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2013-07-30 by crazy_geekchick
The replacement of the lens with the punch is a good idea. I was worried about precision between the hole and the registration pin. Do you have any idea where
2013-07-30 by <n0tt1@...>
Can you splain the green foil thing to seal the top of the toner? Charlie On Tue, 30 Jul 2013 13:15:38 -0400 Harvey White writes:
2013-07-30 by Rick Sparber
Harvey, You make a lot of sense. The etchant will become used up sooner but should do the job. I m playing with etching text into copper. Having a bunch of
2013-07-30 by Rick Sparber
I m not sure people on this BBS have seen this old article: http://rick.sparber.org/ttm.pdf Rick ... From: Homebrew_PCBs@yahoogroups.com
2013-07-30 by Rick Sparber
John, I believe I have adjusted the printer for the darkest print but can t be sure. This HP laser printer has very few options. I selected the highest
2013-07-30 by Rick Sparber
As a side test, I took one of my coupons and stuck it on an old credit card. Then I ran it through the laminator 10 times and in the freezer for 30 minutes.
2013-07-30 by Harvey White
... I think that the more copper argument has little effect on the total etching time. If you have enough etchant flow, I d simply expect the same density
2013-07-30 by Pict
Did you adjust the printer for the darkest print possible? There s usually a setting from the printer control panel or possibly via the driver. Regards, John
2013-07-30 by Rick Sparber
I m not there yet but am getting close. The silicone based parchment paper does give up most but not all of its toner after 10 cycles through the laminator
2013-07-30 by Rick Sparber
The test has begun. I printed out some artwork using Microsoft Word and my HP laser printer. I m using silicone based parchment paper. The artwork is mostly
2013-07-30 by Rick Sparber
Dave, I found this on eBay:
2013-07-30 by Rick Sparber
Robin, Over time, I found that convection current etching didn t work so well for me. However, placing a translucent tub with 1/2 of etchant in it over a 200W
2013-07-30 by Rick Sparber
Robin, I just added a reference to the group but will collect more input before publishing the next version of the article. Rick ... From:
2013-07-30 by Rick Sparber
David, I would never try to print directly to metal. I would be afraid that it would scratch the transfer roller. Once I tried to print to some plastic that I
2013-07-30 by kabowers@...
... Around 1969 Bell Labs, and maybe Xerox, was experimenting with using a process camera with the photographic plate replaced with a photoreceptor plate to
2013-07-30 by Leon Heller
... When I worked for Rank-Xerox in the 1960s, Xerox had a technique using their original 1385 flat-plate system for direct printing onto copper. They had some
2013-07-30 by David Pickering
That,s the one Robin As I said it does come in rolls and its quite thin so you will need to flatten it out, if in no rush just put it between some books for a
2013-07-30 by David Pickering
Hi Robin The hammers just dropped on the nail for me when you mention gum paper. The gum paper your probably talking about was and still is far as I know sold
2013-07-30 by Robin Whittle
Hi Dave, Thanks - I ordered this material: http://www.ebay.com/itm/170900415631 A4 10Pcs Sheets Heat Toner Transfer Paper For DIY PCB Electronic Prototype
2013-07-30 by David Pickering
Hi The paper and supplier that I have been using is on the page you sent marked dib-bid and the suppliers name is shcfstore. If you notice there is allot of
2013-07-30 by Robin Whittle
There s a PDF which I found interesting and don t recall being mentioned on the list: http://rick.sparber.org/electronics/el.htm Convection Etching of a
2013-07-30 by Robin Whittle
Hi Dave, Thanks for this information. I think your attempt to laser print onto copper is doomed to failure. As far as I know there is no way of transferring
2013-07-30 by James
... [Insert obligatory not sure if serious image here.] David said, as one would expect, that he used copiers back in the old days (to image hand-layed/drawn
2013-07-30 by cunningfellow
... One I have seen actually had a loupe/lens with a sight on it that looked down the bore. When you lined it up, you pulled out the lens and replaced it with
2013-07-30 by cunningfellow
... Bob, You should go in and update the wikipedia page which shows Xerox as the inventors of the laser printer. http://en.wikipedia.org/wiki/Laser_printing
2013-07-30 by David
... lol We were doing it with laser copiers long before xerox came out with there clame to fame, mind you in those days all are lay files were hand done,
2013-07-30 by David
Hi Robin The printer I am using at the moment is the Samsung ML1860 The fax paper I was using is like the old stuff bit wider than A4 so need to trim it down.
2013-07-29 by David
Hi Rick I did try very recently to print directly onto copper sticky back as used for Faraday shielding of coils etc. What I did was applied the copper surface
2013-07-29 by cunningfellow
... Thats nothing. I have been doing it that way since 1736. Although it wasn t until laser printers where either first made in the mid 70s or possibly when
2013-07-29 by crazy_geekchick
I was wanting to make sure that everything lined up on both sides of a board -- easily. I thought a solution would be to make a registration hole punch. I know
2013-07-29 by Rick Sparber
Like so many of you, I was fascinated with David s work on using a laser printer and laminator to fuse toner onto copper. It was all there in his email,
2013-07-29 by wcasse
i agree with those who have suggested laser printer label backing (the sheet left after peeling off all the labels). i work on some big pieces (12 x 5 and
2013-07-29 by jmelson2
... I ve been using .003 brass shim stock for several years to make paste stencils. I already had a laser photoplotter I built for making master artwork for
2013-07-29 by kabowers@...
... This is often considered the best writeup on the subject. He mentions starting with HCl, Cu, and H2O2, but I ve never found a copy where he completed that
2013-07-28 by Philip Pemberton
Here s a slightly odd question... well, it is Sunday night :) I was thinking about mixing up a cupric chloride etch bath. Thing is, while I have a ton of
2013-07-28 by Robin Whittle
Hi Dave, I added some distinctive text to this subject line so your message would be easier to find in the archives. Can you tell us what type of laser printer
2013-07-28 by AlienRelics
I suspect he really means the backing from label paper. It has been nearly impossible to find actual waxed paper for quite a long time. There is also silicone
2013-07-27 by Roger Blair
David, Perhaps I m having a senior moment here, but I don t understand your quoted text below... What is the purpose of laser printing to paper, if you then
2013-07-27 by Rick Sparber
David, I have dabbled in this area for a few months but did not achieve your level of success. I plan to give your procedure a try. You talk about printing to
2013-07-27 by David
Hi Thought I would share my way of making cheap DIY PCBs to you folk, been doing it this way since the early 70s after endless experiments. 1ST Design your
2013-07-26 by James
Just thought I d give a quick (well, started out as quick) update on my further experimenting with simple no-laminator application of dry film using a
2013-07-25 by Keld Sørensen
Look on Youtube - there is lots of videos showing how ! EV-Blog has some too. Best regards KSor, Denmark _____ Fra: Homebrew_PCBs@yahoogroups.com
2013-07-25 by kbyrne10
Where and how can I get info on solder paste, and how to accomplish at home. I have been following this site for a while now but need a little assistance in
2013-07-25 by Tim Gibbs
HI, Fluorescent tubes can be used safely in the dark room. These are special types which are designed not to have any UV radiation. There are different types
2013-07-24 by brane2
Wouldn t know about globally renowned manufacturer, but our local - Slovenian manufacturer is here:
2013-07-24 by ohmware
This sounds promising, thanks!
2013-07-24 by ohmware
Where does one source these, exactly? My quick Google on the topic turned up a lot of interesting links about printing ON aluminum plates, and a pretty
2013-07-24 by ohmware
I ve posted some pictures of the results I got with this experiment in the Photos section of the group. The finished DC/DC converter is holding up fine so far,
2013-07-23 by Ray
Thanks for the comments. I decided to go ahead and run a test. The worst that could happen is I would have to strip the board and re-apply the dry film. I went
2013-07-23 by Volkan Sahin
As Steve stated, we need to move this topic to Inkjet_PCB_Construction group. I need a few days to refresh my memory. Thanks, Volkan