You can also use a jigsaw, the way I've done it up until recently. In my experience, jigsaws make less than perfect round holes. Okay, it's not the jigsaw, it's the operator. There may be simple jigs one can use for making nice round holes with a jigsaw. But, routers are great for this stuff, esp. with MDF. I've just started using one for template and hole-cutting. Boy, it is very nice and quick and the edges made are really clean. I don't think I'll go back to using a jigsaw for this.
I'd look into getting a router and circle cutting jig if possible.
I'd look into getting a router and circle cutting jig if possible.
rtate said:
Plunge router, circle jig, and spiral up-cut bit.
While you can buy a circle jig, making one is as simple as matching the router's mounting pattern in a piece of scrap plywood, driling holes at the radiuses you want, and making a bigger hole to clear the bit. You can screw the inside cutout to something behind it, or stop your cut short of going all the way through, finish with a jig saw, and clean it up with a flush trim or pattern bit. Make three passes. It'll stress the bit less (there's not much metal in a 1/4" spiral bit's web).
The other reason you want a router is that it makes it easier to make perfect cabinets. You start with four sides that are the same height, two of which are thinner than the intended width in that dimension by two material thicknesses (probably .750"). Rather than trying to make the top and bottom exactly match that width or sand (MDF Is horrid) you can cut it 1/8" oversized and trim to fit with a flush trim bit.
Routers are a lot of fun; mine has become my favorite power tool.
SpeakerScott said:
I own a set. While they're nice, I've also made my own circle jigs for larger radiuses around 1.5, 5, and 12'.
After doing that I decided that $40 to save 10 minutes the first time and a minute each time I needed new diameters wasn't worthwhile.
The 1/8" dowel pin as a pivot is nicer than a nail but shouldn't run you over $1 at a decent hardware store.
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