oo so many moons ago , when I were a lad.
I had the misfortune to work in a Funeral parlor , where the guv'nor
bought in almost all of the casks.
Most were recycled wood - ie chipboard nicely venneered, I had to polish them up before fitting the hardware.
The custom jobbies - fielded panal heavy on the mouldings
were made outta solid -did they cost a bomb or what iirc :shock:
Generally the guv said for the specials - when he ordered them,
"6 planks by 6' or 6'6", plus the wrapping" if it was a larger person he generally added another 2 planks to the order, and the maker got it right most if not all the time.
Joinery is simple - butt joints with loose tenon the length of board, dowelled head and footers. All wrapping screwed on from the inside, handles screwed or bolted through a backing pad to allow for the wieght and not fall off
seen it once gawd did we laugh or what 8)
Then into the spray shop, stained and sprayed - left over the weekend generally before the stuffer came and lined it out ready for the body.
Hope this is of some use, reckon if the Funeral homes can charege up from grand to more then 8 or 9 K your in with a chance.
all the best
HS