When I wore a younger man's clothes, I used to drill holes in 1/25th distributor caps "by eye". Those eyes are now 65 years old, so with the help of a machinist buddy we came up with this jig to evenly space those darned 8 holes with a coil wire hole in the center.
On the opposite side of the jig is a center through hole to locate the coil wire hole...then flip over the distributor (3/16" dia stock) and put in the "pointer", work your way around with a pin vise and DA DA!
This morning I had a thought and tried it out. I took a "flux brush" (for applying solder when sweating copper tubing) and trimmed the bristles down to about 1/4" long. This worked pretty well to burnish BMF into tight crevices. Its stiff, so you have to be careful with it. I'm sure it will scratch paint if leaned on to heavily.
After commenting on how neat the idea was "gluing two Xacto blades together was...(Billy's '62 Chevy paint under "on the workbench")
I wanted to try to make real thin (to scale) "stainless interior trim".
Tried it, it worked, but now...HOW THE HECK WOULD I GO ABOUT GLUING THIS STUFF DOWN? I tried to use bare metal foil, but it simply ripped up trying to remove it so I ended up using Reynolds aluminum foil.