I would like to add structural members listed in the Toolbox to the Weldments drop down menu under structural members. I can see lots of different structural members in the Toolbox but I can't get them to add to the weldment folder, nor can I get that profile listed in the Toolbox into my model.
Open the Part file with the profile sketch. Edit the sketch (if needed). I edited them to place the origin in a logical place, such as at the center of tubing, W-beams, etc., and at the corner of Angle. Close the sketch, then click on it in the tree to highlight it. While it's still highlighted, go to Save as... sldlfp (Library Feature Part). Save to the location specified at Tools > Options > System Options > File Locations > weldment profiles. After saving as .sldlfp there should be a green L on the sketch in the tree.
Keep in mind that you also need the correct number of sub-folders in the folder specified at File Locations > weldment profiles so that the sketch will be available to select when using the Structural Member function.
See #8 here: Frequently Asked Forum Questions for a screenshot of the tree after saving.
Please let me know if this answers your question, or if you need more information.