Rout parallel slots to perfection
SPECIAL OFFER: - Limited Time Only!
(The ad below will not display on your printed page)

Free Year + Free Gift! Order NOW and get 1 FREE YEAR of Wood® Magazine! PLUS you'll get our Great Projects for Your Shop guide instantly! That's 2 full years (14 issues) for the 1-year-rate – just $28.00. This is a limited-time offer, so HURRY!
(U.S. orders only) (Click here for Canadian orders)

Email:

First Name:

Last Name:

Address:

City:

State:

Zip:

100% Money-Back Guarantee: You must be pleased, or you may cancel any time during the life of your subscription and receive a refund on any unserved issues – no questions asked. Wood® Magazine is currently published 7 times annually – subject to change without notice. Double issues may be published, which count as 2 issues. Applicable sales tax will be added. E-mail address required to access your account and member benefits online. We will not share your e-mail address with anyone. Click here to view our privacy policy.
Wood Magazine

Rout parallel slots to perfection

I volunteered to make a tally board for my bridge club, and my plan to use sliding dovetails for each player’s name block seemed so simple. To lessen the strain on my router and prevent the dovetail slot from packing with dust, I decided to precut the slots with a straight bit, then rerout them with a dovetail bit. But how could I ensure dead-on repeatable spacing for 20 slots?

To solve the dilemma, I fashioned a subbase for my router from 1/2" birch plywood, with a  3/8x5/16" hardwood guide dadoed in place on the bottom, as shown in the illustration below. The distance between the guide and a 5/16" straight bit mounted in the router equals the intended spacing between the slots.

I routed the first slot with a 5/16" straight bit in my table-mounted router, then used the same bit in my handheld router, with the subbase’s guide in the first slot, to rout the second slot. The second slot guided the router for the third slot, and so on, until I had cut the number needed.

Next, I switched to my dovetail bit, and set the cutting depth so as to not widen the original 5/16" slot. I used the second slot to dovetail the first slot, then rerouted the remaining slots into dovetails, using the adjacent slot as a guide.

The jig worked like a champ, saved me a lot of time over alternative methods, and the results were flawless. Before you try this, you’ll need to make some test cuts to figure out the precise relationship between cutting depth, dovetail-bit angle, and straight-bit diameter to make sure the slots will work for your project.

—Charles Hoffman, Ellicott City, Md.


 

shim

Wood Magazine