I made another thing today. I like the Spanninga XB** fender-mounted tail light a lot. It's small, more than bright enough to keep you "legal" after dark, easy to install on a fender and quite affordable; but it needs a bash guard to be truly complete.
When I added the piece of bicycle spoke for the top of the guard, I made loops for the mounting bolt and for the joining bolt in front, and then flattened them both to reduce the stack height on those as well. Because my bench vise has a small "anvil" platform, flattening these pieces with a few well-placed hits from a hammer was pretty easy.
Then, I began putting everything together.
First, I applied the lower loop of the spoke to the connection of the two curved Erector pieces in front, a little like a wrestler's award belt.
Then, I brought the other loop over and behind the light, and looped it onto the fixed bolt, then pushing the fixed bolt through the back of the guard frame and the fender.
Finally, I put some Loctite on the threads, put ion a washer and the nut, and tightened everything down securely.
The end result? A funky, functional bash guard for virtually nothing that took me about twenty minutes to make and install.
I left enough room in front of the light for my fat thumb to push the switch, or to unscrew the front plate to change batteries. Plenty sturdy, looks a little odd but it works.
And the spoke is thin enough that it doesn't really block the light at all.