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2008-10-07 by Stefan Trethan
I m sure, i ve read the documents just a few days ago because i m looking into putting up a small prototyping PCB line at work. Some german made PCB lines come
2008-10-07 by Adam Seychell
... Traditionally, people precipitate the copper in large tanks and after the solids settle, it should be below about 5ppm and ready to dump. ion exchanges are
2008-10-07 by Russell Shaw
... Here you can buy and use toilet un-blocker tablets with several grams of copper. You can buy and use *sack loads* of copper sulphate lawn moss killer here.
2008-10-07 by Stefan Trethan
The limit here in Europe is 0.5mg copper per liter of sewage. Some time ago i calculated how much water you d need to dilute the copper form a single board
2008-10-07 by Leon
... From: Adam Seychell To: Sent: Tuesday, October 07, 2008 9:13 AM Subject: Re: [Homebrew_PCBs]
2008-10-07 by Adam Seychell
... Spent FeCl would be considered industrial waste , which is apparently not accepted by the free annual hazardous waste disposal event organised by my city
2008-10-07 by Howard Hansen
In this area they have a hazardous waste disposable event once a year. You might ask around to see when a hazardous waste disposable event is scheduled for
2008-10-07 by Russell Shaw
... FeCl is used as a floculent in sewage treatment. CuSO4 is in toilet sewage pipe un-blocker tablets (root-rot). Used etchant is a very good weedkiller and
2008-10-07 by JanRwl@AOL.COM
In a message dated 10/6/2008 7:47:55 P.M. Central Daylight Time, steve@hobbs.uk.net writes: I ve been stockpiling my waste etchant for too long, some time
2008-10-06 by lets_offroad
... May I ask how one is meant to dispose of FeCl3 etchant once it s spent? I ve been stockpiling my waste etchant for too long, some time soon I need to get
2008-10-06 by Steve
Which looks remarkably like the Micropen that Tony referred to. http://www.micropen.com/ Not to be confused with the Cross Micropen nor with PDA styluses. ; )
2008-10-06 by John Kent
The last posting reminded me of the air pen. http://www.silkpaint.com/airpen/
2008-10-06 by Leon
... From: lcdpublishing To: Sent: Monday, October 06, 2008 11:15 AM Subject: [Homebrew_PCBs]
2008-10-06 by Stefan Trethan
A minimally maintained CuCl etchant works well for me, right next to machinery and tools. The etchant container is covered, and i also put an upside down
2008-10-06 by lcdpublishing
Hi guys, I have been using Ferric Chloride for a few years now - works fine and is easy to get and dispose of when spent. The downside is the mess. I know
2008-10-05 by Steve
What is wrong with sharing it here? I m sure a lot of us would like to hear about this. Steve Greenfield ... carbon ... lines ... (?) ... between ... color
2008-10-05 by TonyB
Hi PCBers, Mostly lurking, but thought I d comment on this thread. Have U ever heard of MicroPen? I used to work with their equipment about 10yrs ago. I was
2008-10-05 by woodmastermcmlxii
Hi all someone from the group suggested I join and tell you all about my Lexmark 25 hack. I read the epsom hack somwhere on the net but didn t want to have to
2008-10-04 by Steve
... A gentleman named Fogassa is building a 3D printer using a Lexmark. He is not using the printer electronics to run the head, he s using his own drivers and
2008-10-04 by Leon
... From: lcdpublishing To: Sent: Saturday, October 04, 2008 2:11 PM Subject: [Homebrew_PCBs] Re:
2008-10-04 by lcdpublishing
I have done some various experiments with engraving (isolation milling) or plotting of resist lines using CNC machines. I do not feel this is a good approach,
2008-10-04 by Leon
... From: KeepIt SimpleStupid To: Sent: Saturday, October 04, 2008 4:52 AM Subject: Re:
2008-10-04 by Stefan Trethan
I ve even tried those carbide tip cross groove plotter pens (basically what was said to be the best). It didn t work either, the trailing edge scratched too
2008-10-04 by Henry Liu
Seems like a pen might not be ideal. What about an inkjet head attached to a cnc? The reason for the CNC is that I already have a CNC with .0001 repeatable
2008-10-04 by KeepIt SimpleStupid
I d try Rapidograph pens http://www.dickblick.com/zz210/03/ If I remember right they are basically a hollow tube with a wire in them. The wire actuates a
2008-10-04 by RICHARD HEILIGER
I have tried this. Not using PcbGcode, since I use DeskCNC. I output a dxf file from DipTrace. Input the .dxf file into DeskCNC. Use the pocket command to
2008-10-03 by Steve
Yes, in fact it has been done usually using plotters. Look in the Links, Photos, and Files sections of the group here. Some have reported issues with the pen
2008-10-03 by Cristian
... (mechanically) etch only isolations, not entire copper. Google for mechanical etching to see what s about. Cristian
2008-10-03 by Stuart Livings
... Can you use the CNC to remove the border of the tracks instead of the majority of the copper? We achieve this by making the majority of the board a
2008-10-03 by Leon
... From: Henry Liu To: Sent: Friday, October 03, 2008 5:30 PM Subject: [Homebrew_PCBs] attaching a pen
2008-10-03 by Lez
... is it not then a plotter............
2008-10-03 by k5nwa
... I have not tried it but the pen should have some kind of spring pushing it into the PCB at a constant pressure rather than ridgedly mounted.. Cecil K5NWA
2008-10-03 by Henry Liu
Has anyone tried attaching a very fine pen to a cnc then etch the pcb board? Right now I m using pcb-gcode but it s a pain because it takes so long to remove
2008-10-03 by Stefan Trethan
I m most curious if anyone has experience with toner transfer and spray etchers. Will the toner hold up to the etchant spray? I d even send a board with a
2008-10-03 by lcdpublishing
Thanks guys, that gives me a bit of confidence to give it a go with toner transfer. I also checked into various forms of photoresist and it turns out that it
2008-10-01 by DJ Delorie
I ve gotten down to 8.33 mil with TT with a fair degree of reliability. 6.66 I can do if I m careful and put extra copies of the board on the print - there s
2008-10-01 by Stefan Trethan
I have found that a sponge, or piece of foam rubber, will take those off easily. The foam rubber is soft enough not to damage the traces, and you can rub quite
2008-10-01 by Leon
... From: lcdpublishing To: Sent: Wednesday, October 01, 2008 10:54 AM Subject: [Homebrew_PCBs] How
2008-10-01 by Dylan Smith
... With toner transfer, 10/10 is quite easy. I ve made my own board for a 0.4mm pitch LQFP-80 package, which will be something like 8/8. The biggest problem I
2008-10-01 by lcdpublishing
Hi guys, From this ground I have learned about toner transfer and PCB making and have been doing it for a couple of years now. Recently, I have been starting
2008-09-29 by Ebbe
... this. ... Snip...... Thanks a lot for the tip, sadly i threw away my Ikae-catalogue some time ago, but will remember this the next time it s dropped in the
2008-09-29 by William Nelson
I suggested that somebody look up an easy question like that and they got mad and said they didn t have time and that was what the group is for. Some people
2008-09-29 by Jan Kok
1. It depends on the thickness (1 oz copper?) 2. It depends on whether it s on an inner or outer layer. 3. It depends on the acceptable temperature rise and
2008-09-29 by Leon
... From: James Grant To: Sent: Monday, September 29, 2008 5:39 PM Subject: Re: [Homebrew_PCBs]
2008-09-29 by James Grant
Well isn t it nice to see such a friendly person ! Tongue in cheek James ... From: Herbert E. Plett Subject: Re: [Homebrew_PCBs]
2008-09-29 by Herbert E. Plett
that strip should me able to carry 100amp without burning fingers... http://www.interfacebus.com/PWB_Internal_Trace_Capacity.html may I suggest you do your
2008-09-29 by per.zapro
Hi! I am using the Ikea catalog for toner transfer. It is _very_ good at this. I m using an HP 3200m laser printer and some no name laminating machine,
2008-09-29 by Leon
... From: James To: Sent: Monday, September 29, 2008 9:58 AM Subject: [Homebrew_PCBs] Highest
2008-09-29 by James
If I have a copper strip of 2.54 will I be able to pass a current of upto 10amp along it without it burning out. The voltage on the strip will be upwards but
2008-09-28 by Stefan Trethan
Fairly cheap too: Sadly it ll be hard to find outside the US. I also found the glossy