ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Trip-Hammer Helve: an Oak Beam Hewn and Bored for its Pivot
The helve is the wooden beam of a trip hammer: the head sits on one end, the cams lift the other, and it rocks on a pivot between. Hew it from a straight oak log, bore it for the pivot pin, and taper the head end to fit the hammer's eye.
The picture: our diagram, helve with pivot, head and cam.
Intermediate
Two days
Instructions
1
1
Choose and cut the log
Choose and cut the log
Pick a straight, knot-free oak log a little longer than the helve and cut it to length.
Materials for this step:
Hardwood Logs (Oak, Maple, Beech)1 pieceTools needed:
Axe
Tape Measure2
2
Hew it square
Hew it square
Snap chalk lines on the ends and along the log. Score to the lines with the axe and hew the faces flat with axe and adze.
Tools needed:
Chalk LineAxe
Adze3
3
Taper the head end
Taper the head end
Shave the head end with the drawknife to a slight taper that fits tight into the hammer head's eye.
Tools needed:
Drawknife
Wooden Mallet4
4
Bore the pivot
Bore the pivot
Bore a hole square through the beam for the pivot pin, about a third of the way from the tail.
Tools needed:
AugerTape Measure5
5
Lever ratio
Lever ratio
Loading Jupyter Notebook...
Materials
1- Placeholder
This blueprint makes
Related Blueprints
These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.