Change of plan
2010-10-14 by spacedcowboy@ymail.com
So, LPKF will sell their chemistry separately (they just sent me a price-list) and they too have a 3-stage plus plating-stage process using black-hole
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Re: Through-hole plating
2010-10-14 by spacedcowboy@ymail.com
... It looks to be a 3-stage process. They sent me the (Chinese) documentation, such as it is, and I ran it through Google to translate it. I still have some
Re: [Homebrew_PCBs] Re: Through-hole plating
2010-10-14 by Simao Cardoso
... So such machine is built for black hole chemistry? It requires double pass and micro etch (sulfuric acid with hidrogen peroxide or persulfates to remove it
Re: Through-hole plating
2010-10-14 by spacedcowboy@ymail.com
... [grin] I m not generally careless... It s just something that stuck in my mind because sitting and staring at a useless piece of circuit-board for an
Re: Through-hole plating
2010-10-13 by spacedcowboy@ymail.com
Hmm - this didn t seem to go through the first time, so trying again... ... Well, I m not trying to compete with a board-house, I m trying to save myself some
Re: Through-hole plating
2010-10-13 by spacedcowboy@ymail.com
... Well, I m not trying to compete with a board-house, I m trying to save myself some time. I tend to use an 18mil drill for vias at home anyway, giving me
Re: Through-hole plating
2010-10-13 by spacedcowboy@ymail.com
... Well, I m not trying to compete with a board-house, I m trying to save myself some time. I tend to use an 18mil drill for vias at home anyway, giving me
Re: [Homebrew_PCBs] Through-hole plating
2010-10-13 by Simao Cardoso
... Simon, If you find yourself careless about connectors pinouts i won t recommend that you run a pcb plating setup yourself... About time, i would point
Re: [Homebrew_PCBs] Through-hole plating
2010-10-13 by Bruce Parham
... A quick look at the spec s shows 16 mil (0.4mm) minimum hole size and 2.5:1 aspect ratio. Not so hot... A good board house can do 8 mil (0.2 mm) holes with
Through-hole plating
2010-10-13 by spacedcowboy@ymail.com
Hi all, Just wondering if anyone had used/heard-of the HW-K1000 machine seen at
Re: 1oz vs 1/2 oz
2010-10-13 by spacedcowboy@ymail.com
... I use 1-oz when I want to run higher-power stuff (recently, some LED drivers) but apart from that I typically use 0.5-oz. The time for me isn t an issue
Re: thinking of routing....
2010-10-13 by spacedcowboy@ymail.com
... Hmm - I ve got an EverPrecision EP-2002 machine, which I use to do all sorts of fine-line work. I can happily do a 208-QFP device (and have done, several
Re: Toner Adhesion Promoter: OT- Rose's Alloy-Tinning
2010-10-10 by bebx2000
... Chris, While Looking at your reference, I noticed the statement There is still everyone s favorite FGK-120 . I couldn t find any availability of the
Re: Toner Adhesion Promoter
2010-10-10 by alienrelics
http://www.citra-solv.com/newcitraartist/index.html Steve Greenfield AE7HD
Re: Toner Adhesion Promoter
2010-10-10 by alienrelics
You just need to join that group, too. Steve Greenfield AE7HD
RE: [Homebrew_PCBs] Toner Adhesion Promoter
2010-10-09 by Krzysztof Juszczak
Hi, See this --à http://radiokot.ru/lab/hardwork/34/ Russian site, but with google translate is you will know everything. Chris From:
Re: [Homebrew_PCBs] Toner Adhesion Promoter
2010-10-09 by Herbert E. Plett
sorry, the messages are private....
Re: [Homebrew_PCBs] Toner Adhesion Promoter
2010-10-09 by David Griffith
... [snip] ... I ll have to dig out my laminator and check this out. Hopefully it can allow Brother toner to work correctly. -- David Griffith
Re: [Homebrew_PCBs] Toner Adhesion Promoter
2010-10-09 by Dylan Smith
... Funnily enough I noticed a couple of years ago when I peeled an orange over a face-down piece of paper with some laser print on it (the paper I put there
Toner Adhesion Promoter
2010-10-09 by bebx2000
I came across a reference to CitraSolv concentrate for toner transfer on the inkjet transfer forum. This forum is mostly devoted to arts and crafts relative to
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-06 by DJ Delorie
If your pad is solidly connected to the plane, that s normal. Your EDA software should have a way to make a thermal barrier around the pad, which not only
Re: Trouble with through hole pads connected to plane
2010-10-04 by jan.vorlicek
I believe that one way to solve this problem is to preheat the board before the soldering. You don t need to buy an expensive preheater, a 50W halogen light
Re: Trouble with through hole pads connected to plane
2010-10-04 by Andrew
And so does Kicad ... Maybe we should ask which -- if any -- commonly used PCB programs do NOT include thermal relief options? :)
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-04 by Andrew Villeneuve
... EagleCAD also allows you to enable thermal relief patterns on copper fills/pours, and I d highly recommend it for any homebrew work. To enable it, get info
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-04 by Slavko Kocjancic
... The problem is that ground plane isn t conected to trought hole as thermal pads. ie the ground plane have only hole instead little hatch patern around hole
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-04 by Howard Chester
... Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane ... Hello Steve, Does your PCB package Have a thermal relief setting in the copper
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-03 by Donald H Locker
Oops Fingers are getting fatter ... [snip]
Re: [Homebrew_PCBs] Trouble with through hole pads connected to plane
2010-10-03 by Donald H Locker
Insufficient heat, basically. Ground planes such the heat away and solder will not flow where the temperature is too low. You may need a hotter iron or to
Re: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-10-02 by Donald H Locker
Thanks for the pronunciator - I couldn t come up with a single-syllable word that had the right sound - tall was best I could do. FWIW, I posted that email on
Re: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-10-02 by Roland F. Harriston
I agree with Mr. Locker. During my long and varied tenure in the electronics industry, toluene was, and still is, one of the materials that was (is) handled
Re: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-10-02 by lists
In article , ... As a one time industrial chemist I can assure you it is
Re: [Homebrew_PCBs] Precipitate in ferric chloride storage bottle
2010-10-01 by Slavko Kocjancic
... You need mode HCL and H2O2 to regenerate that. Just use straight HCL and H2O2 to etch board. ... For etching just use 9% H2O2 and HCL. One part HCL and
Re: [Homebrew_PCBs] Precipitate in ferric chloride storage bottle
2010-10-01 by Philip Pemberton
... Hmm, HCl+H2O2... isn t that the starter for a CuCl etch bath? That is, you mix HCl and H2O2, start up the air bubbler, then chuck in a few chunks of
Re: another GBC laminator mod results
2010-09-29 by Jeff Heiss
Yes, the motor is only driving the bottom roller. Driving both is nice but not needed. Copper clad goes through fine with only driving the bottom roller.
Re: another GBC laminator mod results
2010-09-29 by Jeff Heiss
You are correct. There are two layers on the ends. The white is teflon sheet I purchased from McMaster rate to 500F. During some tests, the FR4 was not
Re: another GBC laminator mod results
2010-09-29 by Larry
Homebrew Printed Circuit BoardsRegarding the GBC laminator: I found the laminator under closeouts at www.geeks.com. It is out-of-stock. Jeff: That was a
Re: another GBC laminator mod results
2010-09-29 by sailingto
Do you have a link to the 1701870 laminator at geeks.com? I watched your video and GREAT JOB! Ken H
Re: [Homebrew_PCBs] another GBC laminator mod results
2010-09-28 by Ryan Fobel
This looks great. I m not sure if I m seeing it right, but it looks to me like the motor is only driving the bottom roller. Is that true? What material are
another GBC laminator mod results
2010-09-28 by Jeff Heiss
Youtube video: http://www.youtube.com/watch?v=DY-ZWBdrHrs Album 1: another GBC mod Album 2: another GBC mod results Just wanted to pass along my results of
Re: need recommendations for free simple 2D CAD program
2010-09-27 by Andrew
... Yes, I lived in the PI for many years (though it was many years ago) -- a vast difference in the cost of labor! ... Interesting. Getting down to .0001
Re: [Homebrew_PCBs] Precipitate in ferric chloride storage bottle
2010-09-27 by Hector Garcia
2010/9/23 Philip Pemberton ... Regenerate it http://www.qsl.net/iz7ath/web/02_brew/14_howto/02_clor/index.htm regards -- Hector -- El
RE: [Homebrew_PCBs] Re: need recommendations for free simple 2D CAD program
2010-09-27 by Boman33
Charlie, Are they on a metric grid and it is being converted to inches? 2.5mm rounds off to 0.098 Bertho ======================================== From:
Re: need recommendations for free simple 2D CAD program
2010-09-27 by gandolfreefer
Thanks, Andrew. Your point is a very good one, and when I started running into dimensions that were going to four or five digits, I realized I had to rethink
cheap 3M lamiinator (TL901) thru Amazon.com
2010-09-25 by davemac2
For those interested: http://www.amazon.com/gp/offer-listing/B0010JEJPC/ref=dp_olp_new?ie=UTF8&condition=new Scotch(TM) Thermal Laminator (TL901) $17.99,
RE: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-09-25 by Ronald Cody
Hi, Many years ago I used Toluene when working at Rockwell aerospace. It s nasty stuff it is an accumulative poison that is absorbed through the skin. Over
Re: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-09-25 by Paul Mateer
When I first used acetone, I was using a paper towel and it did not work very well. I took an old worn out green scrubber soaked with it and it was like magic.
Re: [Homebrew_PCBs] Re: Direct Laser Printing on the cheap
2010-09-25 by Donald H Locker
Thanks for the tip. That would be spelled toluene (pronounced like tall you een ) Donald. -- *Plain Text* email -- it s an accessibility issue () no
Re: Direct Laser Printing on the cheap
2010-09-24 by mellow_dog
... Hello, This is my first post here. Just wanted to add that I just tried Touluene (Tolulene?). It took the cured toner right off the PCB. So I imagine it
Re: Tinning for Photo-resist?
2010-09-24 by Stephen
Stephen Lane wrote: the reason you remove the Photoresist is for joint high reliability when you solder the photoresist which is a plastic polymer of some
Re: need recommendations for free simple 2D CAD program
2010-09-24 by Andrew
... Charles, I am not familiar with emachineshop, and certainly wouldn t doubt that a company of this sort (with their own software) might be over-priced.