That's looking really cool.
One thing I've wondered though...the half-round bearings or whatever the correct name is, where the cannon rests on the carriage--is that enough to retain the cannon in place? Or is there a top part to keep it retained?
Looking good, Nick. Keep us posted but looks like quite a bit of headway has been made. Don't worry about that other hole. Once you have it filled and covered it won't matter. This is a one-off, and it has to be designed/engineered as you go. Looks good, can't wait I see the vid of you shooting it.
Back up the bus! One-off ?!? ... I though this was a prototype and that IndyGunworks was going to start into production when this was done ... dang it, now I'll have to spend my money on something else.
Seriously, this has been an incredibly cool thread to watch. When the cannon is complete is there going to be a public demonstration for the INGO community? A meet and shoot with cannon and other black powder firearms sounds simply awesome!
silver and deming drill drill bits are mostly used on metal. generally a 1/2'' shank and 3 flutes and 6'' oal. it wont hurt it drilling in wood.