I built a modified version of the
Jay Bates miter saw workstation with 19mm plywood and used the hinged table extension idea from
DIYTyler. The T-track is made from two sections of
915mm Veritas T-track and the
Starrett 1/2" x 12' Right-to-Left Imperial/Metric adhesive steel rule.
I routed a channel in the face of the workstation to fit the T-track. Then I drilled and countersunk 3mm holes in the part of the T-track that will be covered by the Starrett tape. The T-track is attached to the workstation face with 3x20mm screws every 100mm along the length of the track. There is a gap between the workstation table and the stop block to allow for any sawdust that escapes.
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Most of the work can be done along the 1200mm of the main table, but I have a hinged extension that can be raised to add an additional 800mm of support.
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If I need to measure closer than 440mm to the blade, I have another flip out track that will allow me to get as close as 300mm.
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It's not an ideal solution because the four rare earth magnets used to hold the extension in place are not as strong as I hoped they would be. As long as the stop block straddles the hinged joint, the extension is stable and accurate.
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The stop block is much larger than it needs to be, but I made it from three layers of 19mm cutoffs. The miter saw fence and table are proud of the workstation by about 2mm on each surface, so the stop block has to be large enough to accommodate the offset and still be square. The stop block is attached to the T-track with a M6x60 carriage bolt, a washer and a M6 knob. I had to file two flat spots into the edge of the bolt head so it would fit in the track.
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The back of the block has two hardwood strips that fit in a dado in the block and ride in the track. The cursor is a hair from a bristle brush glued to a piece of scrap 2x25mm aluminum strip. Ignore the two holes in the upper left corner. They were practice holes to see if I could safely use a carbide end mill in my drill press to cut the hole for the plastic insert (it worked). The strip is recessed into the back of the stop block so it does not touch the T-track.
I cut a small piece of clear plastic to fit in the rectangular opening, but did not do a very good job of gluing it in place with CA glue. I tried to glue the plastic on all four sides, but realized too late that it only needed to be secured in two opposing corners. The plastic is used to protect the cursor.
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