John,
I wonder about your comment on the origin of mitering. Have you ever
tried to radius tape without bunching and bulging with the tape eventually
creeping and pulling from the mylar? I would be sure that the origins of
mitering started long before advent of CAD systems. As a matter of fact I
know it did because I was mitering taped PCBs long before there were any CAD
systems available to any but the richest Fortune 500 companies. There were
other taping systems which would allow radii to be used but they were almost
more of a pain then tape, especially for changes.
Brad Velander,
Lead PCB Designer,
Norsat International Inc.,
#300 - 4401 Still Creek Dr.,
Burnaby, B.C., V5C 6G9.
Tel. (604) 292-9089 direct
Fax (604) 292-9010
website www.norsat.com
> -----Original Message-----
> From: John Haddy [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 13, 2001 8:43 AM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Microwave PCB layout
>
<SNIP>
> With regard to beveled corners, I was shown a reference not
> long ago that
> discussed the origin of beveling. It turns out that beveled
> corners were
> developed as a workaround because arcs couldn't be defined in the CAD
> systems available at the time! Radiussed corners are supposedly better
> than the approximation given by a beveled corner.
<SNIP>
>
> Cheers,
>
> JohnH
>
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