I first painted the baseplate with white emulsion so that I could see my own markings. Then I had the challenge to draw a circle of 17.75" radius. Pairs of compasses simply don't come that big in my house!
|17.75" Radius pair of compasses|
|17.75" radius circle|
(and that's why I painted it white!)
And then all that was needed was to cut it out!
I dismissed gas-torch cutting; it is quick and exotic but needs a template making beforehand to guide the torch and leaves rough edges which need a lot of tidying up with a grinder.
The only other method left to me was to use a jigsaw with hack-saw type metal cutting blades. In actual fact, I'm glad I chose this as it is surprisingly accurate (to about 0.5mm, and yes I can do metric when I choose!) and doesn't require other tools to be made beforehand and little cleaning up after the cutting.
|Cut that out!|
Whilst the jigsaw proved accurate, fast is not a word I would use to describe it! (Also on YouTube).
It took most of a day to complete the cutting (but it was accurate!).
|Nearly there,only the flap's cut-out to do|
To be continued!