[LDCad] Parts that do not connect

[Philippe Hurbain]

For parts to connect in LDCad, you must add snap info to the file using LDCad's own snap meta commands.

You can also put these commands into a shadow file (say, if you want to add snap info to an existing library file).

You can edit snap info using a text editor, or in LDCad by activating part editing (if it's not already).

Also note that if you build your custom parts with LDraw subparts and primitives you'll get connectivity in LDCad thanks to inheritance (LDCad connectivity is defined in most axlehole and connhole primitives).
Eg. the 1x2 beam, look (with a text editor of better with LDPartEditor) how part 60483 is done, similarly the 1x5 alternating holes beam can be done by shortening 2391.
The catalog of LDraw primitives is here.