Re: [Homebrew_PCBs] Re: pcb overlay ?
2009-09-11 by Erik Knise
My brother just bought a silk screen setup to do shirts. Has anyone ever screen printed onto a circuit board? I figured the only difference would be the ink
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Re: [Homebrew_PCBs] Re: pcb overlay ?
2009-09-11 by Piers Goodhew
That, indeed, is the one and only method I ve heard of (short of actually silk screening it on). On a 1-layer board you TT the copper side and then TT the
Re: pcb overlay ?
2009-09-10 by kgerontianos
I ve made a silk screen, but haven t found an ink or method to apply it. I ve tried a couple of water based inks with no luck. I m thinking of using Testers
Re: [Homebrew_PCBs] Re: pcb overlay ?
2009-09-10 by Kerry Gerontianos
I ve made a silk screen, but haven t found an ink or method to apply it. I ve tried a couple of water based inks with no luck. I m thinking of using
Re: [Homebrew_PCBs] Re: pcb overlay ?
2009-09-10 by Erik Knise
I have heard of some people using toner transfer to etch and then after they clean off the board and use the toner transfer method again to print the silk
Re: pcb overlay ?
2009-09-10 by goodsurfer2000
how i can to make silk screen layer someone have a method for that .. to print in the pcb ...
Re: pcb overlay ?
2009-09-09 by goodsurfer2000
... helo thank , can you give one method or i use laser toner too ?
Re: [Homebrew_PCBs] pcb overlay ?
2009-09-09 by leon Heller
... From: goodsurfer2000 To: Sent: Wednesday, September 09, 2009 9:40 AM Subject: [Homebrew_PCBs]
pcb overlay ?
2009-09-09 by goodsurfer2000
how i can to make pcb overlay ? to show element electronic of the pcb ? thank you
Re: Solder mask liquid,
2009-09-09 by jcarlosmor
... I understand that nothing smell when you laminate the PCB, but are you sure that nothing smell when the PCB is baked? I think that you toaster oven is
Re: [Homebrew_PCBs] Super QAD soldermask options
2009-09-08 by Stefan Trethan
... Both will work. (As in I have tried both, but only thin potting araldite not the thick glue). There are also lotsa different spray cans with all sorts of
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-08 by Simao Cardoso
... If you look close between two near traces, is the dry film glued to the laminate or is air between? Around any copper trace don t you see air trapped
Re: [Homebrew_PCBs] Super QAD soldermask options
2009-09-08 by Piers Goodhew
... I reckon the araldite would cost you a few dB of refraction/ reflection. I guess I can easily test on one of the 5x0603 LED with header pin breadboard
Re: [Homebrew_PCBs] Super QAD soldermask options
2009-09-07 by Donald H Locker
I don t know if you are crazy, but it sounds like a plan to me. But why not just dip and coat the LEDs as well? If the araldite is sufficiently transparent,
Super QAD soldermask options
2009-09-07 by Piers Goodhew
With all this talk of proper solder masks, I thought I d ask about some more rough-and-ready options. I ve just successfully replaced the guts of my bike s
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-07 by Adam Seychell
... What is your light source ? Using LPI solder mask, I found a 2 minute exposure requirement from 4 x 8W BL tubes box. My UV LED box (15x15mm pitch grid,
Re: exposure sources (was: Solder Mask)
2009-09-07 by fredbutz
I bought a used UV Exposure unit off EBay for $75. Its pretty big, but works excellent. I think it was for exposing printer plates.
Re: Solder mask liquid,
2009-09-07 by fredbutz
I m using the Solder Mask UV Film from Think and Tinker -- with outstanding results. I ve never had a problem. No smell, nothing. I simply laminate it,
Re: Solder Mask
2009-09-07 by fredbutz
... Sorry, I got tied up with a weekend programming a database to track all these electronic components. I ll get to it soon. Chuck
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-06 by Piers Goodhew
Excellent! Independent verification! I m assuming the eagle code to print is some port of their existing code (with a lot more manual lifting), whereas the PDF
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-06 by Peter Harrison
... I would say it is a mac thing at the moment. I have Eagle 5.6.0 and Mac OSX 10.5.8. As far as I knew pretty well all printing on the mac is accomplished by
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-06 by Piers Goodhew
Uh, yeah, but the entire point of my post is that the direct printing is strangely smeared - that s what the pictures are of. Interested to see if it s just a
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-06 by Daniel Johnson
Piers, Why are you creating a pdf ? You can print directly from eagle. 3v0 ... From: Piers Goodhew Subject: Re: [Homebrew_PCBs] Eagle
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-06 by Piers Goodhew
... Well, if it looks fine in Illustrator (and Preview) I m pretty confident the PDF does not have whatever it is that the direct to- printer. What I did
Re: [Homebrew_PCBs] exposure sources (was: Solder Mask)
2009-09-05 by Ed Smith
My results are different. I have built two exposure systems and use boards that are laminated with photo resist by a PC shop in Jamestown,NC. With the 24 inch
Re: Solder Mask
2009-09-05 by jcarlosmor
... What model specifically do you mean? You could get very good results with the lamps about 5 centimeters from the PCB. There are considerations about
exposure sources (was: Solder Mask)
2009-09-05 by Adam Seychell
... After experience with both 395nm UV LED and BL tube (spectral peak 365nm) light sources, I would totally agree. The major problem with LEDs is light
RE: [Homebrew_PCBs] Solder Mask
2009-09-05 by Brian Thorp
... It s been a while since I ve posted anything, I haven t been making my own boards because of all the chemicals but I keep reading the posts from the
Re: [Homebrew_PCBs] Eagle (Mac) print quality
2009-09-04 by Daniel Johnson
Interesting problem. Try loading the eagle PDF into inkscape and have a look at it. I make solder paste stencils by printing the tcream layer in eagle. Next
Re: [Homebrew_PCBs] Re: Solder Mask
2009-09-04 by Andres Hernandez
I have this question: Does this black lights are switable for drifilm laminated too ? what would be the correct distance ? Thanks for your help
Eagle (Mac) print quality
2009-09-04 by Piers Goodhew
Hi List, I ve just posted a couple of photos ( http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/1611066276/pic/list ) showing something I ve noticed
Re: Solder Mask
2009-09-03 by sailingto
Fred, I d certianly be interested in seeing your video - I d LOVE to use some type of solder mask on my boards - sure makes them look nice. Ken
Re: [Homebrew_PCBs] Re: Solder Mask
2009-09-03 by Andres Hernandez
Hello again Please can you tell me what would be the best distance for exposure the Borads ? Thanks Atte AFHN ________________________________ From: jcarlosmor
Re: [Homebrew_PCBs] Re: Solder Mask
2009-09-03 by Andres Hernandez
Well I already have UV germicidal Lamps and I have been careful with those ones and I have seen they work for exposing silk screen applications (the method I
Re: Solder Mask
2009-09-03 by jcarlosmor
... Yes, some people use UV lighting for entertainment (which is dangerous for the eyes and skin). Although if you ask them, it seems that they do not know
Re: [Homebrew_PCBs] Re: Solder Mask
2009-09-03 by Andres Hernandez
When you mean a black light fluorescent lamps are the ones that are used into some clubes that makes your theet shine ?... or to see if a bill is original ?...
Re: Solder Mask
2009-09-03 by fredbutz
I m using a uv film solder mask with great results. If there is interest I ll post a video.
Re: Solder Mask
2009-09-03 by jcarlosmor
... The lpkf machines and supplies are intended for prototyping use. That is why they are overpriced. For prototyping I am not meaning hobby or small
Solder Mask
2009-09-03 by Viper62pr
Hello everyone. It s been a while since I ve posted anything, I haven t been making my own boards because of all the chemicals but I keep reading the posts
Re: [Homebrew_PCBs] Vias
2009-09-03 by Stefan Trethan
Tek used them too, and there were reliability problems. Also, it s comparing a product that is designed to do the job applied with a suitable press to a piece
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by Adam Seychell
... . It can seem a good option for the homebrew but the ... Thanks very much for sharing your experiences with dry film solder masks. After trying out the LPI
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by Adam Seychell
... Hi, I have both a homemade 395nm LED light box and a basic commerical UV BL tube exposure box. Using LED exposure, my photoresist dry film takes 70
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by fana cute
Simao is right, I use Adams method too. I use Adam s Wet lamination then press it with laminator, Thanks Adam, I use his tutorial for my blog..you can see at
Re: [Homebrew_PCBs] Vias
2009-09-03 by Tolga Abaci
I realize that reliability problems are a possibility. But even if that were the case, I think this is a quite valuable technique for some quick prototyping.
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by Henry Liu
... See my tutorial no modification needed except to your CD tray: http://www.fullspectrumengineering.com/tutorial.html You can buy an extra one for $10-15 if
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by DJ Delorie
... I have an R280 but it s not converted for PCB use. I use it to print photofilms and do glossy photos. ... How? How can the printer know where the copper
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by Simao Cardoso
... Adam, Your first board with LPI soldermask looks really good. I would prefere to buy boards from you than from some boardhouses out there. I used a lot of
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by Henry Liu
If you have an Epson Printer, you can just print it out and cure it. No wasted ink or extra exposure step needed. That way and placement accuracy is much
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by DJ Delorie
... How did you solder-coat that? ... I ve thought of using etch resist as a soldermask, but I don t know how well it would hold up. A spray can of UV-cure
Re: [Homebrew_PCBs] Re: Solder mask liquid,
2009-09-03 by DJ Delorie
I have a UV box with 99 LEDs, 395nm. Regular dry film takes about 5 minutes exposure; what would that work out to with your ink? Does your ink come in spray