Re: [Homebrew_PCBs] Re: Breaking the 6/6 barrier
2007-11-05 by DJ Delorie
... My main reason for pondering this is to get fan-out on BGAs *without* needing tiny vias. Not that I m considering using any at the moment, but they seem
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Re: [Homebrew_PCBs] Re: Breaking the 6/6 barrier
2007-11-05 by Steve Wiseman
... They etch thin copper, then plate it back up afterwards. That s a tricky process to do at home, I suspect. However, by the time you need 4/4 or whatever,
Re: [Homebrew_PCBs] Breaking the 6/6 barrier
2007-11-05 by Leon
... From: DJ Delorie To: Sent: Monday, November 05, 2007 2:34 AM Subject: [Homebrew_PCBs] Breaking the 6/6
New here and a question.
2007-11-05 by Chris
Hello, I just joined and have been using ferric chloride to photo etch brass sheets to make parts for models. This is a quick rundown of how it works:
Re: Breaking the 6/6 barrier
2007-11-05 by Andrew
DJ, My limiting factor on a small board is etching. I can make a phototool with 4/4 on a 1200dpi laser that has very little Fuzz . The photomask on the copper
Re: [Homebrew_PCBs] Breaking the 6/6 barrier
2007-11-05 by Bob Macklin
The plotter I worked on at Dickson in 1969 did use a laser in addition to the aperature wheel. The laser was fixed in position and the beam was positioned by
Re: [Homebrew_PCBs] Breaking the 6/6 barrier
2007-11-05 by DJ Delorie
Answering from the perspective of Home Brew PCBs ... ... Yes, I know what a gerber file is, and what a commercial photoplotter is. I wrote a gerber viewer
Re: [Homebrew_PCBs] Breaking the 6/6 barrier
2007-11-05 by Bob Macklin
Do you know what a GERBER machine is? It is used to make a photo mask. The GERBER is a laser photo plotter. I worked on the original at Dickson Eletronics in
Breaking the 6/6 barrier
2007-11-05 by DJ Delorie
I seem to be seeing a trend here, that regardless of the techniques used, with care one can get to 6/6 rules. How do we get past that? It must be possible in
Re: [Homebrew_PCBs] Re: direct inkjet, I can't figure this out
2007-11-04 by Volkan Sahin
For me inkjet printing is reliable and easy. I am no longer using any other method any more. It is clear that you can not get the same performance from the
Re: [Homebrew_PCBs] Re: direct inkjet, I can't figure this out
2007-11-04 by Bob Macklin
This seems like a lot of trouble and expense to avoid using TT paper or photo masking. Is it worth it? Bob Macklin Seattle, Wa.
Re: [Homebrew_PCBs] Re: direct inkjet, I can't figure this out
2007-11-04 by Kim Vellore
The etch rate of a warm solution is way higher than cold. regarding the preserving of the ink not sure, if the ink is dissolving or being etched by the
Re: direct inkjet, I can't figure this out
2007-11-04 by Lee Studley
I was wondering if it s best to use cold ferric solution, or warmed. I have one of those tanks that sprays the cold ferric chloride. I would guess that the
Re: direct inkjet, I can't figure this out
2007-11-04 by asiido
The problem was that there wasn t enough ink on the PCB. Since my printer has 6 different color cartridges and I only had a yellow one with pigmented ink, I
Re: direct inkjet, I can't figure this out
2007-11-04 by warrenbrayshaw
... As there are many steps in the process it would be helpful if you could eliminate the ones that are OK. You may have to experiment Prior to baking the
Re: [Homebrew_PCBs] direct inkjet, I can't figure this out
2007-11-03 by Volkan Sahin
Could you send some images before curing and after curing to figure out the problem? Keep in mind that If you use single color it will be low resolution. You
Re: [Homebrew_PCBs] direct inkjet, I can't figure this out
2007-11-03 by Bob Macklin
If you can try to tell the printer to print in grayscale. But the image may not be dark enough. Bob Macklin Seattle, Wa.
direct inkjet, I can't figure this out
2007-11-03 by asiido
I bought an epson R300 printer, and a Mispro yellow spongeless cart. Now I have tried to make PCBs with it but no success. I ve tried to prepare the pcb with
Re: TT Technique??
2007-11-03 by jeanzlr06
Hello. Before, I tried TT but for no avail. I read from the sites that they used photo paper so I experimented on it. I even used four different photo paper
Re: [Homebrew_PCBs] Re: TT Technique??
2007-11-02 by DJ Delorie
... 0.1 is HUGE! ;-) So yeah, go try it. 8 mil is easy with TT. Here s more inspiration: http://www.delorie.com/pcb/smd-challenge/old/proto-boards.html The
Re: TT Technique??
2007-11-02 by Lee Studley
Guys, I m impressed with this link. I thought you guys were all talking ancient dip 0.1 spacing stuff wiht the TT technique. That board is impressive at that
Re: [Homebrew_PCBs] Re: TT Technique??
2007-11-02 by sml
Ok, so here it is. I am a complete first timer, and have spent the past few weeks amassing all the items from everyones tips, websites, and forums. So today
Re:TT technique, removing toner after etching leave part of it on the e
2007-11-01 by RICHARD HEILIGER
I find that just plain 600 grit aluminum oxide sandpaper takes the toner off just fine. Then a quick rub with a nylon abrasive pad takes out the scratches if
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-11-01 by Stefan Trethan
Yes, and acetone is cheap. But i am cheaper and that would use way too much of it for my liking. I think it depends a lot on the toner how well it flakes off
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-11-01 by Michel Baguet
Hi everybody, Looking to solve this problem, I found in my garage on a shelf an old bottle of synthetic thinner for paint, toluene based (don t know if it can
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-11-01 by Bob Macklin
Acetone is a solvent that actually coftens the resin used to make PCBs. Soaking the board is not a good idea. I just rub mine with a paper towel moisend with
Re: TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by dagmargoodboat
I m with Stefan. After etching, I clean off the toner in running water, using gentle pressure from a stainless steel pot-scrubber pad, the same one I use for
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by Michel Baguet
Thank to all for your answers. It seems that it doesn t happen with all kind of epoxy, could be dependant of the manufacturing process. I ll frist try Kim s
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by Kim Vellore
I have noticed this happens when there is less Acetone and what I do is either have a dripping tissue paper with acetone when I rub it off so the board does
RE: [Homebrew_PCBs] Re: cutting SMALL! PCB's
2007-10-31 by Thomas D. Kask
Seems what was described in the sewing machine adaptation is a lot like a scroll saw. However, with resin fiberglass boards I always prefer a paper shear liked
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by Stefan Trethan
Don t use acetone to remove the toner, instead use a steel scraper or even the edge of another PCB to scrape the toner off mechanically. Then use acetone to
Re: [Homebrew_PCBs] TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by Harvey White
... It can. ... Not all that much ... I clean the boards with acetone, which seems to remove it. Of course, I also have some black PC material, which renders
TT technique, removing toner after etching leave part of it on the epoxy
2007-10-31 by bagmik
Hi everybody, removing toner from a PCB after etching leaves toner impregnating the epoxy, giving black clouds on it. Does anyone of you get the same ? Has
Re: [Homebrew_PCBs] Re: cutting SMALL! PCB's
2007-10-31 by YD
Chris Horne wrote: I regularly cut 100 or so of a board 2 x 1/2 and I use exactly that kind of paper cutting
Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-30 by Bob Macklin
What made it work for me was iorning with just the tip. I can get more pressue by applying it to the tip rather than the entire iron. I also use the full iron
Re: TT Technique??
2007-10-30 by juanabba
... Hi I am not convinced I am getting you right on your text above. quote Use the iron s EDGE (NOT it s surface) unquote do you mean to use the iron
Inexpensive Hot Air Soldering Tool
2007-10-28 by mycroft2152
For anyone looking for an inexpensive, yet very decent, hot air soldering tool, check out the Marvy Embossing Heat Tool.
Re: [Homebrew_PCBs] Simple PCB's using Techsoft 2D PCB and Roland Stika
2007-10-28 by Leon
... From: Steve Joblin To: Sent: Sunday, October 28, 2007 3:12 PM Subject: [Homebrew_PCBs] Simple
Simple PCB's using Techsoft 2D PCB and Roland Stika
2007-10-28 by Steve Joblin
Does anyone have any experience with this? It seems like a great product for simple circuits... It uses Copper Foil for PCBs and a vinyl cutting machine:
Re: [Homebrew_PCBs] Paper for Toner Transfer
2007-10-27 by Philip Pemberton
... HP Everyday Photo Paper, Semigloss. Very cheap, basically paper coated in a water-soluble coating. Print on, iron on, soak in water to remove. The whole
Re: [Homebrew_PCBs] Re: BGA Soldering: Hot air rework station
2007-10-27 by Norm Carlberg
Found: http://www.schmartboard.com/index.asp?page=products_bga BGA up to 400 balls. 1.27 and 1.0mm pitches. .8 and .5mm in the future. Norm ... From:
Re: Direct Printing : how to begin
2007-10-26 by Patrick
Oh, also - - using mispro magenta with a little black, I bake the boards in a toaster oven on high - and I can t get the ink off! I haven t tried long soaks
Re: Direct Printing : how to begin
2007-10-26 by Patrick
An update: Heads cleared, up and working - Windex on the park head for a day worked wonders. No more isopropanol! In fact, I ve found if I use IPA to clean
Re: [Homebrew_PCBs] Paper for Toner Transfer
2007-10-25 by Herbert E. Plett
Can you get magazines in Australia? Magazine paper makes excellent TT. Try and practice.... and don t forget the paper towel between the transfer and the iron!
Re: [Homebrew_PCBs] Paper for Toner Transfer
2007-10-25 by Mark Brueggemann
... Have you tried glossy magazine paper yet? It may not be as good as some of the photo papers but I ve had pretty good results just using pages torn out of
Re: [Homebrew_PCBs] Paper for Toner Transfer
2007-10-25 by Felipe Baldner
I use normal paper, 75g/cm^3... I ve also tried recicled paper and it works just as good. -- []´s Felipe Baldner fbaldner@gmail.com ... [Non-text portions of
Paper for Toner Transfer
2007-10-25 by don2822003
Hi all, can anyone tell me what paper is the best to use that is available in AUSTRALIA . I cannot get the recommended STAPLES SKU PICTURE Paper here, Staples
Re: [Homebrew_PCBs] Re: Eagle software users - a must read.
2007-10-24 by DJ Delorie
... Even PCB has that, and it s free.
Re: [Homebrew_PCBs] Re: soldering question
2007-10-24 by DJ Delorie
... It won t. It works well only because the hotplate heats the PCB evenly (assuming you have even heat, or move the board around to heat it evenly) and melts
Re: [Homebrew_PCBs] Re: Eagle software users - a must read.
2007-10-24 by Leon
... From: markuszingg To: Sent: Wednesday, October 24, 2007 10:45 AM Subject: [Homebrew_PCBs]