Re: 4 layer diy
2003-11-26 by Mike Cowlishaw
One thing I wasn t clear about after reading the excellent descriptions is exactly how the sandwich is made up. I had expected that for a 4-layer board one
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Re: [Homebrew_PCBs] 4 layer diy
2003-11-26 by Stefan Trethan
... That s the point. There is not much needed for what you want to glue. I know that regular (for them ) or normal (for us ) ;-) epoxy is much stronger than
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-26 by mpdickens
Here are a few specifics on the spray etcher I am building: Chamber dimensions: English 20.75 W X 20.25 L X 11.25 H Metric 518.75mm W X 506.25mm L X
Re: [Homebrew_PCBs] 4 layer diy
2003-11-26 by Markus Zingg
... Well, I cannot stress enough that the results I m getting are more than satisfying. The resulting PCB s are with regard to their useability in everyday
Re: [Homebrew_PCBs] Adhesives and Ferric Chloride
2003-11-26 by mpdickens
... Adam is absolutely right about PMPMMAeing the best, but sometimes it can be hard to find. .An alternative that has the same hahandlingharacteristics as
Re: [Homebrew_PCBs] Adhesives and Ferric Chloride
2003-11-26 by kenneth magers
also check your local hobby shop for a product called tenax 7r it is used for models but after buying some low and behold it is the same exact thing as what i
Re: [Homebrew_PCBs] Adhesives and Ferric Chloride
2003-11-26 by Adam Seychell
They make a special solvent cement for Plexiglas (synonyms: Perspex, PMMA). It looks like a clear thick liquid and contains methylene chloride and some very
Re: Adhesives and Ferric Chloride
2003-11-26 by Moore
... how to ... See: http://webpages.charter.net/pminmo/holder.png The sides are 3/16 pvc rods I bought from a hobby shop. The plexiglass is 1/8 I made my
Re: [Homebrew_PCBs] Adhesives and Ferric Chloride
2003-11-25 by Stefan Trethan
I would use epoxy adhesive. I have changed all my CA use to this, i hate throwing away ca that got hard in the bottle. no problem with this with 2 component
Adhesives and Ferric Chloride
2003-11-25 by Moore
I want to make a board holder out of plexiglass, but will need to do some gluing. Since it will be fully immersed in etchant, what kind of glue can I use?
Re: [Homebrew_PCBs] 4 layer diy
2003-11-25 by Stuart Winsor
In article , ... I think you guys are amazing doing all this. I m still on double sided using pre-coated etch resist and no PTH.
Re: [Homebrew_PCBs] 4 layer diy
2003-11-25 by Adam Seychell
Well, the proof is in the pudding as the saying goes. If you have had no problems with delamination or inner layer connectivity then it shows your method is
Re: motor inside etching chamber
2003-11-25 by Steve
... Polyester resin and epoxy are two very different things. And are not equally effective to all solvents. However, since this is not structural it doesn t
Re: Toner Transfer --Laminators
2003-11-25 by Steve
In the Links I have a folder for Toner Transfer and inside that is a sub-folder for Laminators and Heat Presses. Please, by all means add links for recommended
Re: masking and pads.
2003-11-25 by Dave Mucha
... print ... OK, There are work arounds, but what do the board houses do ? I was thinking a little brush on the drill so if you maksed first, the brush could
[Homebrew_PCBs] another rotrary sprayer
2003-11-25 by Stefan Trethan
http://www.computronics.com.au/rota-spray/ another rotrary sprayer design, good photo how it is constructed. st
Re: [Homebrew_PCBs] 4 layer diy
2003-11-25 by Markus Zingg
Hi Adam ... Thanks for letting me know :-) ... Well, I get reasonably well results. Let me put it this way, by doing the boards with this method, so far all
Re: Looking for opinions on PCB methods....
2003-11-25 by wheedal99
There s a Japanese site that I saw (didn t bookmark) that the guy just put some tiny stickers to mask off individual pads. The solder mask was also a Japanese
Re: [Homebrew_PCBs] motor inside etching chamber
2003-11-25 by mpdickens
... micro particulant misting... Great for some apps, but pretty much sucks when corrosive or otherwise dangerous chemicals are involved. However, I have been
Re: [Homebrew_PCBs] 4 layer diy
2003-11-25 by Ron Amundson
... for ... Thats great service and the price is amazing. Six months ago, I could have gotten 48 hour service for only a slightly higher fee from a number of
Re: Looking for opinions on PCB methods....
2003-11-25 by kg4wfx
... This is an interesting one - I have found only one solution so far, but I m not sure how I feel about it yet. There is a GC product called Red Insulating
Re: Looking for opinions on PCB methods....
2003-11-25 by Dave Mucha
... Don t forget the dust is copper and fiberglass. unless you remove it as the source, it will chew up your machine. As far as bits, go, Harbor Freight often
Re: [Homebrew_PCBs] 4 layer diy
2003-11-25 by Adam Seychell
Markus Zingg wrote: Drill those two holes so ... Actually the english word for what you describe is called a dowel. ... I have tried 5 minute epoxy on PCB
Re: [Homebrew_PCBs] motor inside etching chamber
2003-11-25 by Adam Seychell
Your suggestion about sealing metal parts with polyester resin was useful nevertheless. I should of mentioned that I wanted to run a stepper motor inside the
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Markus Zingg
... I already noticed that it greatly depends on where one lives. For those interested, 500GBP s are currently equal to ~$850. However, If you consider that I
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Leon Heller
... From: Ron Amundson To: Sent: Monday, November 24, 2003 1:40 PM Subject: Re: [Homebrew_PCBs] 4
Looking for opinions on PCB methods....
2003-11-24 by kg4wfx
Hi all, I appologize for the rather vague subject line, but I m having a little trouble. First off, want to say hi to the list, Although I have done some PCB
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Markus Zingg
Hi Ron ... I definately do have trouble with my english - not sure what you try to tell, but I DO create 4 layer boards at home on a regular basis not only 2
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Ron Amundson
... at ... The reason I would suggest 4 layer blind and buried vias is to avoid having to drill 0.005 holes or smaller at home and then try to DIY PTH. I
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Leon Heller
... From: Markus Zingg To: Sent: Monday, November 24, 2003 9:26 AM Subject: Re: [Homebrew_PCBs] 4 layer diy
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Markus Zingg
... Now THAT s funny! :-) I was even considering not replying to the original poster thinking that it might be some sort of bonding technology or such ! With
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Leon Heller
... From: Markus Zingg To: Sent: Monday, November 24, 2003 8:29 AM Subject: Re: [Homebrew_PCBs] 4 layer diy
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Markus Zingg
... Sorry for my ignorance, but what is a pcb diy? As for multilayer - I do this, meanwhile on a regular basis. The main thing you need is a through plating
Re: [Homebrew_PCBs] 4 layer diy
2003-11-24 by Leon Heller
... From: Ron Amundson To: Sent: Monday, November 24, 2003 6:26 AM Subject: [Homebrew_PCBs] 4
Re: [Homebrew_PCBs] motor inside etching chamber
2003-11-24 by mpdickens
... Adam, For whatever reason I did not read this part of your post. I think you are guaranteed a fine micro mist of etchant (Just like in a hot shower) inside
Re: [Homebrew_PCBs] motor inside etching chamber
2003-11-24 by mpdickens
... Yes: 2.) 60+ minute polyester resin, which is also known as epoxy, is both water, gasoline, fecl and hcl proof (Just to name a few). I ve used this in many
4 layer diy
2003-11-24 by Ron Amundson
Has anyone had any success with 4 layer pcb s diy? If so, what about blind or buried vias? Thanks Ron [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-24 by Adam Seychell
... Excellent, Will love to see the finished result. But don t rush it , let it be a rewarding and fun project. The cost will go up I m sure, it never goes
Re: [Homebrew_PCBs] motor inside etching chamber
2003-11-24 by Alan King
... No point in over-engineering this, use a $5 stepper and throw it away as needed. Less than 20 RPM likely won t even matter if the bearings corrode, and
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-24 by mpdickens
Oh yeah, I forgot to mention that the total estimated cost of this device as currently visioned is $110.00 USD excluding the nozzles, which I think is pretty
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-24 by mpdickens
... I ll look back through my emails. ... How are you planning on doing it? ... case you end up scraping it and starting again :) I ve leaned this the hard
Toner Transfer --Laminators
2003-11-24 by wheedal99
I was in Big Lots discount store recently and decided to pickup a couple of their cheap laminators that they carry --a 4 for $12.99 and a 9 for $29.99. I
motor inside etching chamber
2003-11-24 by Adam Seychell
Hello, I m wondering it its possible to seal the shaft from a very low RPM (
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-23 by Adam Seychell
I mentioned the nozzle types I m using in one of my earlier replies. What you propose sounds interesting. Just a quick warning, try not spend a lots of money
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-23 by mpdickens
... I set the pump up in a configuration I was told was the most common in an RV (At least, most RV s here in the US): 12 Volts 5.5 AMPS (The pump is rated up
Re: [Homebrew_PCBs] Re: ammonia etching for tin plating resist
2003-11-23 by Adam Seychell
... To my knowledge the only etchants known to be compatible with tin metal plating resists is the ammonia alkaline type. ALKALINE AMMONIA CHLORIDE ETCHANT: *
Re: Cupric chloride
2003-11-23 by roel_cnc
... this I ... of ... concentration. ... got a question is it attack only copper or also tin (tin as resist after patern plating) gr. Roel
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-23 by Adam Seychell
The Shurflo 2088-343-135 data sheet states 8.7 L/min at 2.1 bar. The Shurflo 2088-422-444 data sheet states 6.4 L/min at 2.1 bar. I did a google search and
Re: [Homebrew_PCBs] Pump for sray etching
2003-11-23 by Adam Seychell
I m glad it worked well for as mine has worked for me. The 2088-422-444 is identical to the 2088-422-144 pump I bought. Although in Australia they sell for
Re: [Homebrew_PCBs] Re: My first PhotoEtch PCB and Eagle questions - drilling
2003-11-23 by JanRwl@AOL.COM
In a message dated 11/22/2003 7:51:56 AM Central Standard Time, dave_mucha@yahoo.com writes: Does anyone drill the PCB before ... ALL professionals, and I