Left Forearm
The assembly process for the rest of the pieces is very similar to that of the forearm. I sized the front-facing joint edge to match the width of the cover strip. I would hold the pieces in place using some blue painter’s tape, and then remove material from the back joint so that the piece fit me appropriately. Once the edges were trimmed, I would give them a quick sanding to smooth them out, and then attach the cover strips one side at a time.
Using this approach, I was able to quickly move through the left forearm…
Right Bicep
Right bicep…
Left Bicep
And left bicep…
While not pictured, I also added internal support strips to each joint, similar to what I did with the right forearm.