I don't think I could have titled this thread any better, there has definitely been some challenges in this build. Some things have been easier than I expected and some harder. Thanks for the encouragement and compliments along the way.
Last night I etched the blade and fittings in a mix of 40 ounces of water to 8 ounces of ferric chloride. I etched twice for 10 minutes each time. After each etch, I rinsed with windex and scrubbed the residue off, then washed with dawn dish soap. After the final etch, I cleaned everything up with 2000 grit paper on a steel backer.
After the final etch.
Next, I etched in very strong instant coffee.
Results of the coffee etch.
Here it is assembled. All that's left to do is glue it all together and make the sheath.