Re: [Homebrew_PCBs] Re: Cleaning PCB without Acetone
2006-02-07 by Mycroft2152
Hey Stefan, The DHMO website is a little bit of chemist s MSDS humor. :) You are not the only one that got caught. There was a city council in CA that almost
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Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Stefan Trethan
... It melts down. I have seen a iron with a melted plate once. Not a good idea. All modern ones will have secondary thermal fuses too (but i m sure you d find
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Stefan Trethan
On Tue, 07 Feb 2006 22:02:56 +0100, Codesuidae ... Use a fuser assy, it s cheap, ready made, and has a heated roller that does the
Re: Inexpensive copper clad
2006-02-07 by dl5012
Hi Bob, I ve done a lot of circuits with point-to-point wiring. Since I found the TT method, I haven t done any. But I decided for some quick prototypes,
Re: [Homebrew_PCBs] Re: Cleaning PCB without Acetone
2006-02-07 by Stefan Trethan
On Tue, 07 Feb 2006 20:53:41 +0100, mycroft2152 ... I don t like that page. It is one of the less scientific ones. ST
Re: [Homebrew_PCBs] Re: Dangerous Chemicals
2006-02-07 by Adam Seychell
... I experimented with difference neutralizing chemicals for copper chloride etchants (containing 150g/L of ionized copper!!!). Safest, cheapest and easiest
Re: Toner transfer experiments
2006-02-07 by wbblair3
... Just for the heck of it, I m going to try turning the irons upside down and placing a black-anodized 80486 low-profile heat sink along with some silcon
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by newaag
Hi Bill; The key for thicker boards is to put the board into the laminator on a diagonal. I use a very thin paper wrapper (8.5x11 folded in half) around the
Re: [Homebrew_PCBs] How are people removing flux?
2006-02-07 by Alan King
If someone s just absolutely needing a nearly perfectly clean board, there is another way. Get some fluxless solder and a good water soluable flux as used for
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... A post elsewhere in this forum clearly pointed out to me that my iron measurements were grossly inaccurate. As someone else here stated earlier, with an
Re: Toner transfer experiments
2006-02-07 by wbblair3
... I had considered the boiling point issue since I know both irons do produce steam. However, I had assumed (dangerously) that this was due to higher temps
Re: Inexpensive copper clad
2006-02-07 by newaag
Dennis Wow ! thanks for that tip. I see he has 1/8 thick unclad too, perfect for some other projects (ever build tube amps with point to point wiring?) I ll
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... That is _REALLY_ cool! Bill
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... laminator? ... laminator up ... I really have no hard figures for that although I d suspect that the laminator applies a considerable amount of pressure
Re: Re: Toner transfer experiments
2006-02-07 by Richard
Steve: Nevermind... I misremembered what I read, ...or it could be that he misunderestimated the temp... R. -- ============================ Please
Re: Re: Toner transfer experiments
2006-02-07 by Richard
Steve said: I thought he said 200C, 392F. He said that s where the toner is rated to melt. He said that the iron he measured was 205F in one spot, 175F
Re: [Homebrew_PCBs] Inexpensive copper clad
2006-02-07 by Evan Dudzik
I second that, I ve bought copper clad from him a few times and it s an incredible deal. all the boards I received were in great condition too, nothing all
Re: Dangerous Chemicals
2006-02-07 by John Popelish
... (snip) ... (snip) Go to the grocery store and but a box of washing soda (sodium carbonate) for a dollar or two. When you have exausted the ferric
Re: [Homebrew_PCBs] How are people removing flux?
2006-02-07 by tony tecson
hi, i use denatured alcohol, sometimes lacquer thinners too. dl5012 wrote: Hi, How are people removing flux? I m using 98+% IPA and still
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Leon Heller
... From: David Frascone To: Sent: Tuesday, February 07, 2006 8:18 PM Subject: Re: [Homebrew_PCBs] Re:
Re: Dangerous Chemicals
2006-02-07 by dl5012
Hi, I m on a septic and well system and I can tell you, no significant amounts of spent ferric chloride will be going down my drains. Kill the beneficial
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Leon Heller
... From: brewski922 To: Sent: Tuesday, February 07, 2006 7:07 PM Subject: [Homebrew_PCBs] Re: Toner
Re: Toner transfer experiments
2006-02-07 by Richard
Dennis, you were likely using Kodak KPR resist in college. It s an excellent resist; capable of very fine lines. In fact, it was used for IC processing in the
Re: Toner transfer experiments
2006-02-07 by Steve
Doh! Nevermind... I misremembered what I read, he said it only got to 205F max, and that his irons would not get to the 200C (392F) he wished them to. Steve
Re: [Homebrew_PCBs] Re: Toner transfer experiments
2006-02-07 by David Frascone
I think he was talking about 200 degrees C, or 392 degrees Farenheit. -Dave ... -- David Frascone Energize! said Picard and the pink bunny appeared...
Re: Toner transfer experiments
2006-02-07 by Steve
... Yes, if a pyrometer is used, then it is almost certainly calibrated for an 80% black surface. Shiny metal or white will show a false low temp. ... I
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by microsoftwarecontrol
I am using my PID+TC T controller, to a laminator. result is perfect to me. And as my experience, without raising T of original laminator, you can do proper
Re: Dangerous Chemicals
2006-02-07 by derekhawkins
... Some hazmat agencies here in the US seem to recommend diluting small quantities (gallon or less) of spent Ferric Chloride with water and pouring it down
Re: Cleaning PCB without Acetone
2006-02-07 by Richard
What!?! They sell H2O at your place? Are they crazy? Didn t you know how dangerous that is? You can die from inhaling it! Lotsa people died that way
Re: [Homebrew_PCBs] Re: Dangerous Chemicals
2006-02-07 by Leon Heller
... From: Dave To: Sent: Tuesday, February 07, 2006 8:46 PM Subject: [Homebrew_PCBs] Re: Dangerous
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Codesuidae
... Fair enough. Any idea how much pressure is required to get the toner to transfer? Would it be reasonable to dispense with the laminator entirely and use
Re: Dangerous Chemicals
2006-02-07 by Dave
... No, not Sulfuric Acid; use Hydrochloric Acid instead. As for how much, the appropriate amount is some. ... When it starts taking too long to etch, there s
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... Darn, I wish you d posted this a few weeks ago. I d love to be able to work with thicker boards. I have a lot of surplus double-sided boards of various
Re: Dangerous Chemicals
2006-02-07 by Dave
... tried it ... Me, too. You can find HCl, as Muratic Acid, in most hardware stores. ... The Ferric Chloride isn t that bad of a problem. The problem is
Re: Toner transfer experiments
2006-02-07 by Richard
Excellent post Bill....good detailed report. I ll note only one thing: you re either not accounting for emissivity in your optical temp-measurements; or you
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... Frankly, as an afterthought, I didn t want to in any way endorse modifications which might cause problems, so I didn t use the switch nor do I plan to.
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Leon Heller
... From: wbblair3 To: Sent: Tuesday, February 07, 2006 8:33 PM Subject: [Homebrew_PCBs] Re: Toner
Inexpensive copper clad
2006-02-07 by dl5012
Hi Bob, That works out to almost 10 cents per sq. inch. Try abcfab on eBay. You can get single sided single sided 1 oz. 0.062 thick CEM- 1 for about 2 cents
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by wbblair3
... I found a UK web page here: http://tinyurl.com/8cwf4 that lists your 1.50 GBP (2.62 USD) FPC-16 economy board and others including the 1.95 GBP (3.35 USD),
Re: Cleaning PCB without Acetone
2006-02-07 by Dave
... Or worse! Some of the denaturing ingredients may be methanol, which can cause blindness. There are also some other pretty awful denaturing agents that I
Re: [Homebrew_PCBs] Re: Dangerous Chemicals
2006-02-07 by Leon Heller
... From: dl5012 To: Sent: Tuesday, February 07, 2006 8:17 PM Subject: [Homebrew_PCBs] Re: Dangerous
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by David Frascone
How much does a small UV setup cost? For say, 6 PCB s (max)? -Dave ... -- David Frascone Catholic (n.) A cat with a drinking problem.
Re: Dangerous Chemicals
2006-02-07 by dl5012
Hi, Glad you rang in on this topic... What is the proper way to dispose of used ferric chloride? Is there a way to rejuvinate it? Someone mentioned adding
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by newaag
I have also recently been playing with this technique. I can report great results with 3 papers - Pulsar TTS paper Staples Picture Paper Label backing paper I
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Leon Heller
... From: dl5012 To: Sent: Tuesday, February 07, 2006 7:41 PM Subject: [Homebrew_PCBs] Re: Toner transfer
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Codesuidae
... Did you try your switch to increase the temperature of the laminator? Any thoughts on how practical it is to get the temp on the laminator up to where the
Re: [Homebrew_PCBs] How are people removing flux?
2006-02-07 by Leon Heller
... From: dl5012 To: Sent: Tuesday, February 07, 2006 7:32 PM Subject: [Homebrew_PCBs] How are people
Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by brewski922
... quicker ... Leon I made several UV PCBs back in the 70s. Gosh has it been that long ago! As I recall it took 1) Develop the artwork 2) Print out the
Re: [Homebrew_PCBs] Re: Toner transfer experiments and a fix for cheap, low-temp laminators
2006-02-07 by Leon Heller
... From: wbblair3 To: Sent: Tuesday, February 07, 2006 7:26 PM Subject: [Homebrew_PCBs] Re: Toner
Re: Cleaning PCB without Acetone
2006-02-07 by mycroft2152
There is another solvent that should be considered for cleaning pcb s, DHMO. I ve used it successfully for many years. For further info: