I've had several people ask me how this plane works so, to
demonstrate, I made a pattern that utilizes its capabilities.
The top edges of the pattern will have 1/8" extra material to
allow for machining the casting. That means the center point of the
curcular cut-out must be 1/8" below the edge of the material.
You can double-click on any of the pictures below to see a larger view.
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1. |
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I started out by gluing up five 4/4 Basswood planed to 3/4" thick. |
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2. |
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Sand one side to make it true. |
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3. |
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Rip the other side on the table saw |
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4. |
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Sand that side to make it square and clean up the saw marks |
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6. |
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Sand the end to square it up. Repeat on the other end. |
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7. |
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Blank trued-up and ready to layout. |
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8. |
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These show the slide rails that will be used with the plane. I used American Black Walnut but any good hardwood like Cherry or Oak will do. |
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Use the table saw to remove as much material as possible. |
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10. |
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Saw cuts finished, now remove what's left using a chisel. |
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12. |
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Slide Rails attached using wood screws. Be careful that the screws will not penetrate into the area that will be planed. |
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13. |
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Note the rails are mounted 1/8" lower than the surface. This will allow the extra material on the casting so that after machining, the center of the circular cutout will be at the finished surface. |
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14. |
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Adjust the outriggers on the plane so that there is slight to moderate pressure on the slide spring. |
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15. |
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Move the cutting bit to the half-way point and set the length to just shy of the layout line. Don't try to make the finished cut in the first pass. Once this pass is done, I'll reset it to the final dimension and make a finish cut. |
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16. |
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Move the cutter to the side and adjust the plane's center assembly so that the cut will be centered in the layout area. |
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17. |
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Attach a scrap piece to the bottom that will be clamped to the bench to hold the piece. You can hold it in a woodworking or patternmakers vise also. |
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19. |
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Set the bit just above the work and begine stroking the plane back and forth along the rails. The plane advances the bit with each stroke by use of a worm drive and ratchet pawl that is driven by the handle's shuttling action.. Here the bit is just entering the work. |
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20. |
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The bit has advanced about 60 degrees |
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21. |
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About halfway through |
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22. |
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Done with the first pass. Extending the bit to the final size and making another pass will finish this feature of the pattern. It takes 247 strokes to move the bit the 180 degrees. |
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