X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-Original-DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.com; h= content-type:date:from:in-reply-to:message-id:mime-version :references:reply-to:subject:to:x-me-sender:x-me-sender :x-sasl-enc:x-sasl-enc; s=mesmtp; bh=EeKKJoV6uasl/g3ZvWBpTIAEZsQ =; b=n0NzZkkqhKBxI3ccVfJpEL8YGgYIgqGs4PnF7pM3EPD6Ifekk+o4B1asR91 nXQTpc7VZ0a7kWEuvhjArlzk/ehwyMX93BZ3fuAtfopQiECgS9oV3wUmauue3rW+ 4b+Sj8o1SJzd4mO5gSkjjfp3LBFi3bJtZA3lw3Mq1XAgYkAY= X-Original-DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:in-reply-to :message-id:mime-version:references:reply-to:subject:to :x-me-sender:x-me-sender:x-sasl-enc:x-sasl-enc; s=smtpout; bh=Ee KKJoV6uasl/g3ZvWBpTIAEZsQ=; b=WqR56RxPQPA4odq6iWay+AMBoBCd3q5Amf D095vcVIhBvefBZBWzS03PJf/UWN5RNzrIz+NQDEvLwn+CKx+VTMjtraGmAT8d/w z56xwjVAttR/s7dKrsP61VpYRKJ/4lq896OcnORH3sMXxgm4IKEwkbpTE2gNByAI FiHz12fbk= X-ME-Sender: X-Sasl-enc: VKlZCACvPUMzDwZpAfKHqQunu2EcBJjc+OBQpVCR2S3r 1489521536 Subject: Re: [geda-user] [pcb-rnd] tEDAx footprint load support References: <20170314194424 DOT a2f383cf15dcf3ae8e204261 AT gmail DOT com>

To: geda-user AT delorie DOT com From: "Girvin Herr (gherrl AT fastmail DOT com) [via geda-user AT delorie DOT com]" Message-ID: <7000e948-3f4a-5676-d1ec-6017daad0cdc@fastmail.com> Date: Tue, 14 Mar 2017 12:55:09 -0700 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------BE99A12F721561BF27F83785" 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 This is a multi-part message in MIME format. --------------BE99A12F721561BF27F83785 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit On 03/14/2017 12:31 PM, Chad Parker (parker DOT charles AT gmail DOT com) [via geda-user AT delorie DOT com] wrote: > > - Holes without plating is common. > > > Common, but not essential. The same footprint could work fine with > plated holes. > > > Not always. In much of my work I'm not allowed to use pth for any kind > of mounting hole, which would include holes for screwing into things > like heat sinks and packages that might be included in a footprint. > > > --Chad +1 I was in the aerospace industry for years and I agree. Mounting holes shall not be plated. I no longer remember why. Probably due to a failure or two traced to the pth mounting holes - A reliability issue. Ignoring history and thinking outside the box is not always a good thing to do. Girvin Herr --------------BE99A12F721561BF27F83785 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

On 03/14/2017 12:31 PM, Chad Parker (parker DOT charles AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:

- Holes without plating is common.

Common, but not essential. The same footprint could work fine with plated holes.

Not always. In much of my work I'm not allowed to use pth for any kind of mounting hole, which would include holes for screwing into things like heat sinks and packages that might be included in a footprint.

--Chad

+1
I was in the aerospace industry for years and I agree. Mounting holes shall not be plated. I no longer remember why. Probably due to a failure or two traced to the pth mounting holes - A reliability issue. Ignoring history and thinking outside the box is not always a good thing to do.

Girvin Herr

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