I removed all the blue and now my metal trim piece is finished. What I'll be doing later is using gun bluing to make this piece, along with the bolts and washers, a very dark blue color. This will match the previous project which should look nice together. Now it's time to do more wood working.
 

I drilled and tapped the two holes at the ends so now all the threaded holes are done. If you're shaking your head wondering about this operation, it works great if you don't put too much of a load on the threads. And in my case, I won't be.
 

On my pervious project, I used my router table with a flush cut trim bit to cut each corner. However, two of those corners had a little tear-out so I'm playing it safe here and I'm using my spindle sander. This method works great but you have to be careful when you get close to the metal trim piece and not sand it.

As you can see, I have all of my 1/4" bolts holding the trim piece to the base. But those bolts are not exactly what I'm looking for. What I want is to have 'square headed' bolts so they match my pervious project. That means it time to do more machining.
 

Back over at the mill, I'm going to cut each bolt head into a square. I placed a parallel under the threads to locate my bolt. Then I machined one side, deburred it, turned it over and machined the other side. Once that side was deburred, I clamped onto my newly machined surfaces and machined the remainder of my bolt heads.
 

I also machined the tops of each bolt so it doesn't have any markings on it. And last I used my belt sander with a well used belt and removed all the burrs from it. Now it's time to work on the washers that go with these bolts.
 

What you see between the arrows are a stack of 4mm washers. What I'm doing is using my lathe to remove the galvanized plating so the gun bluing sticks better.