Looking at the SketchUp model and I see that the edges on the leg component have the yellow mateial applied to them while the edges on the aprons are the default material. If you use a style with the Edge Color set to By Material, the edges on the legs will nearly disappear due to their color while the edges on the aprons and the top will remain black.
Rectified the edge coloring issue. Since I don’t have “Selection Toys” I reset the whole leg to default “No Material” by going into the component and selecting all the edges and faces and then “painting” with the “no material” texture.
I then existed the component and painted the leg with the proper color. Edges now show.
However, when I orient to an elevation view, Im seeing this…
The edges that seem to be missing are hidden, not softened/smoothed. Here I’ve selected some of those edges. Hidden edges are shown as dotted lines with Hidden Geometry turned on. Softened/Smoothed edges show as dashes.
So, you are into the deep weeds with me now. Got the leg from the 3D warehouse. Obviously a mistake now. So much hate that one goes looking for models there and they mostly end up being trash.
How to clean that up is beyond my knowledge. Not seeing dotted lines. Everything is dashed.
As to making my own. Was trying to save time. Have a .jpg of the actual leg but working out how to translate that into Sketchup was going to be half a day for me. Now im at over half a day just working out this leg.
What I would be interested in is a tutorial and paying for an hour of your time to show me how to do this. Will DM you.
Have a feeling this was originally modeled in some other software and then exported as .skp file for the manufacturer to throw into the Warehouse. No one checked for errors before they uploaded it I would guess.