Fixed Base Router Baseplate Cutting List

Material

Clear acrylic

Phenolic

Part Qty. Dimensions Sole plate I ft" x 6" x II Va" Heel plate I ft" x 6" x 8ft" Hardware

6 flathead machine screws. 10-24 X Va"

1 mushroom-style plastic knob, 2Yu* dia. with 3A" threaded insert; ¿MPB-6 from Reid Tool Supply Co. (800-253-0421)

2 plastic spacers. '/>" O.D. x W I.D. x Me" thick

I flathead stove bolt. W dia. x 1V?

FLUSH-TRIMMING BASEPLATE FOR FULL-SIZED ROUTER

yf Mushroom-style knob r

BOTTOM VIEW

Baseplate-mounting screws ft" 1

ft" 1

Baseplate-mounting screws

Knob-mounting bolt Assembly screws

PLATE LAYOUTS FOR FULL SIZED ROUTER

SOLE PLATE

Countersunk V\s holes for mounting screws

HEEL PLATE

ft" clear acrylic

Countersunk V\s holes for mounting screws ft" clear acrylic

Assembly screw holes.

tapped for 10-24 machine screws

Assembly screw holes.

tapped for 10-24 machine screws

W clearance hole for mounting screw

W phenolic

Countersunk Vi6m holes for assembly screws

Countersunk Vi6m holes for assembly screws

W phenolic

Countersunk W hole for knob-mounting bolt

perfectly for assembly, you muse drill them in both plates simultaneously. Stick the two plates together with a couple small squares of carpet tape.

Lay out the locations of the scrcw holes. If you arc-using black phenolic, mark the spots with a punch or awl. Drill the holes with a «25 drill, which is the correct size for lapping 10-24 threads. Drill the holes on the drill press so they will be square.

If the heel plate covers any mounting-screw holes in the sole plate, you will need to drill clearance holes through the heel plate. Now is the time to locate these holes.Guided by the mounting-screw holes in the sole plate, drill through the heel plate.

4. Tap the holes in the sole plate. Use a 10-24 tap. The procedure, if you've never done this before, is detailed in the feature "CuttingThreads" in the appendix. Chuck the tap in a tap wrench. Apply the appropriate lubricant to the tap. insert the tap's tip in the hole, and turn the wrench to start the threads. Make sure the tap is square to the plate. Each couple of turns, back the tap up a quarter- to lialf-turn to break up the chips.Tap all of the assembly holes in the sole plate.

5. Redrill and countersink the holes in the heel plate. The holes in the heel plate are too small for the assembly screws. Drill them with a lie bit. then countersink them. Be sure to bore the countersinks into die surface of the plate that was exposed when you drilled the holes in Step 3. (If you make the countersinks in the wrong side, the holes probably won't line up when you try to assemble the plates.) Bore the countersinks deep enough that the scrcw heads will seat below the plate surface.

If you have clearance holes to drill for router-mounting screws, do that now. Measure the screw head, and bore a slightly larger hole in the heel plate.

6. Assemble the baseplate. This is as simple as driving a few screws. Place the two plates together, insert a •Vi-inch-long 10-24 flathead machine screw into each assembly-screw hole, and tighten it with a screwdriver.

7. Mount the knob. I used a mushroom-shaped knob with a /'»-inch insert. It is mounted on the baseplate with a VInch-diameter, 11 .'-inch-long flathead stove bolt. To elevate the knob from the plate, I used a couple of inch-thick plastic spacers bought at the local hardware-store.

Drill the mounting-bolt hole, then countersink it. A v8-inch stove bolt has a darn big head, so a big countersink is required. You may be able to substitute a large V-grooving bit in a plunge router for this job. Again, the countersink must be deep enough that the bolt head seats below the plate surface.

8. Bore the bit opening. Depending on the router, you can. with caution, bore the bit opening with it. Chuck the bit in the router, then scrcw the plate to the router.

Clamp the plate on top of scrap. Switch on the router, and work the cutting depth adjustment mechanism to plunge and retract the bit. thus cutting the opening.

An alternative approach, one that I used, is to bore the opening with a Forstner bit or a hole saw.

Dress up the rough baseplate edges. Round the square corners with a roundover bit in a table-mounted router. Stand the baseplate on edge, and back II up with a scrap pusher. To make the cut, feed it along the fence and across the bit.

Was this article helpful?

0 0
Woodworking Tools and Installation Tips

Woodworking Tools and Installation Tips

There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.

Get My Free Ebook


Post a comment