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Thread: 2-3/4" Holes in Plywood Reply to Thread
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  Topic Review (Newest First)
05-14-2016 04:50 PM
05-14-2016 09:41 AM
Stick486 John, no links....
05-14-2016 09:20 AM
john60 I would use the following since I already own one. Works great for this application

The CRB7 arms your router with the ability to cut fully microadjustable dadoes, mortises, circles, and indexed grooves for faux paneling and shelving systems. (Clamp Guide Not Included)

In addition to that, the offset design provides excellent anti-tilt support, and includes an accessory support foot for routing narrow materials.

The CRB provides a simple and exceptionally quick way of accurately repeating a dado for indexed grooves in shelving systems and false panelling.

The CRB7 fits the majority of woodworking routers, and unlike similar jigs, it requires no screws or drivers to install, just slide it on and tighten the knobs.

Increased stability in turn leads to better accuracy and finish quality.

Use the magnetic pin stored in the base to rout precision circles and holes, even holes that are actually smaller than the base of the router!

Realize the full potential of your router in only seconds with the easy-to-install CRB7 Multi-Function Router Base.



See it in action:



MPower Combination Router Base - Overview

MPower Combination Router Base - In-Depth

Micro-Adjust Your CRB7 Router Base

Enhance Your Router with M-Power

M-Power CRB7 MK3 Multi-Function Router Base
05-13-2016 10:43 AM
Originally Posted by chessnut2 View Post
That's what I do on most all forstner cuts.
When I use a forstner bit I drill nearly thru until the pilot point just comes thru than turn the stock over and using the bits pilot hole as a guide drill the remainder thru. No tear out.
04-21-2016 01:00 AM
Herb Stoops
Originally Posted by patlaw View Post
Well, I just ordered the Forstner bit....
You will need a 1/2" drill motor to drill with a Forstner bit,if not using the drill press.

04-20-2016 09:53 PM
Originally Posted by patlaw View Post
I have to cut a number of 2-3/4" holes in 3/4" plywood. The options I'm considering are a Forstner bit, a hole saw, or an adjustable hole cutter, as in the picture below. The reviews on all of these products are all over the place. The Forstner bits look like they will dull quickly in plywood. Hole saws are slow to cut, but they're pretty durable. I've never used a hole cutter. For the record, I don't know how to sharpen bits, so I'd like to know which bit will last the longest. The hole cutter has a lot of appeal because it is infinitely adjustable. Which way should I go?
Forstner is my choice. Back it up and you will have no problems.
04-20-2016 09:35 PM
patlaw Well, I just ordered the Forstner bit....
04-20-2016 08:49 PM
jw2170 Use one of Harry's circle cutting jigs....

Easy, Peasy....

Or one of theses..
04-20-2016 10:12 AM
cocobolo1 I recently needed to cut several 2 9/16" holes in 3/4" plywood.

I used a sawtooth bit from Lee Valley along with a backer board on both top and bottom of the plywood.

Zero tearout anywhere, and the job took but a few minutes.
04-20-2016 08:21 AM
mgmine For 12 holes I would go with a hole saw. The fly cutter you pictured would also work but should be used in a drill press and they can be dangerous. The last tool I would drag out would be a router. By the time you have a template made you could have drilled all the holes several times over.
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