Re: [Homebrew_PCBs] Selecting Method For Prototype Boards
2014-07-21 by Brad Thompson
On 7/20/2014 10:36 PM, Harvey White madyn@dragonworks.info ... Hello-- I ll add a couple of additional points: --If you create a design for fabrication by a
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Re: [Homebrew_PCBs] Selecting Method For Prototype Boards
2014-07-21 by Harvey White
... Let me amplify this a little for those who have not considered the problem. 1) hand soldered boards with through holes generally want bigger pads 2)
Re: [Homebrew_PCBs] Selecting Method For Prototype Boards
2014-07-21 by Peter Johansson
If you are only looking to develop one design, your design skills are solid, and your time is precious, you are *much* better off just paying the extra $$ to
Re: [Homebrew_PCBs] Selecting Method For Prototype Boards
2014-07-20 by David Lyon
The commercial pcb services are really good at the moment. Spend more time proof checking your pcb image. Last time I received a diptrace file from a client it
Re: [Homebrew_PCBs] Selecting Method For Prototype Boards
2014-07-20 by James
For the design software, I d recommend DipTrace (be sure to use the latest beta version) over DesignSpark. Board houses use Gerber files exported from your
Selecting Method For Prototype Boards
2014-07-20 by palciatore@...
I have lurked here for a while and perhaps made one or two posts. But now is the time for action. I go back a way and have made PC boards at home before, using
Re: [Homebrew_PCBs] Miss that solder smell ;-)
2014-07-20 by Stefan Trethan
If your chain smoking friend still lives, does that mean smoking is healthy? Perhaps if you hadn t eaten so much lead and mercury you might understand that
RE: [Homebrew_PCBs] Lead
2014-07-20 by Geoff Wood
And heaven only knows what is in there. Do use proper ventilation, but primarily for the flux, not for the lead. Well no. Pretty straight-forward to find out
RE: [Homebrew_PCBs] Lead
2014-07-20 by Tony Smith
... I do believe your cunning plans require a little more thought, sparky. Tony
Re: [Homebrew_PCBs] Lead
2014-07-20 by palciatore@...
I would worry a LOT more about the ingredients in the flux than about the lead. That smoke you see while you are soldering and that homes in on your nose and
RE: [Homebrew_PCBs] Lead
2014-07-19 by Tony Smith
Nah, all young-ish guys (30-40’s). Correlation may not equal causation, but it does suggest strongly “look over there…”. And on smoking, King James I
Re: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-19 by Mark Lerman
There s also a Local Printer Setting Utility program available (free) that lets you set all parameters, even things like toner density, contrast, fine line
Re: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-19 by wb8nbs@...
Trying to get the local Makerspace interested in the project. Lexmark printers can really lay down heavy ink. I ve had good luck doing iron on toner transfer
Re: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-19 by Mark Lerman
Right now I am using a Lexmark E260. Some others might work, but the HP printers I have tried do not. It is not only a paper path problem, the transfer voltage
Re: RoHS-- threat or menace?
2014-07-19 by Dylan Smith
On 19/07/2014 02:25, Brad Thompson brad.thompson@valley.net ... Several gaylords? Sounds like a different way to do it :-) I ve been using unleaded solder for
RE: [Homebrew_PCBs] Lead
2014-07-19 by Dave G4UGM
... As you are 70 I suspect you are a victim of your time. So secondary cigarette smoke inhaled when it was acceptable to smoke in the restaurant or bar or
Re: [Homebrew_PCBs] Lead
2014-07-19 by Stefan Trethan
Lead doesn t vaporize at soldering temperatures, you d need 1700°C for that, so it s unlikely. Also, most inhaled lead (mainly from lead dust) is absorbed
Re: [Homebrew_PCBs] Lead
2014-07-19 by Cristian
I m a 70 years old electronics engineer. I m not a smoker, but my pulmonary X-ray image suggests to my doctor that I m a smoker (darker image). Is that the
Re: [Homebrew_PCBs] Lead
2014-07-19 by Stefan Trethan
So the one shop was full of old bald guys who had lived much longer due to the health benefits of the fumes? ;-) Seriously, while we may not always understand
Re: RoHS-- threat or menace? (was: Re: [Homebrew_PCBs] Lead)
2014-07-19 by Stefan Trethan
1/8 are always more difficult to work with. Regardless of solder, there are vast differences in through-hole plating adhesion between different board
Re: [SPAM]RE: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-19 by Peter Johansson
On Fri, Jul 18, 2014 at 10:42 PM, wb8nbs@prodigy.net [Homebrew_PCBs]
direct laser toner print to pcb
2014-07-19 by Jim Williams
This youtube clip https://www.youtube.com/watch?v=VY-7hQ6ocx8 from Mark Lerman shows direct printing of toner resist to a board using a Lexmark E260. Anybody
Re: [SPAM]RE: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-19 by wb8nbs@...
Is this modification limited to a specific model of Lexmark printer?
RE: RoHS-- threat or menace? (was: Re: [Homebrew_PCBs] Lead)
2014-07-19 by Tony Smith
... Just used leaded solder to repair them, it works. You ll need to use a higher temperature due to the lead-free needing it. Technically not ROHS
RoHS-- threat or menace? (was: Re: [Homebrew_PCBs] Lead)
2014-07-19 by Brad Thompson
Hello-- At a recycling center where I volunteered, a manufacturer dropped off several gaylords full of electronic scrap, including a batch of thick (1/8 )
RE: [Homebrew_PCBs] Lead
2014-07-19 by Tony Smith
... I hope you are aware that the *real* danger of soldering comes from the flux fumes and lead-free solder generates much more toxic fumes than leaded solder.
Re: [Homebrew_PCBs] Lead
2014-07-19 by Russell Shaw
... It is said that romans used to chew on elemental lead for the sweet taste, which also caused poisoning after a long time.
Re: [Homebrew_PCBs] Lead
2014-07-19 by Peter Johansson
On Fri, Jul 18, 2014 at 7:46 PM, David Lyon david.lyon.preisshare@gmail.com ... I hope you are aware that the *real* danger of soldering comes from the flux
Re: [Homebrew_PCBs] Squink - The conductive ink printer
2014-07-19 by Jean-Paul Louis
Dan, At $3500 a piece, not many chances for DIY. But the industry would not even look at it. If timing is an issue, Industry will pay expediting fees to get
Re: [Homebrew_PCBs] Lead
2014-07-18 by David Lyon
On Sat, Jul 19, 2014 at 9:35 AM, Peter Johansson rockets4kids@gmail.com ... If I have some spare time, then yes. I m pretty busy doing pcb designs at the
Re: [SPAM]RE: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-18 by Mark Lerman
I m going to post an Instructible soon. There are two versions of the hack. The simplest just requires removal of the fuser, adding a set of input rollers, and
Re: [Homebrew_PCBs] Lead
2014-07-18 by Peter Johansson
On Fri, Jul 18, 2014 at 6:21 PM, David Lyon david.lyon.preisshare@gmail.com ... years ago. The Romans poisoned themselves with the lead salts they added to
Re: [Homebrew_PCBs] Lead
2014-07-18 by Peter Johansson
On Fri, Jul 18, 2014 at 4:58 PM, Daniel Donnelly KC7VDA@Gmail.com ... caused mental retardation in some poor children.. The lead in lead paint is a lead salt.
RE: [Homebrew_PCBs] Lead
2014-07-18 by Tony Smith
Hindsight has an arrogance that’s rather fascinating… Phasing out lead in paint & fuel was probably one of the best moves ever. Lead ingestion makes you
Re: [Homebrew_PCBs] Lead
2014-07-18 by David Lyon
No, our Government only now discovered what the Romans figured out 1800 years ago. Give them time to come up to speed with technology, please. On Sat, Jul 19,
RE: [Homebrew_PCBs] Direct Laser Printing Video
2014-07-18 by Rick Sparber
Mark, Can you say more about how you modified the laser printer? Thanks, Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Re: [Homebrew_PCBs] Lead
2014-07-18 by Daniel Donnelly
I Agree, all the screaming about the dangers of lead based solder is just a tempest in a tea pot, The uproar started with the suspicion that lead based
[Homebrew_PCBs] Direct Laser Printing Video
2014-07-18 by Mark Lerman
Hello all, Here is a video I just posted of my process that uses a modified laser printer to print toner directly on copperclad:
How to Repair Copper Trace on PCB
2014-07-18 by Brian Symons
As others have mentioned, you can just use some wire to bridge the gap. You can also use soder wick desoldering wick if it needs higher capacity. There are
RE: [Homebrew_PCBs] Squink - The conductive ink printer
2014-07-18 by Tony Smith
... Well yeah, but THAT meter isn t what you d use for the job. Apparently it s a little more complicated than that -
RE: [Homebrew_PCBs] Lead
2014-07-18 by Tony Smith
... US ... been ... soluble ... And tells you to wash your hands afterwards. It s not saying anything new, we all know chewing on the solder is a bad idea.
Re: 3D-printed plastic resist
2014-07-18 by Brad Thompson
Hello, Jan-- Thank you for your thoughtful comments-- I have added a few responses, not as criticism but as further attempts to apply bounds to the problem
Lead
2014-07-18 by Russell Shaw
Read-all-about-it;) Just hit my inbox.
Re: [Homebrew_PCBs] Squink - The conductive ink printer
2014-07-18 by Dave Daniel
And, of course, the actual impedance will be frequency dependent. On 7/17/2014 7:04 PM, Peter Johansson rockets4kids@gmail.com
Re: [Homebrew_PCBs] Squink - The conductive ink printer
2014-07-18 by Peter Johansson
On Thu, Jul 17, 2014 at 11:20 AM, Tony Smith ajsmith1968@gmail.com ... I m giving them credit for knowing how to use a multimeter properly, and assuming they
Re: [Homebrew_PCBs] How to Repair Copper Trace on PCB
2014-07-17 by Stefan Trethan
This is also a good rework guide I found while looking for the ESA paper: Keywords: Intertronics PCB circuit board
Re: [Homebrew_PCBs] How to Repair Copper Trace on PCB
2014-07-17 by Stefan Trethan
That s the gist of it, page 23. ST On Thu, Jul 17, 2014 at 8:27 PM, Brad Thompson
Re: [Homebrew_PCBs] How to Repair Copper Trace on PCB
2014-07-17 by Brad Thompson
... Hello, Frank and the group-- The easiest and least expensive method is to use either a strand of enameled magnet wire or AWG #30 wirewrap wire to bridge
How to Repair Copper Trace on PCB
2014-07-17 by qz9090@...
I have a PCB that has a broken copper trace on it. What are some methods of repairing the trace that I could try that would be easy to perform and not break
Re: [Homebrew_PCBs] Squink - The conductive ink printer
2014-07-17 by Daniel Donnelly
What a marvelous machine! this is not just a device that prints the traces, it also deposits the conductive glue and picks and places the components! If you