Dividing polylines

Hi

I often have to place a number of holes in manholecovers for shipbuilding.
I have a polyline made from to halfcircles combined with straight lines (
not an elipse ).
When I divide it in segments, one of the segment-endpoints ( holes ) is
placed at the startpoint of my polyline, and it is always an endpoint of one
of the straight lines.
An equal number of holes, should place a hole in each outher quadrant, but
not always in the intersection between the halfcircles and straight lines.
I would like to be able to control the startingpoint of my polyline, in
order to place one hole at the 9 o'cl quadrant.
I have succeeded a couple of times, but can't seem to do it again.

Would be greatfull for a little help.

Martin

 

Be sure your composite polyline is continuous and closed (PEDIT if
necessary); then just BREAK it at the nine o'clock position, which will
define a pair of new "endpoints" including the one where your first hole
will be drawn.
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Thanks very much
I think I got right now.
Breaking the polyline at 9 o'cl quadrant, will part my polyline into two
parts. One from 9 o'cl to 6 o'cl on left side and the rest will be the
second.
Joining them again - selecting the big ( right ) part first - join - then
the other, will place the starting point at the 9 o'cl position. Reverse
order doesn't work.
I don't really understand, but it is working.
Thanks again.
Martin


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