TOOLS AND THE SHOP > WELDING & METAL FABRICATION

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Lance:
This tool in the configuration shown is the solution to stuck receiver type trailer hitches.
It has multiple names including Jazuz that hurt, and is part of a 50 year evolution of dead blow tools.
It is also an educational device used to teach young bucks who know everything how little they know.

Total weight of the tool is 46 pounds as shown.  The slider is 21.7 pounds with 11 of them being steel shot contained in the coaxial housing.  Shaft is 1 3/8" with 4" of thread on one end.  The shaft was a spare from a machine that went to China to become a paperclip.  The hilt is a former steel gear that was in a pile looking for a new job. 
The hilt/anvil is welded to the shaft with Eutectic ToolWeld rod, similar to 309 stainless with superior ductility.  It is also pinned for additional strength.

Ends used with the hammer either thread on or are isolated with a plastic sleeve to prevent thread damage.
The striking end of the hammer is replaceable when needed.

After the hilt/anvil was welded and run on a vibratory stress reliever for 24 hours the shaft was chucked up in a lathe and the striking face trued up. 
Prior to painting the tool was tested by 2 available young bucks weighing around 275# each who played football in school.  They were sure they knew how to use it.  They went forth into the sun to extract a Reese plugin from a receiver.  Using the well understood team approach 1 works as 1 watches, we determined a former football player to be good for a maximum of 20 strokes.  We also determined they needed a long rest period after 226 strokes.

2 old farts took the job over and after all parties agreed the plugin hadn't moved based on inspection of reference marks in the die applied to the hitch prior to hitting, removed the plugin in 11 hits by employing a pair of wood wedges and a milk crate in the operation.  Once again age & skill whupped the snot out of youth and strength.

slip knot:
That's a serious looking device of destruction there. I like it. ( thumbs up emoji here)

skfarmer:
 good solution. i have seen them split open and welded shut again because of being stuck. i can only hope that you retired to a spot in the shade with a notebook and an adult beverage to keep track of how many strokes were applied. :))

gtermini:
I'll add that to problems I had no idea existed. Us West Coasters take no salt for granted. One snow flake shuts everything down and we wait until it melts.

Good looking solution to the problem.

Greyson

goodfellow:
Yup -- that design makes perfect sense (once you see it -- LOL). Coming up with the design and actually fabricating it, is another issue. Very well done!

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