Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-26 by Cláudio E. Elicker
... Yup. Very dangerous ;-) http://www.dhmo.org/
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Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-26 by Roland F. Harriston
Let us be realistic! Example: The volumetric area of my garage is 3600 cubic feet. If I were to do my PCB etching in this area, how much effect is the
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-26 by Russell Shaw
... Your gut contains a large amount of HCl. Beware the dangers of dihydrogen monoxide. It can be deadly;)
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-26 by Russell Shaw
... I just put a block of wood over the Ferric Chloride etching tank when i m not using it. I typically do 30+ PCBs in it and change it once a year or two. I
Re: [Homebrew_PCBs] --- In Homebrew_PCBs@yahoogroups.com, Dave
2007-11-26 by DJ Delorie
... The first time I read this, I thought he spelled Google wrong . Sigh.
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Roland F. Harriston
Dylan Smith: Well................. Out in my neck of the woods, it is quite common to see 2 or 4 gallons of Muriatic in the pool shed or in the garage of many
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dylan Smith
... In my opinion, they are all pretty nasty, and ferric chloride is the least nasty of a nasty lot... after all, hydrochloric acid is one of the harmful
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Roland F. Harriston
DJ Delorie: Seek out some stone masons or tilers in your area. Or people who clean and paint concrete, like garage floors, etc. I bet that they will turn you
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Harvey White
... If the bottle has a relatively narrow mouth, and the cap is tight, I think you re ok for most stuff. I d put it in a plastic ziplock bag (freezer type,
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Roland F. Harriston
Dave: I personally think that Ferric Chloride is one of the worst compounds to have around in a domestic environment, or in any environment that is not
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... Ok, sounds reasonable. I guess in its original sealed plastic bottle it is fairly harmless? I had mine under the kitchen sink for years. Radio Shack 16oz
Re: [Homebrew_PCBs] --- In Homebrew_PCBs@yahoogroups.com, Dave
2007-11-25 by Dave
... Dennis, Thanks for the info. I have used NaOH (sodium hydroxide) for making soap so I always added that to the water so I understand the reason. I also
--- In Homebrew_PCBs@yahoogroups.com, Dave
2007-11-25 by Dennis Waggoner
... When its mixed with 3%H2O2 it is even less concentrated. The combination of both generates less fumes. I usually etch outside and you dont even notice the
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Harvey White
... Ferric Chloride, my experience is about 3-4 feet to be safe. Harvey
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by DJ Delorie
... Unfortunately for me, it seems that up here (NH) it s seasonal. Nobody treats their pools or cleans concrete in the winter. Still looking, though.
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... Dennis, So in the unmixed form is the muriatic acid going to corrode by fumes leaking or only when mixed with the hydrogen peroxide? I have a steel
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... Serious question. How far is the minimum safe distance from metals where ferric chloride can affect them? I mean just the fumes and not a direct spill or
Re: Etching tank, build or buy?
2007-11-25 by Dennis Waggoner
... Please let me clarify the HCL and H202 HCL is standard Muriatic Acid (aprox 33%)availible at walmart $4.00/gal H202 is 3% about a dollar per quart also at
Re: [Homebrew_PCBs] Etching tank, build or buy?
2007-11-25 by Dave
... Ok, sent you the info to the madyn address. Dave
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Roland F. Harriston
Repeat.............. Don t use metals around Ferric Chloride.........period. Roland F. Harriston, P.D. ********************* I think James said to put the
Re: [Homebrew_PCBs] Etching tank, build or buy?
2007-11-25 by Harvey White
... Yeah, I d be interested in seeing that message. Depends on the email address what the problem is, though. Thanks Harvey
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... Dave :)
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... board ... Thanks for the added info. I like the part about no heat necessary. Dave
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Roland F. Harriston
Errrr............ I don t think you want to use metal around Ferric Chloride! Unless it is a high grade stainless steel. Roland F. Harriston, P.D.
Re: [Homebrew_PCBs] To tin or not to tin
2007-11-25 by Dave
... I don t know if it matters but I plan on using the Gootee method so I just ordered some tinning crystals to be safe. If I don t feel the need to use them I
Re: [Homebrew_PCBs] To tin or not to tin
2007-11-25 by Dave
Does anyone know where to get these tinning crystals in the USA? Mark Mark, I found these 2 places. The second place is slightly cheaper but they are out of
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Leon
... From: Dave To: Sent: Sunday, November 25, 2007 2:34 PM Subject: Re: [Homebrew_PCBs] most popular
Re: Etching tank, build or buy?
2007-11-25 by Dennis Waggoner
... If your using HCL and H202 Use only a plastic or rubber container. No metals! I use 1 part HCL and 3 parts H202 in cold weather and 1 part HCL and 4 parts
Re: [Homebrew_PCBs] Etching tank, build or buy?
2007-11-25 by Dave
... http://www.dragonworks.info/Electronics/making%20PC%20boards/pc_board_design.htm ... Thanks Harvey. I have the error messages etc from the bounced mail if
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Dave
... Ok, Thanks for the info. I plan on using any etchant outside for safety and also don t want to corrode my steel building :) Dave
Re: [Homebrew_PCBs] Re: Etching tank, build or buy?
2007-11-25 by Dave
... Simple is good. Is it necessary to heat all etchants or just ferric chloride? Thanks, Dave
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Roland F. Harriston
Dave: I have used both mixtures, and either one works just fine. Since I never really timed the operation with either mix, I can t say which is faster. Both
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Dave
... work. ... Thanks, Dave
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Dave
... I picked up a 2-gallon pack as thats the only way they sell it. It was just under $10. Its commonly used in pools here in the US and I also used it to
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Roland F. Harriston
I have no problem whatsoever purchasing Muriatic acid from Lowes, Home Depot, Ace Hardware, Safeway, Fry s, or any other super market. In southern Arizona (as
Re: [Homebrew_PCBs] most popular etchant?
2007-11-25 by Leon
... From: Dave To: Sent: Saturday, November 24, 2007 8:00 PM Subject: [Homebrew_PCBs] most popular
Re: To tin or not to tin
2007-11-25 by Ben
... www.mouser.com ... bought ... Another one you can try is Circuit Specialists, Inc. www.web-tronics.com Ben
Re: To tin or not to tin
2007-11-25 by Ben
... Components ... Also try Allied Electronics www.alliedelec.com or Mouser www.mouser.com they both carry some of the MG Chemical products. I don t do the
Re: To tin or not to tin
2007-11-25 by Ben
... I do not tin my boards. I use the positive method using the MG Chemcials 600 series boards. I leave the resist on, you do not have to remove to solder.
RE: [Homebrew_PCBs] To tin or not to tin
2007-11-25 by Mark Mickelsen
Does anyone know where to get these tinning crystals in the USA? Mark _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On
Re: [Homebrew_PCBs] To tin or not to tin
2007-11-25 by Dylan Smith
... Try RS catalogue number 567-812 They are a bit expensive though, but 450g should last years if you only make up a small amount of solution at a time (made
Re: [Homebrew_PCBs] Newbie question
2007-11-25 by Dylan Smith
... It s really, really easy. Just draw it (use vias for pin through hole, lines of appropriate length/width for SMD pads), select all, cut selection to
Re: [Homebrew_PCBs] To tin or not to tin
2007-11-24 by Craig vk2zcm
Hi Guys I tried your link but got No results were found for tinning crystals maybe they are knowen as some other name? ... From: Dylan Smith To:
Re: [Homebrew_PCBs] Newbie question
2007-11-24 by keith
... The latest Ubuntu works well with gEDA. It also automagiclly sets up for dual boot if WinXP is already on the box. I used Orcad SDT nearly 20 years ago and
Re: Etching tank, build or buy?
2007-11-24 by James Newton
... tank? I ... Or is ... for ... tronics.com/lowcosetsysw.html ... as I ... in ... are ... inability ... the ... It has been my experience that bubblers and
Re: [Homebrew_PCBs] Etching tank, build or buy?
2007-11-24 by Harvey White
... OK, no problem. I ll fix the link as well as look at the email... http://www.dragonworks.info/Electronics/making%20PC%20boards/pc_board_design.htm That s
Re: [Homebrew_PCBs] To tin or not to tin
2007-11-24 by Dylan Smith
... Really depends where in the world you are - I got mine from RS Components by mail order. (http://www.rswww.com)
Re: [Homebrew_PCBs] Double sided Pic Development board using PressNPeel
2007-11-24 by Dylan Smith
... I ve never used Press-n-Peel (always used inkjet photo paper for toner transfer) so I don t know how much light it lets through - but I ve found that
Re: [Homebrew_PCBs] Etching tank, build or buy?
2007-11-24 by Dave
Harvey, Eagle CAD Notes (under electronics) brings up the Making PC Boards page. I tried to email at the site but it bounced. :( Thanks, Dave
Double sided Pic Development board using PressNPeel
2007-11-24 by Dennis Waggoner
photos in http://tech.ph.groups.yahoo.com/group/Homebrew_PCBs/photos/browse/b888 My first attempt at a double sided board using smt and PLCC hardward. Using a