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(Click image for larger view)
Drawbore Pin Pair
Drawboring is a great way to make a strong mechanical joint. A wooden
pin is hammered through slightly offset holes in the two pieces, and
pulls the joint together. You use Drawbore Pins to pull the joint
together first (with some force and a twisting motion). This eases the
edges of the hole making driving the wood pin easier. You can also
disassemble the joint if you want to work on the fit some more before
permanent assembly.
O-1 Tool Steel, Rockwell 60-62. Diameter at base of pin .440" (1.12cm)
tapering to .110" (2.8mm) at the tip. Lenth overall 12".
Sold in pairs. To pre-assemble the four parts of a door
frame, two pair are handy.
To view a video of Chris Schwarz demonstrating the use of Drawbore Pins, click here.
Pinned mortise cut-away.
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