The traditional method of fixing the hammer on the handle is wedging. Over time, however, the knot loosened and it is necessary to change the wedge or pen.
I suggest to fix a clogged wedge with a screw or rivet passed through the bore in the sidewall of the through hole.
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HECK WITH THE FUSE
To turn the latch in a secure lock will help you handle the handwheel from the tap.
NOW NOT COME OFF
There are many ways to fix the firing pin of the hammer on the wooden handle so that it did not come off during strikes. Here's another simple technique: in addition to the usual wedge...