Jim
Wood's jig for building planks for the DN with proper camber
While the jig is designed for an 8 foot plank, it will handle a 10 foot plank also.
While the jig is designed for an 8 foot plank, it will handle a 10 foot plank also.
| Jim
Wood's jig for building planks for the DN with proper camber
While the jig is designed for an 8 foot plank, it will handle a 10 foot plank also. |
[Return
to Top] A small error in process was made. The outer 5/16 inch x 7.5 inch planks were made up of two 3.75 inch wide planks which were edge glued to form the larger plank. A major error was not performing the edge gluing first. I felt performing the edge gluing while gluing the outer planks to the core would ensure a good fit. But what happened was that glue was forced between the inner edges of the outer planks. Some of that adhesive was then forced through a narrow "tunnel" and off the ends of the composite structure. Some of that adhesive was trapped under the board which later necessitated some extra sanding. |
Photo shows the gluing of the first two
layers, bottom layer of 5/8 inch ash and inner core of 3/4 inch which
pine. Later the top layer of 5/16 inch ash was glued to the
top. This could have been done in one operation. But the
outer two layers consisted of two planks each for a total of four
planks, plus, the core was 1/4 inch too narrow so an additional piece
had to be glued to that board. Due the the limited selection of ash, Dale Johnson and I could not locate a usable 7.5 inch wide ash plank. So two boards were selected and cut to one half the total width. Then the 3/4 inch planks were sliced into four 5/16 inch planks (after running through a plane). A tab on the ash was left sticking out for temporary clamping. Later, this tab was trimmed off. |
