X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Date: Tue, 29 Nov 2011 15:44:31 +0100 From: Attila Kinali To: geda-user AT delorie DOT com Subject: Re: [geda-user] Re: I want to do BGA prototype soldering Message-Id: <20111129154431.a9c8b9dd.attila@kinali.ch> In-Reply-To: <20111129152842.877f1423.attila@kinali.ch> References: <1486241a-88b7-4c8d-8354-ded392eadf96 AT email DOT android DOT com> <4EC9CE99 DOT 5040303 AT industromatic DOT com> <4ED27309 DOT 6030100 AT ecosensory DOT com> <20111127231842 DOT 3FD9B81F6262 AT turkos DOT aspodata DOT se> <4ED30BB2 DOT 8030301 AT ecosensory DOT com> <20111128114541 DOT a9359d0d DOT attila AT kinali DOT ch> <4ED3AD70 DOT 6060009 AT ecosensory DOT com> <20111129152842 DOT 877f1423 DOT attila AT kinali DOT ch> Organization: GEHIRN X-Mailer: Sylpheed 3.1.0 (GTK+ 2.24.7; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII 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 Tue, 29 Nov 2011 15:28:42 +0100 Attila Kinali wrote: > > > Yes and no. Yes, you can do it, no you need a good fan > > > (not the usual ones you get at hardware shops) and some > > > experience how to do it. > > > > By fan, are you meaning hot air blower, or heat gun? > > Like my 1650 Watt version? > > Er.. yes.. sorry. The language barrier got me here.. > I meant something like the "HOT JET S" from Leister with a 5mm nozzle. > Ie something that has a fine airflow and temperature control and that > you can move precisely. Hint: if you want to use that to solder a BGA, use a liberal amount of highly liquid flux and pour it under the BGA (from the sides). And be carefull not to touch the board or hit the table with a foot. Otherwise you'll get bend solder balls and possible shorts. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look at the bleeding body mangled beneath the heap -- Tirin, The Dispossessed, U. Le Guin