Making a Circle Cutting Jig





Introduction: Making a Circle Cutting Jig

Hi, this is the design which I made for making circle by using routers. It is simple to make. This tool is used for cutting a large circle out of wood.

Step 1: Things Need to Prepaired

1. Plywood or hardwood panel (9mm thick)

2. A handle.

3. A washer ( >= 20mm)

4. A nut

5. A nail (2mm x 29mm)

Step 2: Print the Layout

Dowload the PDF file below.

Print exact whole scale of PDF file or print piece by piece if you just have a small printer (also exact scale)

Step 3: Glue the Layout Into Plywood or Hardwood Panel.

With normal glue. It's easily get it out when you've done cutting shapes out of the panel

Step 4: Cutting, Assembling

Using bandsaw or jigsaw, drills to cutting shapes

Look the picture above to do the assembling



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We have a be nice policy.
Please be positive and constructive.




While I agree that it's a great 'ible, it would have been nice to have
the measurements in metric and non-metric (US) ;) for those of us who
are metrically-challenged (lol) and don't have a printer. Now I gotta go
and figure out what all those CM & MMs mean!

Google it. 1 inch = 2.54 cm = 25,4 mm. Next time, I'll use measurements in inch.

No biggie .... that was said halfway in jest ;)

I think it will be better to stick to system convenient for you (or one used for the project). Exact conversion from one system to another usually gives inconvenient numbers. For example, 120cm = 47,244094488 inch. I doubt that such a numbers will be convenient to use even for those who used to Imperial units. Perhaps providing other units for reference (like 120cm = about 47 inch) might be a solution suitable for most cases.

U can download a free unit converter app from google play for android phones or the equivalent for iPhones, easy peasy. I love mine.

Get a metric measuring tape at your favorite tool source (online, big box store, local hardware store, etc). Takes all of the conversion out of it. I would recommend a pure metric tape and not a combo metric/SAE tape since you can't confuse your numbers then.

It's beautifully illustrated and the product looks professional, but those of us who are woodworking-challenged don't have a clue how to use the jig. Do you have a video or more illustrations that show how to use it?

I'am lazy. Sorry! Watch this video

Another suggestion: make two or three main parts (the long one) of different lenghts, so that you can use the largest one for really big circles, and the midsized or short one to make smaller circles. The nail can be replaced with a pointed Steel piece, held with a lateral thumbscrew, so that you can use the other parts on any of the long parts easily and quickly. Making the jig of transparent, thick acrylic, while more expensive, makes a more useful jig that allows you to actually see through it, which some times is useful (or critical).

I still keep a simple (and somewaht ugly) jig that I made for cutting several MDF rings, that needed to be stacked in order to mount the 6.5" speakers to the doors in my wife's car, as those needed to be thick enough (about 45 mm thick) so that in the end I needed 8 MDF 3/4" rings and 4 3/8" thinner rings in order to mount the speakers to the four doors of the car. That was needed because the door interior panels were located too distant from the door inside metal, so that installing the speakers directly on the metal door panel would have created a resonant cavity in front of the speakers and would have placed the coaxial tweeters too far from the grille openings. A lot of cutting solved by the use of the router together with the jig! Amclaussen.