I half expect to get banished for this one, so is it ok if I say this was for educational purposes only?
Sorry for the gargantuan pic.
I can't make wood or bamboo last in my climate, too dry and any sort of miss or deflection shatteres them. So I got to thinking how one could still haft broadheads using primitive techniques and a bit more modern shaft material...pretending if you will...that it's processed cane or bamboo.
I took a quarter inch hickory dowel and glued it in to a piece of white oak, then reduced the diameter of the dowel slightly with sandpaper so it would fit inside a Goldtip shaft (.246 ID).
Glued this in to the main shaft by roughing up the inside of the main shaft and put in a few sizing coats of hide glue, followed by the foreshaft.
Hafted in a 225 grain single bevel made from 1084 steel.
I roughed up the last quarter to half inch of the mainshaft and wrapped sinew with hide glue around both fore shaft and mainshaft.
Eventually I'll repeat a similar process for the nock end.
The first prototype used a poplar dowel and the foreshaft snapped when shot at a 2x4. With a hickory core, this one is taking quite a bit of abuse. Even shot it in to a piece of pressure treated 2x6, went in a little over an inch and a half with no damage and took me a half hour to dig it out.