@DesignFlaw06 See if this works better with Estlcam.
The original already had some of the parts as paths so I only had to use Stroke to Path on a couple. The challenging part is the rectangle. I used Stroke to Path, duplicated it then deleted the outside nodes on the duplicate to create a rectangle that represented the white area on your original file. I then used Difference to remove that area from the middle of the L. Finally, I used Union on all the parts to combine them into one object. Hopefully this helps.