X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Cam-AntiVirus: no malware found
X-Cam-ScannerInfo: http://www.cam.ac.uk/cs/email/scanner/
Message-ID: <1403918513.6474.37.camel@pcjc2lap>
Subject: Re: [geda-user] pcb: Patch for arcs with different radii for x and
 y on screen
From: Peter Clifton <pcjc2 AT cam DOT ac DOT uk>
To: Bdale Garbee <bdale AT gag DOT com>
Cc: geda-user AT delorie DOT com
Date: Sat, 28 Jun 2014 02:21:53 +0100
In-Reply-To: <877g422gyf.fsf@rover.gag.com>
References: <ojbt218fi23of8gryausfclb DOT 1403353431756 AT email DOT android DOT com>
	 <53A7E8F0 DOT 8020905 AT philippklostermann DOT de>
	 <1403800440 DOT 25929 DOT 14 DOT camel AT pcjc2lap>
	 <20140627112707 DOT GB21723 AT visitor2 DOT iram DOT es>
	 <1403900109 DOT 6474 DOT 8 DOT camel AT pcjc2lap> <877g422gyf DOT fsf AT rover DOT gag DOT com>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.10.4-0ubuntu1 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On Fri, 2014-06-27 at 15:14 -0600, Bdale Garbee wrote:

> Real-world blind and buried vias always connect a range of layers from N
> to M.  The tricky bit in my experience in large-layer-count boards was
> always when there were multiple buried vias with the same X-Y
> coordinate.  In other words, something like layers 2-3 and 6-7 connected
> in an 8-layer board.

Hmm, turns out there is such a thing as a layer1-3 skip via.

See:

http://yamamoto-mfg.jp/original19.html

-- 
Peter Clifton <peter DOT clifton AT clifton-electronics DOT co DOT uk>

Clifton Electronics