Ajoeiam and Ken , well, there are several things to do to get plans
There is a
very nice set in
Popular Mechanics magazine
February 1969. You can usually get a copy from the local library or find a digitized version on the net I think
View attachment 139893
These AND MINE are for a NON-Firing models !
The Cannon I built was a compulation of several drawings and pictures and done in Brass
There was after all, thousands of cannons made and they varied slightly
from one another , especially with Trunion location which was on the bore centerline
on some and below centerline on others. ( mine is below )
Here are the old school prints given to me some 40 years ago.
They were in bad condition when I got them and marked up - just scale your desired size
They would never have these prints in a high school today, but they did during WW II
There is little difference in 24 or 32 # pieces, in the real world the 24 # has a 5 3/8" bore
and the 32 # has a 6 1/8" bore , so scale the barrel size to the bore
Rich
snip (plans)