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Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
I didn't come across that but it sounds like a good idea, If my final attempts don't look good I'll definitely try. I originally hoped that just electroplating will be ok, if not I was considering a hot air gun and liquid flux, but an oven may be better. Thanks
For now I'm happy 'playing' with my 'Chemistry set'
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Be sure to post the finished board
It seems that strong acids and alkali metals (Li, Na, K, Mg, etc) can result in a black helicopter swarm. This is due to these being used in the "One Pot" synth, not saying any more for obvious reasons.
Also another item to watch out for is RoHS materials, ie Cd, Pb etc. Even though they are still legal for certain uses they can't be sent by UK post any more even if in a compound/ceramic.
I did have a thought about tin whiskers, apparently Bi stops them forming as well as Pb.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
3% to 5% copper is considered a reasonable mitigation of tin whiskers, possibly with some silver also.
I'm presently experimenting with silver chemistry, (and I have the silver nitrate stained fingers to prove it ;<) partly because silver is good at higher frequencies, and partly just out of curiosity. comming soon .. photochemistry and a little silver battery technology experimenting.
For plating purposes 'sterling' silver is ok but I'm using .9999 canadian maple leaf silver coin also. and I love the shine of silver.
I've got so re-interrested in chemistry that I have done no electronics (or astronomy) lately. it was my first significant hobby before electronics, but I lost interrest due to a poor organic chem. teacher at 'A' level and concentrated on my electronics hobby.
Currently in the process of making a fume hood/cupboard, primarily due to NO2 fumes !
when my son (with his camera) and I are both free at the same time I'll put up some more youtube videos.
I'm completely anti-synthetcs (for health, safety and religious beliefs), so no breaking bad here !. I'd like to re-visit pyrotechnics, but that's another black helicopter magnet.
I will abandon this thread and move to 'Projects' as I am drifting off topic and I may need multiple posts.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
I almost suggested silver at the beginning of this thread, but thought you were 'committed' to tin.
Sulaiman wrote ...
but I lost interrest due to a poor organic chem. teacher at 'A' level
My 'A' level chemistry teacher seemed to be a bit 'inorganic' as well
I was fascinated by electro-chemistry, and furtunately had an excellent physics teacher, although he did have terminal cancer at the time. I went on to set up what was basically an electro-polishing business, although I wasn't a very good businessman (wasn't really motivated by money, but it was a lot of fun)
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Tin plating copper clad pcb
