Through Hole vs. Surface Mount
in [Design]
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From: krw on 31 Mar 2010 19:00 On Wed, 31 Mar 2010 11:33:55 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On Mon, 29 Mar 2010 08:22:07 -0700 (PDT), mpm <mpmillard(a)aol.com> wrote: > >>On Mar 29, 9:10�am, "Tim Williams" <tmoran...(a)charter.net> wrote: >>> "mpm" <mpmill...(a)aol.com> wrote in message >>> >>> news:3c2cb2d5-5c26-496d-8de8-abc5392f8269(a)z4g2000yqa.googlegroups.com... >>> >>> > One mis-step, and you've potentially ruined hours worth of work, only >>> > to start all over again. >>> > Plus, after you're purchased the bare copper boards, the checmials, >>> > the drills, and include your time -- it costs way more than the cheap >>> > PCB houses. >>> > With the latter giving you near perfect boards most of the time, on 2 >>> > or 3 day turns, for $50 or so, and some even include the >>> > silkscreening. >>> >>> The chemicals are practically free. �Muriatic acid $5 at the hardware store. >>> Acetone $5. �You could get about a hundred boards from each, the cost per >>> board doesn't even count. �You'll spend more on the transfer paper. >>> >>> As a student, I don't have $50 to spare, nor is my time worth more than $50 >>> for the same. �It makes sense to make my own boards. >>> >>> There is one more advantage you missed. �I also get them same day, a service >>> you'd be charged many times the list price from a commercial supplier. >>> >>> Tim >>> >>> -- >>> Deep Friar: a very philosophical monk. >>> Website:http://webpages.charter.net/dawill/tmoranwms >> >>That's a fair statement. Several, in fact. >>I was a student myself the last time I went the DIY route. >>Perhaps it is a rite of passage? :) >> >>Never again though. > >I think that it kind of is, it really does separate the ones >who love electronics from the "ticket to a high paying job" >types. Of course there are those in between as well. I've never made my own PCBs, at least with a wet process (our college had a lathe that turned out circuits from copper-clad). I've used a fair amount of wire-wrap, though. ...not that I do a lot of electronics for myself. I've always got enough of it at work.
From: krw on 31 Mar 2010 19:01 On Wed, 31 Mar 2010 10:51:56 +0100, "Nial Stewart" <nial*REMOVE_THIS*@nialstewartdevelopments.co.uk> wrote: >> I agree! >> I personally don't understand why ANYONE would want to make their own >> circuit boards. >> There must be some level of satisfaction in rolling your own, but not >> for me. > > >One advantage is being able to knock up a simple board to try something >_now_ (or in a couple of hours) rather than in three days, but this is >only really applicable to small hacks. > >Other than that it's not worth the hassle. For small hacks I solder wire to components on perf board.
From: Joerg on 31 Mar 2010 19:52 krw(a)att.bizzzzzzzzzzzz wrote: > On Wed, 31 Mar 2010 13:30:12 -0700, Joerg <invalid(a)invalid.invalid> wrote: > >> Robert Baer wrote: >>> Archimedes' Lever wrote: >>>> On Tue, 30 Mar 2010 09:42:05 -0700, Joerg <invalid(a)invalid.invalid> >>>> wrote: >>>> >>>>> All I can tell you is that there is no glop. I just did a few more >>>>> solder joints and held them under a magnifier -> nada, zilch, clean. >>>>> >>>>> Maybe you used the wrong temperature? My Weller is running at 640F >>>>> right now. >>>> >>>> Most 'no-clean' hand operations I ever saw left the perfectly formed >>>> solder joint encapsulated in a thin flux film. Are you sure that you are >>>> not just too old or too non-detail oriented to 'see' it, even though it >>>> is there? >>>> >>>> The flux does not evaporate, and is, by design, meant to remain, so it >>>> *has* to be there... literally. >>> Check! >>> That is the glop i was talking about. >> >> Then why doesn't anything corrode out here? Even stuff where there is >> extensive scratching by alligator clips never developed a problem. >> >> Now RoHS solder, that's a whole 'nother story. Don't get me started ... > > We use RoHS solder and a no-clean flux. Hows that grab ya'. ;-) That gives me the goose bumps ;-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: krw on 31 Mar 2010 20:35 On Wed, 31 Mar 2010 16:52:24 -0700, Joerg <invalid(a)invalid.invalid> wrote: >krw(a)att.bizzzzzzzzzzzz wrote: >> On Wed, 31 Mar 2010 13:30:12 -0700, Joerg <invalid(a)invalid.invalid> wrote: >> >>> Robert Baer wrote: >>>> Archimedes' Lever wrote: >>>>> On Tue, 30 Mar 2010 09:42:05 -0700, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> All I can tell you is that there is no glop. I just did a few more >>>>>> solder joints and held them under a magnifier -> nada, zilch, clean. >>>>>> >>>>>> Maybe you used the wrong temperature? My Weller is running at 640F >>>>>> right now. >>>>> >>>>> Most 'no-clean' hand operations I ever saw left the perfectly formed >>>>> solder joint encapsulated in a thin flux film. Are you sure that you are >>>>> not just too old or too non-detail oriented to 'see' it, even though it >>>>> is there? >>>>> >>>>> The flux does not evaporate, and is, by design, meant to remain, so it >>>>> *has* to be there... literally. >>>> Check! >>>> That is the glop i was talking about. >>> >>> Then why doesn't anything corrode out here? Even stuff where there is >>> extensive scratching by alligator clips never developed a problem. >>> >>> Now RoHS solder, that's a whole 'nother story. Don't get me started ... >> >> We use RoHS solder and a no-clean flux. Hows that grab ya'. ;-) > > >That gives me the goose bumps ;-) Europeons. What are you going to do?
From: Tim Williams on 31 Mar 2010 23:17
<krw(a)att.bizzzzzzzzzzzz> wrote in message news:n0l7r5tcr38eknf3iifg41gpb0gfq47tif(a)4ax.com... > For small hacks I solder wire to components on perf board. Now that I've got PCBs down fairly well, I'm more inclined to make a proper PCB than wire up perf board. It's hard to beat the density of perf board, though. You can pack components wherever you want, overlapping as much as you want. DRC would explode. Downside is, you have to place everything as you go, so you can end up making some really awful circuits with way too many long jumpers, and it takes forever when you've got a big circuit to wire up. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms |