When I left off, I had just finished one of the front lower control arms, shown here on the bottom. The arm on the top will be used in the rear, where I will be running a swaybar, and I cannot delete the swaybar mounting hole.
In order to form the shape, I made a steel-reinforced red oak hammerform.
This thing will take a serious beating under my 4x rivet hammer, so I welded the plates together in addition to the three bolts. I have been having some gas or contamination issues lately with my TIG setup, but I used this as an opportunity to practice on a part that doesn't really matter.
It's hard to capture in photographs, but I also dished out the oak since I will be boxing in the arm with curved tubing.
To form the pieces, I tacked a strip of 18ga mild steel along the form. Not only does the steel reinforce the oak, but it allows me to weld the piece directly to the form to hold everything in place under the intense force of the air hammer.
The parts still need a LOT of finish work, but the rough shape is complete. I'm not sure if these will clean up, but the form is reusable and I can easily hammer more.
A rough test fit confirms that it's close, but I have a lot of fine-tuning to do before they're ready to weld!