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-sha256; c=relaxed/relaxed; d=sendgrid.net;
	h=subject:references:from:mime-version:in-reply-to:to:content-type:
	content-transfer-encoding;
	s=smtpapi; bh=yYZ04V98oZZA9e2YYKjMz0j+ntcVWo/2Fsae7eawajg=;
	b=DkR3e2U9Wcd9al43gqnhYcoBat2I9dyWvGKgqczWHvFZQaG9aVViH5oDrE3IsZbDpZCx
	Cd9i8Evh1hVQELrzGSfmjCQg9l1hVQchBNVdOAyKW3z3f+EDdYWBrPVRzug/I7lNt5uP70
	zwrDZlRLwGcBNJ08xxxJt9JNOc4RjfAu0=
Subject:	Re: [geda-user] Modify SMD stencil aperture size to prevent short
	circuits?
References:	<999a6a2b-c727-4f22-3aaf-b6c20cf15807 AT linetec DOT nl>
From:	"John Griessen (john AT ecosensory DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Message-ID:	<0d60552c-2553-89eb-c850-26686508acdb@ecosensory.com>
Date:	Thu, 21 Mar 2019 20:39:19 +0000 (UTC)
User-Agent:	Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
	Thunderbird/60.6.0
MIME-Version:	1.0
In-Reply-To:	<999a6a2b-c727-4f22-3aaf-b6c20cf15807@linetec.nl>
X-SG-EID:
	=?us-ascii?Q?h+LZo4tR473eP3wdj1M8wax3s910wvFiBkApAyn=2FYucz0a4Srxu2F0iJ62nyPC?=
	=?us-ascii?Q?nxl7TDZ0rZH7J1uhY=2FaTAmJa7VHz7kyz1JWzye2?=
	=?us-ascii?Q?UXCRad+ev=2FEoRfH80YbBAa0ZfhTMDwRaQOSiA28?=
	=?us-ascii?Q?GsNWZpniaufL664CSehwzYNpXFZD7fTk=2F3R4T3a?=
	=?us-ascii?Q?5qaNZ7l31QsXk1RGAS6mkEZaZl8CSD6yrfWpVNC?=
	=?us-ascii?Q?QXNp0HIdbNyywJV2U=3D?=
To:	geda-user AT delorie DOT com
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

On 3/21/19 6:01 AM, Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com] wrote:
> After some searching, I found that decreasing the size of the openings in the stencil and thus the amount of solder paste ending 
> up on the PCB appears to be a common way to prevent shorts of this nature.
> 
> Can anyone confirm that this is indeed a good idea? It


Yes, I do that, and for QFNs hand prototyped, I get shorts and sometimes have to reflow them, mash down, wiggle
and recenter while flowing.  Less paste is needed to avoid this shorting.   I make custom paste layers associated with footprints 
with pcb-rnd.

- Raw text -