Re: Making PCB using these new 405nm LASER Diodes
2009-11-13 by lmri2071
The intention is to polimerize/depolimerize the etchresist and solder mask. In the industrie is know as LDI (Laser Direct Imaging). Before the blue-violet
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Re: Making PCB using these new 405nm LASER Diodes
2009-11-13 by lmri2071
Excellent news, I thought that Bichromate photoresist needs a high energy density. I gonna try with dry films for etch resist and solder mask with a LASER
Re: [Homebrew_PCBs] Making PCB using these new 405nm LASER Diodes
2009-11-13 by Donald H Locker
Hello, Volkan. Looks like you have your fingers in several pots (homebrew pcbs, direct print resist, homemade photo resist). I love it. Are you willing to
Re: [Homebrew_PCBs] Making PCB using these new 405nm LASER Diodes
2009-11-13 by Simao Cardoso
... Isn t there some rule which limits selling/marketing messages to one per month? ... http://www.htp.ch/lib/pdf/Liquid%20resist%20for%20PCM.pdf Once i found
Re: [Homebrew_PCBs] Re: Making PCB using these new 405nm LASER Diodes
2009-11-12 by Volkan Sahin
It s used for UV exposure. ... From: javaguy11111 Subject: [Homebrew_PCBs] Re: Making PCB using these new 405nm LASER Diodes To:
Re: Making PCB using these new 405nm LASER Diodes
2009-11-12 by javaguy11111
... I assume that you are doing UV exposure as opposed to ablation as mentioned in the earlier post.
Re: [Homebrew_PCBs] Making PCB using these new 405nm LASER Diodes
2009-11-12 by Henry Liu
Can your laser ablate the copper or just hardens the resist? If the former, I need to buy some blue lasers to try. ... [Non-text portions of this message have
Re: [Homebrew_PCBs] Making PCB using these new 405nm LASER Diodes
2009-11-12 by Volkan Sahin
I ve a working prototype. I m using 150mw 405nm blue ray laser diode. Without complicated optics I can get ~3 mil trace width/space. Currently, I m using
Re: [Homebrew_PCBs] Making PCB using these new 405nm LASER Diodes
2009-11-12 by Henry Liu
I think you need a 3W UV laser to ablate copper. I saw a UV laser at Fabtech with galvos in an enclosed case. No moving parts. It was sweet. They guy put a
Making PCB using these new 405nm LASER Diodes
2009-11-12 by lmri2071
I had this idea about seven years ago. But at that time the Laser Diodes of 405nm were impossible to obtain (USD$4000). Since last year, I have taken this
Re: [Homebrew_PCBs] Re: tape for resist?
2009-11-11 by cary heestand
Hi Andy, I ve been a lurker here a long time! Just now having some questions and getting around to actually doing something with my circuit. Yeah the
Re: [Homebrew_PCBs] tape for resist?
2009-11-11 by Bob Butcher
I have used electrical tape, Kapton tape, and packaging tape as an etch resist at various times, with moderate success. Often the etchant leaks under the tape
Re: tape for resist?
2009-11-10 by awakephd
Hi, Cary, Welcome to Homebrew_PCBs! Are you planning to make a board for an EDM controller? I keep wanting to update my design and put it on a pcb, but just
Re: [Homebrew_PCBs] tape for resist?
2009-11-10 by Kerry Wentworth
I like to use blue layout fluid, like machinists use. Makes a very thin coat, removes easily with acetone or methyl alcohol, and stands up to temperature.
Re: tape for resist?
2009-11-10 by Mycroft2152
I m just catching up on my email, been in the hospital for 3 weeks. Another possibility to cover large areas or even use as a resist (cutting out the traces
Re: [Homebrew_PCBs] tape for resist?
2009-11-10 by leon Heller
... From: cary heestand To: Sent: Tuesday, November 10, 2009 3:47 PM Subject: Re: [Homebrew_PCBs] tape
Re: [Homebrew_PCBs] tape for resist?
2009-11-10 by cary heestand
Thank you all for the great replies! Leakage on the edges won t be a problem. I originally was going to use a ball shaped burr in a dremel tool and
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by Harvey White
... I run the board through a laminator set to cold. I use Martha Stewart (tm) brand shelf lining. Remarkably inexpensive, needs pressing down and no heat.
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by JanRwl@AOL.COM
In a message dated 11/9/2009 3:07:47 P.M. Central Standard Time, c.hhestand@att.net writes: If it was more complex I would do it with toner transfer. Has
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by kabowers@NorthState.net
... I ve used Scotch Magic tape to mask the edges of boards with pretty good luck. As others have said, watch the edges. This extremely thin tape seems to
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by leon Heller
... From: packrat0_15 To: Sent: Monday, November 09, 2009 8:46 PM Subject: [Homebrew_PCBs] tape for
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by Stefan Trethan
I ve used it to mask the back side which I didn t want etched. The problem is that the etchant gets in along the edges of the tape unless you press them down
Re: [Homebrew_PCBs] tape for resist?
2009-11-09 by Roland F. Harriston
For a simple quick and dirty one shot PCB fab, use a waterproof Sharpie pen. Roland F. Harriston
tape for resist?
2009-11-09 by packrat0_15
I have a real simple but sort of large board to make. It s basically just some straight 3/8 wide lines to conduct from one point to another. If it was more
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-07 by Andrew Mathison
I like the idea, but I see a lot of problems at the design stage, in making sure that there is a hole in the outer PCBs to allow soldering, in fact, I think
Re: FeCl3 storage
2009-11-07 by morriso2002
... I (used to) think it s easier to store the anhydride. I started off that way a long time ago and like the exothermic reaction when it dissolves - helps to
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by DJ Delorie
... Double sided tape. I adhere the tape to the out layers, drill the blind vias (oversized), stick everything together, then drill the through-vias. The
Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by roycepipkins
Although I have not yet attempted it, my expectation is that it will work the same way bonding a 2 layer board out two singled PCBs works. Tape them together
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by Stefan Trethan
The craftsman is merely advising the architect that the straight walls and right angles would make it much cheaper to build and easier for every following
Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by roycepipkins
Imagine an architect came up to your wall-building craftsman, observed his plumb lines and precise right angles and proceeded to tell the craftsman that there
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by Trevor White
How do you bond a 4 layer board together? ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by DJ Delorie
I ve made 4 layer boards at home. Not as much fun, but it gets the job done.
Re: [Homebrew_PCBs] bare copper boards - cheapest place to buy
2009-11-06 by Stefan Trethan
Apart from ebay (where I also bought my supply) you can try board houses. Often they have cutoffs which they can not use in their production. What is cutoffs
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-06 by Stefan Trethan
You make 4 layer boards at home? When I make the boards myself I spend even more time on a good layout. After all I am the guy who doesn t have to spend time
Re: [Homebrew_PCBs] Re: FeCl3 storage
2009-11-06 by Adam Seychell
... Any particular reason you want it without water molecules ? You have to add water for it to etch anyway. People prefer to buy and sell a near saturated 40%
Re: Schematic Capture/PCB Creation program of choice?
2009-11-05 by awakephd
FWIW, I started using Kicad as a complete novice, and have not found the learning curve to be too hard. There are one or two things that work in non-obvious
Re: bare copper boards - cheapest place to buy
2009-11-05 by awakephd
I bought several boards from amt33461 on eBay. I was extremely pleased with the price, flexibility, communication, etc. No relation -- just a satisfied
Re: [Homebrew_PCBs] bare copper boards - cheapest place to buy
2009-11-05 by michael tenore
There are several good suppliers on eBay! that is where I get my boards from Regards mike ________________________________ From: wb5kye100
Re: bare copper boards - cheapest place to buy
2009-11-05 by fredbutz
There s a guy on EBay I buy tons of these board from. He cuts them to any size you want. Its a good deal. Just ook for the guy who cuts to size, thats him.
Re: FeCl3 storage
2009-11-05 by fredbutz
I ve been buying dry anhydrous ferric chloride on EBay for $9 a pound. Sorry, don t know about OZ. Can you ship the stuff from the US?
bare copper boards - cheapest place to buy
2009-11-05 by wb5kye100
Hi.. I m searching for a good, surplus, supplier of single and double sided PCB stock. 0.032 & 0.064 . I used to have the web address of a cheap supplier
Re: Schematic Capture/PCB Creation program of choice?
2009-11-05 by roycepipkins
send ugly mess to production ... I don t send anything to production. Virtually every board I make is a one-off, is home etched and is part of a competition
Toner Transfer with 5mil Traces
2009-11-05 by eldonb46
PCB Builders, Here are some examples of my success using Toner Transfer, the later ones are with 5mil traces (just for fun).
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-05 by DJ Delorie
... gEDA s PCB does that. We re working on our third autorouter, but the current core one (#2) is pretty good. Not sure what the best way to eval an
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-05 by Stefan Trethan
I don t think laziness or lack of time is a good reason to use an autorouter or 4 layer boards. You ll spend much more time troubleshooting and stuff if you
Re: Schematic Capture/PCB Creation program of choice?
2009-11-05 by roycepipkins
Hi Cary, It s because I am an autorouter junkie. I only have so much hobby-time and I believe that using the autorouter saves me a good deal of time. So what
Re: Markus Zingg's Through-hole plating
2009-11-05 by spacedcowboy@ymail.com
... [posting this again now that I m a member of the group. Hopefully y all won t get it twice...] I found Markus site a while ago, and had some difficulty
Re: [Homebrew_PCBs] Tinning adapter for soldering iron
2009-11-05 by Simao Cardoso
... That s why i thought trying the tin sulfate from inexpensive pure tin bars (6eur per 250gram bar on the local hardware store). Electrolise them in a
Re: [Homebrew_PCBs] Re: Schematic Capture/PCB Creation program of choice?
2009-11-04 by cary heestand
Hi Royce, while I m new at all this and no expert. Why can t you make four layer boards by the following? Make a netlist with the traces that you want
Re: Schematic Capture/PCB Creation program of choice?
2009-11-03 by roycepipkins
More power to you on the better tutorials. I been wanting to switch to KiCad to get free 4 layer design, but I expect it will be quite a learning curve. So