Re: [Homebrew_PCBs] slikscreen
2004-04-19 by Stefan Trethan
On Mon, 19 Apr 2004 02:22:19 -0000, lostwabbit2001 ... perhaps with silkscreen printing ? ;-) 3 other ideas that spring to mind: Plotter (multicolor, slow)
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Re: [Homebrew_PCBs] TT (was: Zeta plotter)
2004-04-19 by Stefan Trethan
On Mon, 19 Apr 2004 01:55:10 +0200, Willy Gooris ... yes look in the links section. You can use a fuser (laserprinter, copier) instead of
How to save all messages Re: messages
2004-04-19 by Steve
... Short of downloading each message by hand, there is Personal Groupware Offline. http://pgoffline.com/ It is shareware with a 30 day trial period. Much
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-19 by Adam Seychell
... If you don t know the electrode surface area then the answer can be anywhere from less than 100mA to above 10A. To take a guess I would start with cathode
slikscreen
2004-04-19 by lostwabbit2001
how can i make a componit silkscreen for a pcb? Thank you
Toner Transfer
2004-04-19 by Steve
... Don t forget to change the subject line. Look in the Links section of the list under Toner Transfer. For examples, look in Files under TT or Toner
messages
2004-04-19 by lostwabbit2001
Hi How can i save all messages to my hard drive? Thank You
RE: [Homebrew_PCBs] Zeta plotter
2004-04-18 by Willy Gooris
Thank you Stephan, I do not want to do to much work on it. I have an HPlaserjet 5N printer. How can I put this to use? How do you use toner transfer? Satchid
Re: [Homebrew_PCBs] copper laminate and phosphorized copper
2004-04-18 by Adam Seychell
... You are assuming the phosphor releases into solution and co-deposites with the copper and does so in the same concentration ratio (typically 0.05% P) they
Re: [Homebrew_PCBs] Zeta plotter
2004-04-18 by Stefan Trethan
... if it uses HPGL you can simply copy the file to the port using the dos console. ... yes and no. you could but i personally don t advise you to do so. It is
copper laminate and phosphorized copper
2004-04-18 by mpdickens
Question: Is copper laminate plated with phosphorized copper? If it is, a cheap source of phosphorized copper for thru hole plating would be the copper plated
Zeta plotter
2004-04-18 by satchid23
To all that know. I am new to this. When I found this forum, the long forgotten desire to make my boards with an old plotter came back to me. I have a Zeta
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-18 by Stefan Trethan
... Well, if i can get current densities that would be fine too. I just want to know if we are talking 10ampere or 100mA here, i have absolutely no idea. Also
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by Adam Seychell
... Read my earlier post of setting current density *ratios* between the anode and cathode. You can use large anode surface area to achieve low current density
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by Stefan Trethan
... Oh i didn t fear any problems with the resistance. i do not expect it to be significant. I just feared that the etchant will eat away the copper i plated.
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by mpdickens
... The resistance on the rods does rise as copper plates on to them. However, I ve never had the copper content up to the point that a rise in resistance
Re: [Homebrew_PCBs] Photoplotting Re: Small UV source
2004-04-17 by John Johnson
I was thinking of plotting right on the PCB. I found the violet LEDs again (Mouser), and in reading the data sheet, it caution of UV exposure. The wave length
Re: [Homebrew_PCBs] Re: CNC photoplotting (was Small UV source)
2004-04-17 by John Johnson
Thanks to everyone who replied and discussed this. I went to an electronics supply house yesterday, but all they had was positive boards and developer. Lasers
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by Stefan Trethan
On Sat, 17 Apr 2004 07:37:53 -0700 (PDT), mpdickens ... I feared if i use that low a current the etch may overcome the plating again. do
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by mpdickens
... Chlorine gas generation is not a problem unless too much current is used. My rule of thumb is if I see *any* bubbles, I ve got chlorine gas generating. For
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by mpdickens
... In the fastner section, I purchased a couple of small titanium bolts and cut off the portion with the threads. I suppose my point is that anything made out
Re: CNC photoplotting (was Small UV source)
2004-04-17 by Steve
... Red or IR. ... power at ... feasible with ... for, say, ... That power is going all over the place, though. Think of this: you can look directly at a 100W
Re: HP Plotters for Vinyl Cutting & software
2004-04-17 by Steve
You would be more than welcome to join the Signmaker list, too. http://groups.yahoo.com/group/signmaker A similar discussion is going on their right now. I
Re: cucl - electrolytic regeneration
2004-04-17 by ballendo
Marvin, How were these sold? (In other words, I haven t seen titanium rods listed in the hardware section at HD) Thank you in advance, Ballendo ... Home
Re: [Homebrew_PCBs] Re: CNC photoplotting (was Small UV source)
2004-04-17 by Leon Heller
... From: dkesterline To: Sent: Friday, April 16, 2004 9:40 PM Subject: [Homebrew_PCBs] Re: CNC
Re: [Homebrew_PCBs] Re: cucl - electrolytic regeneration
2004-04-17 by Stefan Trethan
what about clorine gas? more information please. ST
Re: [Homebrew_PCBs] Photoplotting Re: Small UV source
2004-04-17 by Cristian
... Sensitive pcb directly. ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Photoplotting Re: Small UV source
2004-04-17 by Cristian
... 12x12 for me will suffice. Cristian [Non-text portions of this message have been removed]
Re: CNC photoplotting (was Small UV source)
2004-04-17 by Dave Mucha
... printers ... (as well as ... The concept of a multi facted mirror that reflected the laser in time with the angle of the mirror would be a simple enought
Re: cucl - electrolytic regeneration
2004-04-17 by md30022
... FWIW, I ve been using two small titanium rods that I purchased at Home Depot for around $ 7.00 US. They are impervous to cucl (And for that matter, any
Re: cucl - electrolytic regeneration
2004-04-16 by adam_seychell
... screw. ... The problem with producing chloride gas is the process mechanically destroys the graphite electrode (anode, positive). Small bubbles slowly
Photoplotting Re: Small UV source
2004-04-16 by ballendo
Hello, Is this to be used for exposing the pcb directly? Or a photofilm? Bacause there are photofilms which can work with a standard red hene wavelength diode.
Re: [Homebrew_PCBs] Re: CNC photoplotting (was Small UV source)
2004-04-16 by Roy J. Tellason
... I don t know offhand, but you can find a *lot* of info on those (as well as the lasers in cdroms, and other lasers) at repairfaq.org, if I m remembering
Re: CNC photoplotting (was Small UV source)
2004-04-16 by dkesterline
This idea of CNC photoploting has got my wheels turning. Does anyone know what wavelength the laser emitters in laser printers are? I m thinking that it might
Re: [Homebrew_PCBs] cucl - electrolytic regeneration
2004-04-16 by Stefan Trethan
On Fri, 16 Apr 2004 10:22:49 +1000, Adam Seychell ... i fear you might just be right with that.. However i did a quick experiment yesterday. first i used two
Re: [Homebrew_PCBs] Re: Small UV source
2004-04-16 by Cristian
... Owing a Bungard CNC, I m also interested. Visit Maplin UK at www.maplin.co.uk, looking for N76AJ, High Power UV LED Narrow Directivity or N75AJ
HP Plotters for Vinyl Cutting & software
2004-04-16 by T. W. Jolly
I have been reading that some of you are interested in doing PCB s from vinyl masking cut on plotters. And about converting plotters to vinyl cutting plotters.
Re: [Homebrew_PCBs] cucl - electrolytic regeneration
2004-04-16 by Adam Seychell
They use an ion exchange membrane in the regeneration cell. I m not exactly sure what the membrane is doing in this situation. Obviously its separating ions
[Homebrew_PCBs] cucl - electrolytic regeneration
2004-04-15 by Stefan Trethan
also a few lines on chemical regeneration. discussion welcome on how and if one could build a electrolytical
Re: [Homebrew_PCBs] cucl - effects of heating
2004-04-15 by Stefan Trethan
well, nobody seems to have an idea so i did a small experimant. used 2 glass containers, same size, etchant, same amount in both from the same batch. then 2
Re: HP Plotter--- into cutter???
2004-04-14 by Steve
Since I did post about making PCBs using sign vinyl as etch resist, I can t complain, can I? ; ) The blade is held so that it barely sticks out of the holder.
RE: [Homebrew_PCBs] HP Plotter--- into cutter???
2004-04-14 by Pete Brown
Is it a flatbed, or does the paper hang from the plotter? If the latter, how will you keep it all together as you make cuts. I don t think you can control the
Re: HP Plotter--- into cutter???
2004-04-14 by Steve
... http://groups.yahoo.com/group/signmaker Check the links there. A company makes blade holders for a variety of plotters. I m a moderator there. The rough
Re: Small UV source
2004-04-14 by Steve
... There are UV LEDs. The question will be how long an exposure. You ll naturally need to focus it down to a point, which will also increase the density of
Re: [Homebrew_PCBs] Small UV source
2004-04-14 by Stefan Trethan
... maybe a lcd could be used as a shutter? maybe some sort of fiberoptic could be used to connect the (bigger) lightsource to a small head. must look out for
Small UV source
2004-04-14 by John Johnson
I m thinking about making a photo-plotter attachment for my router / mill. Do any of you know of a small UV light source that would be suitable? I ve found
HP Plotter--- into cutter???
2004-04-14 by SRY
Anyone in the group ever transformed an old HP Plotter into something like a vinyl cutter? What blades? Performance? Etc. On or off list. Thanks. Gordon
[Homebrew_PCBs] picture of 6mil board & various things
2004-04-13 by Stefan Trethan
again, sorry for messing up with the adresses and the flooding now... last message.. ST hi.. for those interested i have put a picture of a 6 mil board i just
Re: assembly board houses ?
2004-04-13 by wheedal99
... time. ... http://groups.yahoo.com/group/E-Z_Bake
[Homebrew_PCBs] TT soaking / rubbing, foam rubber is great
2004-04-13 by Stefan Trethan
Hi all, just discovered foam rubber is great for rubbing paper residue off, really fast and doesn t damage the toner. it also gets out the paper of the holes