Brian Lawson wrote:

On Fri, 30 Apr 2010 15:54:19 +0100, Chris Wilson
wrote:

My maths is appalling, I am sorry to say. Yesterday I wanted to work out
the X and Y axis movement on a milling machine to drill two holes opposite
one another skewed 45 degrees from the vertical at a known PCD . I had the
machine zeroed on the centre of the hole around which these drillings were
needed. Took me ages as I have forgotten most of my Trig and I couldn't
find a suitable calculator Is there any easy to use engineering software
for this sort of thing? It's at times like this a CNC machine seems
wonderful Ta!


Hey Chris,

Here's your guy !!

http://www.myvirtualnetwork.com/mklotz/

Brian Lawson,
Bothwell, Ontario.

ps..."centre" ??? Where are you?


BOLTCIRC.ZIP is the program you want from Mr. Klotz's site. You will have to unzip it and
run it as a cmd line program. Works fine. The output data is placed in a file
boltcirc.dat that you can open with notepad.

Keep in mind that 0 degrees is at 3 o'clock for purposes of orientation 90 degrees at 12
o'clock.

I use Machinist Tool Box PDA on my palm for this but I *can* do it the hard way, just


Wes