On Thu, 08 Jun 2017 14:09:04 +0100, "Dave Plowman (News)"
wrote:

In article ,
Mark wrote:
Of course, but unless you are skilled / trained / experienced or just
naturally good at something, for many there will be an element of
'trial and error' involved.

OK. But there's a limit to the amount of "trial-and-error" I am happy
with.

It makes sense with anything like this to draw it out to scale first. Does
take some time - but far easier with a decent CAD etc programme than doing
it by hand. You also get a good ideal of how well balanced etc it looks.
Not so easy when done on the back of a fag packet.

Draw what out to scsle? This sub-thread is about Operating Systems
;-)