Hello again. Lets start with a reminder of what the Inverted World pattern looks like
I don’t know if you can see from this but the pattern consists of only 3 (three) different types of piece
Labelled here as A, B and C. Both of the B’s in this picture are mirror images of each other.
To complete the pattern we need 4 x A ( 2 black, 2 white), 8 x B ( 4 black, 4 white) and 4 x C ( 2 black, 2 white).
You should also be able to make out from the first picture that if you divide the pattern in either direction diagonally that one half is simply a 180° rotated version of the other. To this end I will only be routing half the above number of parts, assembling them into a pattern and re-sawing the result to make the whole pattern.
Confused yet? Gooooood.
Now as I said I’m going to be using my Circle Routing Jig for the Router Table. Here’s the Jig
Just the perspex (plexiglass) thing with the metal post in it. Not the Hardboard (Masonite) sheet. Thats just there to make things clearer. My workbench is well used and abused.
Here’s my router table
and a detailed underside pic showing my ancient Hitachi M8 1/2” router and the car sissor jack I use as a height adjuster (from a Mini, as in the original film, The Italian Job).
The above pic showing the pattern pieces is the basis for the drawing of the template I will use, in conjunction with the Circle Routing Jig, to cut the pieces. So
This is transferred onto a 6mm piece of perspex with a knife and dividers, so
This shows the Jig mounted on the table (with two M8 threaded locking knobs) and the template located on the metal pin
Basically what you do is attach a blank of your chosen wood, slightly larger than the size and shape you want to route it too, to the underside of the template with double sided tape and rotate the template past the router bit. Here is a picture of me sizing up some Ebony in preparation for this
I’m obviously going to trim it down a bit on the bandsaw before I start routing. That stuff is expensive.
To those of you unfamiliar with this type of routing technique this may sound like nonsense at this point. Suffice it to say that all will become clear as soon as I start routing the pieces. Thats for part 3. though. Its Friday night. I need a beer or three, so thats all for now.
Be seeing you
-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com