it

How many more parts are you thinking of?


RE: Origin of part 3651 - N. W. Perry - 2021-09-17

(2021-09-17, 17:23)Magnus Forsberg Wrote: How many more parts are you thinking of?

I would also add just these 3:
4273a
4273b
32126

Every other similar part (such as 22961, 15100, 32013 and its family…) seems to be OK.


RE: Origin of part 3651 - Philippe Hurbain - 2021-10-09

(2021-09-17, 17:52)N. W. Perry Wrote: I would also add just these 3:
4273a
4273b
32126

Every other similar part (such as 22961, 15100, 32013 and its family…) seems to be OK.
42135 origin is stupid too...