Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-10 by a8050266
@kabowers... My prints and boards beg to differ. sorry you do not agree. @ everyone else... I stand by my post. print a 5x5 square adjust your printer to the
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Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-10 by Rick Watson
I m printing the same board image, originally from Eagle, now a PDF. I was trying scaling with the print dialog to get the dimensions right, when I discovered
Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-10 by Harvey White
... You can get closer registration (perhaps not exact) by matching up the distortions. For the top, use mirror and rotate, for the bottom, use neither of
Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-10 by Terry
And yet another problem is that the pulsar type toner transfer paper stretches with heat and moisture. I found that no matter what printer I used I could
Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-10 by kabowers@...
... If it s an older printer the rubber rollers may have dried out or developed a glaze. A good place to start might be the paper pickup mechanism. Keith
Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-09 by cunningfellow
... Unfortunately not true. Laser printers will get the X axis spot on and repeatable every time. They often have slip on the paper as it is fed through and
Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-09 by Harvey White
... Mine probably doesn t (HP2100 series), if you ultimately want to keep doing this, then consider a video camera and software to accurately locate the holes
Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-09 by <n0tt1@...>
Rick, When you say that the output isn t consistent from page to page, are you talking about the same layout, perhaps the same print file? or...? I use a HP
Re: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards - Dave's toner-transfer freezing technique
2013-08-09 by Rick Sparber
I m away from home right now but if you look back through this thread, you will find the details. Rick
Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-09 by a8050266
Rick, I have used the same pulsar methods and have gotten reasonable results from them. Though I do not have dozen upon dozen under my belt I have done my
Re: Easy Fast Laser Print DIY Circuit Boards - Dave's toner-transfer freezing technique
2013-08-09 by Terry
Look back through previous posts to this same topic for a post by Robin Whittle. He gives a link to ebay for the stuff. Very cheap, very long lead time...2-3
Re: Easy Fast Laser Print DIY Circuit Boards - Dave's toner-transfer freezing technique
2013-08-09 by James Newton
Rick, can you share the source, part number and mfgr, or any other details about the special waxed paper ?
Re: [Homebrew_PCBs] Re: U.S. source for this heat-transfer solder resist film?
2013-08-09 by Russell Shaw
... I wouldn t take recommended shelf life as gospel; i m still using a roll of stuff that s way over 5 years old. Precoated board i had with photoresist
Re: U.S. source for this heat-transfer solder resist film?
2013-08-09 by Mario Mikulandra
My intent wasn t to discourage you. All photosensitive dry films have a shelf life approx. 6 months at the room temperature. The best thing to do is complete
Re: [Homebrew_PCBs] Re: U.S. source for this heat-transfer solder resist film?
2013-08-09 by <n0tt1@...>
D Oh!!! If I d known that I m pretty sure I wouldn t have ordered the stuff!! Charlie On Thu, 08 Aug 2013 18:19:04 -0000 Mario Mikulandra
RE: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards - Dave's toner-transfer freezing technique
2013-08-09 by Rick Sparber
The special waxed paper came in WAY ahead of the promise date - got it today. Wonderful material! I drafted a 1 long scale with 10 major and 30 minor
Re: U.S. source for this heat-transfer solder resist film?
2013-08-08 by Mario Mikulandra
Just a tip. The dry-film soldermask shelf life is relative short, 6 months. If kept in a fridge, you might extend it for a year. Also, the supplier must have a
Re: Easy Fast Laser Print DIY Circuit Boards
2013-08-08 by Rick Watson
I ve etched a couple of great boards using the Pulsar toner transfer paper and green foil. The problem I ve had is my laser printer doesn t produce accurate
Re: [Homebrew_PCBs] Re: U.S. source for this heat-transfer solder resist film?
2013-08-08 by Misc Clark
Please let us know the results you obtain with this material...thanks, Clark Cone ... [Non-text portions of this message have been removed]
Re: U.S. source for this heat-transfer solder resist film?
2013-08-08 by ohmware
Thanks, I have an order in now too! I m looking forward to trying this stuff out.
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-08 by Jim
I wonder how MPAA or RIAA would react to that statement. 73 Jim N6OTQ ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: U.S. source for this heat-transfer solder resist film?
2013-08-08 by Mitch Davis
... Shorter: http://www.ebay.com/itm/151030774266 M.
Re: U.S. source for this heat-transfer solder resist film?
2013-08-08 by ve7su
Here is a source on ebay from San Diego. I have ordered and received this item. Works as advertised...
RE: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-08 by Jeff Heiss
I guessed IBM. What company? Jeff _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Jim Sent: Wednesday, August
Re: [Homebrew_PCBs] Printing of PCB pattern on paper
2013-08-08 by Sudipta Ghose
Hi N6OTQ, A lively discussion is going on another post of mine. Kind regards, 73 Sudipta VU3TKG ... -- One of those ... ... [Non-text portions of this message
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-08 by Sudipta Ghose
Hi Guys! Many thanks for the exciting discussion on IPR points. I have just come across a website of one US entity which says the following about copying a
Re: [Homebrew_PCBs] U.S. source for this heat-transfer solder resist film?
2013-08-08 by James
He is using Dynamask [Quote from the page you link] * Lamination of solder stop Dynamask
Re: [Homebrew_PCBs] U.S. source for this heat-transfer solder resist film?
2013-08-08 by Mitch Davis
... This German guy makes the most beautiful PCBs, with soldermask. It s in English, but I m also not sure what soldermask he s using:
Re: [Homebrew_PCBs] U.S. source for this heat-transfer solder resist film?
2013-08-08 by James
Solder mask type of dry film as opposed to etch resist dry film (which is thinner and not really suitable for solder mask) is generally called Dynamask, it s
U.S. source for this heat-transfer solder resist film?
2013-08-08 by ohmware
I recently came across this YouTube video: How to equip home made PCBs with a professional looking stopping agent (solder resist layer)
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-08 by Jim
Patents are stupid and far too expensive for people like us. You need to sell millions of units to justify the cost of a patent. Not that there s anything
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Jim
Mitch, Anything and everything developed in the US or for a US company is subject to and potentially covered by US copyright. If you have any doubts, please
RE: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Rick Sparber
Interesting discussion on cnczone.com. However, I would expect that if a given layout was essential to the operation of a circuit, then it would be included in
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Mitch Davis
... In the USA, PCB layouts are not covered by copyright. See response 6:
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Jim
All, When a magazine provides a PCB design and builder instructions, the assumption under fair use is that one reader can make one copy of the project for
RE: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Rick Sparber
SG, If a hobby magazine provides a PCB layout, then it should be fine to make a single board for home use. It would not be fair to copy the magazine and give
Re: [Homebrew_PCBs] Printing of PCB pattern on paper
2013-08-07 by Jim
Buy a finished PCB from the developer, and photocopy it. Or scan it and save to Postscript, and do the necessary clean-up. Or convert the scan to Gerber, and
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Sudipta Ghose
Rick, Thanks for the very thought provoking mail. Now, visualise this. I buy one hobby magazine. They provide a PCB design with the mag which I want to get
RE: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Rick Sparber
Sudipta, Let me suggest a simple way to think about this. Say you developed a PCB layout at great expense and effort. I paid for a copy and you sent it to me.
Re: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Sudipta Ghose
Hi Rick! Thanks for the link. However, the design was paid for by me and it was emailed to me. The size went haywire on printing after downloading. 73 SG ...
RE: [Homebrew_PCBs] Printing of replica of PCB on paper
2013-08-07 by Rick Sparber
By such printing of exact replica of PCB nobody s intellectual property will be violated! You may want to read this:
Printing of replica of PCB on paper
2013-08-07 by Sudipta, VU3TKG
Hi All! I would like to know as to how can I print exact replica of PCB on paper? Do I need any specific application/programme. Ideas will be greatly
RE: [Homebrew_PCBs] Glossy coating removal
2013-08-05 by Mark Harrison
Try adding a .au at the end of the URL. They don t say much about their products, other than they source from multiple manufacturers. I wonder if the paper
Re: [Homebrew_PCBs] Glossy coating removal
2013-08-04 by Donald H Locker
Kaolin sounds likely. Toothbrush to get the fine stuff out and if caustic soda helps, use it. Donald. -- *Plain Text* email -- it s an accessibility issue ()
Re: Starting a CuCl etchant bath without H2O2
2013-08-03 by AlienRelics
Has anyone checked the Files or Links section for info on etchants? I had archived this post in the Files/Etchants folder: Making copper etchant with
Re: Starting a CuCl etchant bath without H2O2
2013-08-03 by AlienRelics
How about using copper sulfate in chimney cleaners instead of copper hydroxide? I think they also often contain TSP, aka TriSodium Phosphate. Steve Greenfield
Re: [Homebrew_PCBs] Starting a CuCl etchant bath without H2O2
2013-08-03 by Philip Pemberton
... Yep - that certainly seems to be happening. I checked on it a few minutes ago and it s gone from sludge brown to a fairly bright green. It s nowhere near
Re: [Homebrew_PCBs] Starting a CuCl etchant bath without H2O2
2013-08-03 by Philip Pemberton
... My concern would be the effect it has on the pH of the solution. The Na2CO3 is going to react with the HCl and pretty much eliminate it if you add it
Re: [Homebrew_PCBs] Starting a CuCl etchant bath without H2O2
2013-08-03 by DJ Delorie
That s kinda how I did mine. Just keep bubbling air through it, it will eventually turn bright green.
Re: Starting a CuCl etchant bath without H2O2
2013-08-03 by AlienRelics
Looks like Oxy-Boost is 100% Sodium Percarbonate. http://www.textfiles.com/uploads/oxiclean.txt Steve Greenfield AE7HD