I have made many vent picks out of Coathangers. The steel is too soft to spark- a safety issue-- and it can be easily formed using a propane torch, and a vise, and pliers. I cut a length at least 5 inches long- the length is your decision-- then hold it with pliers while I heat it red hot. I pound it with a sledge into a square, then clamp one end in my bench vise, and twist the rod, keeping it red hot with the torch. This gives it a decorative appearance. YOu can vary your decorations any way you desire.
I then flatten one end with my hammer, so that it can be made into a circle, or "heart" for a Handle. The wire will heat weld to itself, if you clean the two connecting surfaces with a fine file before heating and beating them together.
The working end, is filed to a "Point", with a tapered shaft long enough and small enough to fit through the TH, and extend across the bore to the other side of the barrel. Then, I round off the POINT, and file "flats" on opposite sides, to make a paddle like vent pick. The two sides that are flat allow me to move powder by just twisting the pick in the TH.
If you want to put a pick in an antler tip, then drill a hole smaller than the rod used, heat the rod up to red hot, and run it into the antler hot. It will cook the antler a bit doing this, and that will STINK :barf: , but the rod will stick permanently in the antler, unless you shatter the antler with a blow from a sledge hammer, or heavy rock.
If you want to avoid the odor, then use super-glue to glue the antler tip to the pick.
You might consider drilling a hole in the tip so that you can run a leather strap through it to hold it to your bag strap.
When I finish a vent pick, I heat the entire pick up red hot, and drop it in a tin of motor oil. The oil puts a black finish on the metal, that inhibits rust, and provides an even coating. If it every wears down, its simply a matter of re-heating the rod up again, and dropping it back in some oil.
OR, I have simply cooled the red hot rods by spraying them with WD40. The oil acts the same, coating the rod with a nice even black finish.
I have large wide hands, and my longer picks make it easier for me to control them in use. I found that I had no trouble selling the rest of those I made to others, who also liked the control they had over the short little wires they had been using.
I keep one pick attached with a leather string to my bag strap, and have a second one that holds the top of my Voyageur's wool cap to the turned up opening. The second one has been " Loaned" to other flintlock shooters on more than one occasion.