Sure, we've thought of that too! To add a custom item through our configuration service (bars, slabs or profiles to size) you must follow the same procedure used to add a normal item.

The addition must be done after configuring it (see the answer to the question "How do I insert articles within a project?").

The article you add inside the project contains all the features you set during configuration, once inside the project this cannot be changed, if you want to change the specifications you have to add a new article and remove the previous one.