[LDCad] Problem exporting model to ldd

[Roland Melkert]

I'm making a Lego robot arm build guide in LDCad. But being a novice, I accidentally created a sub-model within the main build window. My finished model is now saved as 'LDraw Multi-Part Project' instead of as an LDraw file(*.ldr). I found my mistake after many hours of build when I finally tried to export my build guide to Lego Digital Designer, as it is the format I was expected to submit. When I try to import this file to Lego Digital Designer(LDD), LDD only looks for *.ldr files only. I want to save my sub-model as main model in LDCad with all the steps I used to create it. A search on the internet hasn't helped me find solutions. I really don't want to go back to the drawing board and spend many hours I barely have on building it again. Can anyone help?

Are all the bricks in one submodel?

If so LDD won't really care (just rename the mpd to ldr). This because it will read any LDraw content as a single model, ignoring any mpd instructions in the file.

If you did add bricks to multiple sub models you need to reorganize.

Go to the main model and select the submodel you want to 'dissolve', then right mouse click to open the selection menu and use reorganize/inline

If you want to go back to a clean ldr state you could also do:

- enter nested mode ( 'n' key while mouse is inside editing area). 
- ctrl+a (ignore message)
- ctrl+c
- Start a new file
- ctrl+v

I recommend making a backup copy before any this though.