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Jeff Greef Woodworking

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Page 3, Curved Cope Work
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STEP SIX- COPE

Next I set up the cope at the router table, carefully adjusting its height to match the location of the sticking on the parts (jump ahead to photo 18). I also set up a second router table with a flush trim bit. This second table is necessary because the cope procedure requires that you go back and forth between a flush trim cut and a cope cut, and you don't want to be changing bits every five minutes. Also, once the cope is set up, you don't want to change it. By not changing it you ensure that all the cuts made with it will be exactly the same.

Photo 11- Set up the cope, and make
cope blocks that fit against stuck edges
to back up the cope cut on the end of
the part. For straight ends, such as
the top rail, scribe the line of the rail
end onto the cope block. Flush trim to
that line.
Photo 12- To cope the rail end, install
a straight fence on the cope setup, and
push the part along it with the cope block
in place to back up the cut.

For the cope on the top rail, I first cut out a cope block to back up the sticking during the cut. Using the cope block template with a radius matching the rabbet radius of the top rail I flush trimmed the cope block to the template, then coped it on the other router table with the cope cutter. Next I placed it on the sticking at the end of the rail (photo 11) and scribed a line across its top to continue the straight line of the rail end. Then I removed the cope block and flush trimmed to the scribed line by attaching a short, straight length of plywood to the cope block with nails. This short piece of plywood is the template that the flush trim bearing rides on. Finally I attached a straight fence to the coping router table and pushed the rail end through the cut, holding the cope block to the sticking during the pass to back up the cut and avoid tearout on the sticking (photo 12).


Carriage Tenoning Jig


Heavy Duty Tenoning Jig


Jet Tenoning Jig


Photo 13- Join the door frame rails
and stiles with loose tenons. Cut slots
for them on the table saw with a tenoning
arrangement. Glue up the frame.

With the top and bottom rails coped, I cut slots for loose tenons in the rails and stiles and glued up the frame (photo 13). I made these cuts on the table saw with a tenoning jig, but you could also do them on the band saw referring to a fence. Keep the cuts below the sticking. Next I cut copes on the five bottom pieces to fit them to the bottom rail, stiles, and each other and glued them in place. When I needed to apply clamping pressure to an edge with sticking, I made cope blocks, put them on the sticking, and put the clamp on the block.

Thus far all the copes have been on straight edges cut at 90o. For the curved internal parts, many copes will be along curves joining at odd angles. To orient these parts, I used the full scale drawing.

Photos 14 and 15- Place the frame over the drawing, suspending it above
with spacers. Place curved parts beneath, with cope blocks on both sides.
Align curve part relative to frame and previously fitted parts using drawing.
Scribe rabbet arc from fitted part onto cope blocks of new part below.

Each curved joint must be done separately. Let’s look at how I did one to see the procedure used for each. First I made cope blocks to fit on either side of the part to be coped. Then, along with the cope blocks, I located that part in place on the full scale drawing. Next I placed the door on top of the part, suspending the door at its corners with blocks (photos 14+15). I located the door directly over its corresponding lines on the drawing. With the parts located this way, the rabbet on the part that is being joined to is now lying in location directly on top of the part about to be coped and fitted to it. I made one final check to see that all parts were aligned and then scribed the line of the rabbet across the top of my part’s cope blocks and the part itself (photos 14 and 15).

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