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<blockquote data-quote="Vipersan" data-source="post: 1061684" data-attributes="member: 325666"><p>Sorry I dont have a lot of free time these days ..most of my hobbies now take a back seat to taking care of my own medical issues ..and my mum ..whos dementia is getting worse week by week.</p><p>So ..in case I dont get a chance pre Xmas I want to wish all Sats members an early-ish Seasonal greets ..</p><p>Ok ..regarding soldering and SMD devices in particular ..</p><p>As has already been said ..FLUX is very important which is why I shouted it..</p><p>No clean is your freind ..or make your own by disolving Rosin in IPA.</p><p>Also get some quality gel flux ..</p><p>usueful not only as flux ..but also helps to keep smds in position whilst soldering.</p><p>Lead based solder is always king despite silly scare stories...though you can use solder paste ...which sadly doesn't keep for long.</p><p>you can extend it's shelf life by keeping it in a fridge ..but it will eventually solidify becoming useless.</p><p>IPA for pcb cleaning etc..though Meths will also be useful for general cleanups.</p><p>Temperature control is the key to all professional soldering and re-work.</p><p>So ..a good quality Iron with a good range of soldering iron tips. pointed conical ..blade/spade bits etc...</p><p>A hot air station is also very very useful both for removing and replacing smd devices ...</p><p>also useful for shrink wrapping.</p><p>Another thing I can thoroughly recommend is Chipquik ..</p><p>Expensive but this low melting point alloy will get you out of so many tricky scrapes by mixing with the existing solder making easier removal of smd devices and chips ..which when cleaned up an often be reused if proved not faulty.</p><p>Pre warming pcbs to arounf 80 to 100 deg C will make the job easier in most cases ..but rememeber to be cautious around plastics.</p><p>Also invest in a roll of Kapton tape ..this can be used to protect heat sensitive areas.</p><p>..and finally some sort of magnification both to work on pcbs and inspect for faults and defects...thesee often come with lighting to adequately illuminate the job ..but if not ...then make sure you provide good strong lighting.</p><p>I recently invested in a ADSM302 microscope which can display the output on any screen with hdmi in ...although it has a good sized integral screen ..</p><p>A good working clearance under the lens and heavy stable metal base.</p><p>It aint cheap around £175 ...but super useful and I can recommend it.</p><p>[MEDIA=youtube]hlcA9CCXdqA[/MEDIA]</p><p></p><p>bfn ...and hopefully I can pop in again soon..</p><p>rgds</p><p>Evan</p></blockquote><p></p>
[QUOTE="Vipersan, post: 1061684, member: 325666"] Sorry I dont have a lot of free time these days ..most of my hobbies now take a back seat to taking care of my own medical issues ..and my mum ..whos dementia is getting worse week by week. So ..in case I dont get a chance pre Xmas I want to wish all Sats members an early-ish Seasonal greets .. Ok ..regarding soldering and SMD devices in particular .. As has already been said ..FLUX is very important which is why I shouted it.. No clean is your freind ..or make your own by disolving Rosin in IPA. Also get some quality gel flux .. usueful not only as flux ..but also helps to keep smds in position whilst soldering. Lead based solder is always king despite silly scare stories...though you can use solder paste ...which sadly doesn't keep for long. you can extend it's shelf life by keeping it in a fridge ..but it will eventually solidify becoming useless. IPA for pcb cleaning etc..though Meths will also be useful for general cleanups. Temperature control is the key to all professional soldering and re-work. So ..a good quality Iron with a good range of soldering iron tips. pointed conical ..blade/spade bits etc... A hot air station is also very very useful both for removing and replacing smd devices ... also useful for shrink wrapping. Another thing I can thoroughly recommend is Chipquik .. Expensive but this low melting point alloy will get you out of so many tricky scrapes by mixing with the existing solder making easier removal of smd devices and chips ..which when cleaned up an often be reused if proved not faulty. Pre warming pcbs to arounf 80 to 100 deg C will make the job easier in most cases ..but rememeber to be cautious around plastics. Also invest in a roll of Kapton tape ..this can be used to protect heat sensitive areas. ..and finally some sort of magnification both to work on pcbs and inspect for faults and defects...thesee often come with lighting to adequately illuminate the job ..but if not ...then make sure you provide good strong lighting. I recently invested in a ADSM302 microscope which can display the output on any screen with hdmi in ...although it has a good sized integral screen .. A good working clearance under the lens and heavy stable metal base. It aint cheap around £175 ...but super useful and I can recommend it. [MEDIA=youtube]hlcA9CCXdqA[/MEDIA] bfn ...and hopefully I can pop in again soon.. rgds Evan [/QUOTE]
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