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Date: Fri, 22 Mar 2019 20:49:10 +0100
From: "Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: "John Griessen (john AT ecosensory DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] Modify SMD stencil aperture size to prevent short
 circuits?
Message-ID: <20190322194910.27fq4po5ycuv4fma@lt-gp.iram.es>
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 <20190322090559 DOT op775lcm6jc5ksnd AT lt-gp DOT iram DOT es>
 <0eb23b3e-566b-b98a-b9b2-fcf58de7af2c AT ecosensory DOT com>
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On Fri, Mar 22, 2019 at 01:44:27PM +0000, John Griessen (john AT ecosensory DOT com) [via geda-user AT delorie DOT com] wrote:
> On 3/22/19 4:05 AM, Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com] wrote:
> > However, the pads were still centered, for 0402 and especially 0201,
> > I've found that slightly off-centering the paste towards the outside
> > improves the result.
> 
> Do you mean paste is in stripes that go partly outside the bounds of the pads on the 0402 and 0201?

Not exactly, the extent of the solder paste matches the pad on the
external sides, but is recessed on the internal sides. For the width I
slightly shrink it, but I suspect it was a mistake for 0201 (not done
another board with 0201 since then), but it may also depend on the
solder paste characteristics. 

> 
> Sounds good for anti-tombstone-effect...

In my case it helped, but YMMV. I've more experience with 0402 than with
0201 (only one board).

	Gabriel