H2O2 storage - no sun!
2005-05-19 by Stefan Trethan
Hi, don t forget H2O2 decomposes in light. I forgot a new bottle on the table, the sun shone on it. There was so much presure it bent the bottom outwards and
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Toner Transfer
2005-05-19 by yutates
Hi, as a newbie i m trying to learn the methods you are talking about. Yeterday i tried toner transfer method in the univ s lab, by using HP 1100 LaserJet,
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-19 by Stefan Trethan
... Denny, To be honest, what i need is a guy that says i have used latex for soldermask, been there, done that, it holds up under soldering temperature. It is
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-19 by milwiron@terrorbydesign.com
... Alan, Yes, I said up front I ve never been around PC board production but I ll have to thank you anyhow for your condescending replies, I m sure it was the
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-19 by Stefan Trethan
... i see, thanks, will try it. ST
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-19 by Alan King
... PS but first, History channel Modern Marvels tonight has rubber as the subject for one of the hours, should repeat again in 3-4 hours. Anything that masks
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Alan King
Why not try a 5 second search on Google? http://www.staticspecialists.com/techspray.html Didn t mention a word about it being the film mask on a board, you ve
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by milwiron@terrorbydesign.com
Hi Alan, This is an area I don t know much about, how production boards are made. I buy em but I really don t know details of the process. From every
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Stefan Trethan
... Ok so i will have to try. I was eager to abandon the idea cause i will feel kind of foolish asking for it in the shop after i have found out by accident
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by milwiron@terrorbydesign.com
Hi Tobias, The silicone oils and polysiloxane sprays that stay liquid or greasy wouldn t work. There are spray can/aerosol silicones by Loctite in their
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Stefan Trethan
On Wed, 18 May 2005 09:11:59 -0700, Tobias Gogolin ... I think silicone spray is the silicone oil, no? If it is not and it hardens it
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Alan King
... Now don t go jumping to any crazy, non-scientific conclusions there. Most solder mask is pure liquid latex, and survives 700 degrees wave soldering, so of
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Tobias Gogolin
Excuse me, a question please: I remember having seen silicon spray might that or any other spray type surface treatment do similar tricks ? You guys are
Re: Silicone paper experiments
2005-05-18 by milwiron
... Amen, Brother Stefan. ;-) Denny
Re: Silicone paper experiments
2005-05-18 by milwiron
... try them. Hi, The silicone sheet I have was a sample I conned from one of my suppliers. It s actually not too rare, I know places like MacMaster Carr
Re: [Homebrew_PCBs] Re: Silicone paper experiments
2005-05-18 by Stefan Trethan
On Wed, 18 May 2005 11:57:20 -0000, milwiron ... Tanks, then i needn t try. ... Well, almost all is bad for living tissue. Hell,
Re: Silicone paper experiments
2005-05-18 by milwiron
... my chemicals ... Hi Stefan, Liquid latex dries/cures in to an unvulcanized rubber, the toner would bond right to it... if it was ever able to get past the
Re: [Homebrew_PCBs] Re: Inkjet printing right on a circuit board....
2005-05-18 by Thomas
getting that Black Ink Stucco d so to speak onto the OHP Film with out any misalignment is painfull sometimes, however printing it twice was probably enough
Re: Inkjet printing right on a circuit board....
2005-05-18 by Ben H. Lanmon
... obtained good results .... I put the transparencies through the printer a couple of times to get a very dark layer of Black ink and with perfect results at
Re: [Homebrew_PCBs] RE: Silicone paper experiments
2005-05-17 by Stefan Trethan
... I do not say it is wrong, never did. It is merely that my experiments have let to different findings, in most points, which is surprising, at least. This
Re: [Homebrew_PCBs] RE: Silicone paper experiments
2005-05-17 by KD5NWA
I have a GBC laminator also, it is wonderful, it s so consistent in transferring the toner, I could never get a iron to work that well. By the way, where did
RE: Silicone paper experiments
2005-05-17 by milwiron@terrorbydesign.com
... Hi Stefan, I m not sure how you can say a method is wrong if it works for me. What I posted works very well with the equipment and materials I have on
Re: [Homebrew_PCBs] acrylic, better uses for oven than cooking, bubbler (was: Silicone paper experiments
2005-05-17 by Stefan Trethan
On Tue, 17 May 2005 12:12:18 +0200, Zoran A. Scepanovic ... I do not trust that paint to protect it long-term. I simply stuck the hose to a
Re: [Homebrew_PCBs] acrylic, better uses for oven than cooking, bubbler (was: Silicone paper experiments
2005-05-17 by Zoran A. Scepanovic
Hello Stefan, Tuesday, May 17, 2005, 9:45:16 AM, you wrote: ST I got black flexible hose. It is made of foam rubber, the outside is ST smooth and has tiny
Re: [Homebrew_PCBs] Board cleaning- was Silicone paper experiments
2005-05-17 by Stefan Trethan
... There must be some piece of misinformation that gets so many people to believe acetone is carcinogenic. I suspect it is a confusion with the strong-acid
RE: [Homebrew_PCBs] Board cleaning- was Silicone paper experiments
2005-05-17 by Andrew
I stand corrected. I was sure I had read it in a MSDS at my previous employer. Perhaps there was an error in the information, as I no longer work there it is
Re: [Homebrew_PCBs] Feed Screws for a Small CNC PCB Machine?
2005-05-17 by Stefan Trethan
On Mon, 16 May 2005 19:43:49 -0400, Bill Blackburn ... I will use M8 stainless on my machine. I think the pitch is too small but it will only travel slower, i
Re: [Homebrew_PCBs] Re: Silkscreen Ink
2005-05-17 by Stefan Trethan
... I ve used it with hot air and there were no problems at all. You could also use a old pen plotter to plot the legend. I would expect there are
Re: [Homebrew_PCBs] acrylic, better uses for oven than cooking, bubbler (was: Silicone paper experiments
2005-05-17 by Stefan Trethan
... I didn t know there is super clear variety, interesting. I once tried to use it to isolate contacts of a relais (mains voltage). It shortet them right out
Re: [Homebrew_PCBs] Board cleaning- was Silicone paper experiments
2005-05-17 by Stefan Trethan
I will not go into that discussion again, we have fought that battle a long time ago and fighting over the same ground is useless. Acetone is not carcinogenic,
Re: [Homebrew_PCBs] Feed Screws for a Small CNC PCB Machine?
2005-05-17 by Alan King
... Thinking linear motion products but can t remember for sure if that s the right company name. They have 1/4 lead screw, and plastic anti-backlash nuts.
Re: [Homebrew_PCBs] Silicone paper experiments
2005-05-17 by Alan King
... Well picked it up because I can use it for its original use too, it s super clear. But nothing to flame and oven test it, so may as well. If it flames
Re: Silkscreen Ink
2005-05-17 by lanz_24
Thanks! but where can i get this ink? is it available at DIY shops? How do I ask o it when buying? I just sa Epoxy paint ? Is this the same ink that has a pot
Re: Silkscreen Ink
2005-05-17 by lanz_24
Isn t the toner affected with wave soldering? maybe reflow oven? or a simple hot air solderer? Im concerned that if i use toner it will melt..and besides black
Re: Silkscreen Ink
2005-05-17 by gregben
... silkscreen ... Epoxy. Requires mixing two parts (ink and catalyst). Heat cured. Screened through a tensioned polyester mesh. Photoemulsion is applied to
Feed Screws for a Small CNC PCB Machine?
2005-05-16 by Bill Blackburn
Hi Guys I am going to start building a small CNC milling machine (X = 7 , Y = 7 , Z = 6 ) for machining PCB s and I am wondering what I should be using for the
RE: [Homebrew_PCBs] Silicone paper experiments
2005-05-16 by Andrew
... acetone. ... the ... Acetone is listed as a carcenogenic, not sure about the thinners. Acetone Is a horrible chemical in it s own right. We have acetone at
Re: [Homebrew_PCBs] Silkscreen Ink
2005-05-16 by Earl T. Hackett, Jr.
Naz-Dar used to be a common manufacturer, but when I checked their website 6 months or so ago, they posted that they were discontinuing their PC inks when the
Re: [Homebrew_PCBs] Silicone paper - the complete guide
2005-05-16 by Stefan Trethan
On Mon, 16 May 2005 21:44:28 +0200, Stefan Trethan ... Make that: peel as soon as it leaves the fuser. ST
Re: [Homebrew_PCBs] Silicone paper - the complete guide
2005-05-16 by Stefan Trethan
well, all i know anyway. I start out with several sheets of standard 80g copier paper, and the silicone (red, high-temp). Put a sheet on a flat surface (i use
Re: [Homebrew_PCBs] Silicone paper experiments
2005-05-16 by Stefan Trethan
Nice to hear someone was done work on it too. sadly i have to disagree on almost all points. ... I agree on this one ... I disagree on this one. I use a steel
Silicone paper experiments
2005-05-16 by milwiron@terrorbydesign.com
Since Stefan first posted his idea I ve played around with this on and off... mostly off, but here s what works well for me. Your mileage may vary. 1. Use high
Re: [Homebrew_PCBs] Silicone paper experiments
2005-05-16 by Stefan Trethan
Got an hour of PCB stuff in today, maybe more later. The creases on the bottom of the page were from transport misalignent, have adjusted that and they are
Re: Inkjet printing right on a circuit board....
2005-05-16 by Ben H. Lanmon
... and ... Smallest traces that I have done is .020 , I don t normally have a need for anything smaller, but the Board Edge line that I use to cut them apart
Re: [Homebrew_PCBs] Silkscreen Ink
2005-05-16 by Stefan Trethan
... I use toner transfer to make the component legend (black). I do not like the term silkscreen very much, as component legend can be printed in many ways and
Silkscreen Ink
2005-05-16 by lanz_24
Hello! Does anyone have an idea what kind of ink is used to make silkscreen prints on PCB s and how to use them? I d appreciate your help! Thanks LANZ
Re: [Homebrew_PCBs] Re: Inkjet printing right on a circuit board....
2005-05-16 by Stefan Trethan
... what are .010? this is an international list please always use units. If i assume it is inch that would be 0.25mm, and absolutely no problem with a 600dpi
Re: [Homebrew_PCBs] Silicone paper experiments
2005-05-16 by Stefan Trethan
... I agree silicone does not melt. not even if it burns. I assume you are right, there are 2 liquids present. one beeing water or acid, the other beeing some
Re: Inkjet printing right on a circuit board....
2005-05-16 by Steve
... wrote: ... I think it was me, here, passing it on from the Screenprinters list. Someone did some thinking about the fact that Canon had to make the lighter
Re: [Homebrew_PCBs] Re: Inkjet printing right on a circuit board....
2005-05-16 by Thomas
I used my little ol Cannon BJC85 with the transparencies and obtained good results .... I put the transparencies through the printer a couple of times to get a