Here is the Beta Ray Bill Stormbreaker Hammer Version2. This version is more screen accurate and closer related to the original comic book design. The model comes in three parts and the handle has room going down the middle to fit a 3/4" pvc tube or wooden dowel to add support to the handle
UPDATE: I added a new handle after printing I seen that the inner diameter was to small to fit into the hammer so that has been corrected
UPDATE: I added an alternate handle base, so now there is two options
