Dry-assemble the two door frames to check the fit of the joints. If they are too tight, use a chisel to pare away excess wood; if any of the tenons extends beyond the outside edges of the stiles, sand it flush. Then spread glue on the contacting surfaces of the rail tenons and stile mortises, and assemble the frames. Use three clamps to secure each assembly, aligning one with each rail and centering a third between the stiles; protect the stock with wood pads. Tighten the clamps a little at a time until a thin glue bead squeezes out of the joints (above), checking the frame for square as you go.
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