I recently built a set of display cases that had tamboured doors with 1/4-in. thick edges. I wanted the grooves in which they ran to be 1/32-in. wider so the tambour wouldn’t bind. To accomplish this I applied iron-on veneer edging tape around half the radius of my router base. To cut the groove I ran the router base along a template using a 1/4-in. straight bit. On the first pass I kept the router’s original base against the template. On the second pass I rotated the router so the taped portion of the base bore against the pattern, thereby adding about 1/32 in. to the groove width.

Andrew Dey, Wallingford, Conn.

Fine Woodworking Magazine, December 1985 No. 55

Fine Woodworking Recommended Products

Bessey EKH Trigger Clamps

Bessey EKH series quick-release trigger-style clamps are simple to use and maintain consistent pressure. Trigger clamps that perform the way you've always wished they would!

Buy at Amazon

Incra Miter 1000HD

One of many extremely accurate Incra miter gauges, this model offers 180-degree adjustment to 1/10 of a degree, and a long, straight fence with a telescoping stop system.

Buy at Amazon