This is the great axe used by the berserkers in For Honor. It will end up being about 5'9" when put together. Although it is missing the decorative design down the center of the shaft. For the straps you can use things like electrical/atheltic tape or some kind of fabric.
Rafts:
Doesn't Matter
Supports:
Yes
Resolution:
.2mm
Infill:
35%
Notes:
The head and butt of the axe will need supports.
I use 1.2mm wall thickness but use whatever works for you.