RE: [Homebrew_PCBs] trying to do the right thing
2013-03-09 by Rick Sparber
James, Perfect. Just what I was looking for. Even have the spare cement. Thanks! Rick ... From: Homebrew_PCBs@yahoogroups.com
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Re: [Homebrew_PCBs] trying to do the right thing
2013-03-09 by James
Mix it into some quick set cement, or plaster, make a brick. Put in bin. http://www.diystompboxes.com/smfforum/index.php?topic=50426.0 ... [Non-text portions
trying to do the right thing
2013-03-09 by Rick Sparber
I have about 1/2 pint of used ferric chloride. I put it in a pint plastic containers and mixed in a lot of baking soda. It is now a thick brown paste. Our city
PCB Milling bits
2013-03-09 by Boman33
Recently I remember an article about using broken PCB carbide drilling bits to make V tipped router bits. Basically grind the desired angle and then grind off
Re: Epson R800 and inks
2013-03-09 by AlienRelics
http://tech.groups.yahoo.com/group/Inkjet_PCB_Construction/ I m moderator of both groups. Steve Greenfield AE7HD
Epson R800 and inks
2013-03-07 by Trevor
I have an Epson R800 and was thinking about buying the CISS ink refill tank system. I was wondering if there is a recommended ink for it? I would like to print
Re: [Homebrew_PCBs] Re: A different PCB etching method proposal
2013-03-05 by Harvey White
... True, the difference is the transfer medium. Pulsar paper (perhaps the standard) costs about $1.50 per 8.5 x 11 sheet. Free leavings from a sign shop....
Re: Laminator recommendations
2013-03-05 by w9ran
... Thanks! More than I could have hoped for...just didn t know where to look. 73, Bob W9RAN
Re: [Homebrew_PCBs] Re: A different PCB etching method proposal
2013-03-05 by Charlie Taylor
isnt this just ths toner transfer method? maybe i am missong something but isnt this the same method as is widley used? ... [Non-text portions of this message
Re: [Homebrew_PCBs] Re: A different PCB etching method proposal
2013-03-04 by <earlannis@...>
On Sun, 03 Mar 2013 21:29:19 -0000 ... John, When I run the (Avery A9 900 SUPERCAST OPAQUE 12 YEAR CAST FILMS) paper through the printer it comes out with
Re: conductive epoxy
2013-03-04 by psykhon@...
To achieve enough conductivity, they use Silver primarily. Carbon based glues haves a resistance from few hundred ohms to several Kohms. Hence the price
Re: [Homebrew_PCBs] Re: Vinyl Cutter Conversion
2013-03-04 by Mark Lerman
Thanks for the input, Harvey. This little vinyl cutter uses very small steppers (1.7 dia x .6 thick) that draw about 500ma at 24 volts. The original board
Re: Laminator recommendations
2013-03-04 by AlienRelics
Take a look in the Database section of the group, people have reported their results with various laminators. Everyone, please add your own experiences, make
Re: [Homebrew_PCBs] Re: Vinyl Cutter Conversion
2013-03-03 by Harvey White
... As a note culled from the CAD/CAM group. Please be aware that the chip/chipset used in the boards can be a limiting factor. Some chips cannot be pushed
Re: [Homebrew_PCBs] Re: Vinyl Cutter Conversion
2013-03-03 by Mark Lerman
No, but it isn t that expensive, either. Another (free) alternative, as has been mentioned before is Linux and linuxcnc. You would have to become familiar with
Re: A different PCB etching method proposal
2013-03-03 by John
I just cannot get the nerve to run the vinyl through my HP 1102 Laser printer. It does work well with HP Presentation paper. John de W8CCW ... builder of
Re: Vinyl Cutter Conversion
2013-03-03 by tda7000
Unfortunately it doesn t look like it s free anymore.
Re: [Homebrew_PCBs] conductive epoxy
2013-03-03 by Mark Lerman
The reason I liked the master Bond stuff is that it is 1 part epoxy, unlimited working time because it heat cures at a low temperature. My thought was to use a
Re: [Homebrew_PCBs] conductive epoxy
2013-03-03 by Jan Kok
Chemtronics CW2460 silver epoxy is only $170 for 20 grams from DigiKey. It has a work life
Re: [Homebrew_PCBs] conductive epoxy
2013-03-03 by Mark Lerman
Final result: After a difficult set of interactions with this definitely non hobbyist friendly company (Master Bond), I was finally given the price of this
Laminator recommendations
2013-03-02 by w9ran
I ve been getting fairly good results with the iron method after working to standardize the process, but would like to ask for recommendations on laminators.
[Homebrew_PCBs] A different PCB etching method proposal
2013-03-02 by earlannis
Hi All, I m Earl Hancock, relative newcomer to this listserve, and a hobby builder of PCB s. Built my first board in 1954 physics class, groaned through the
File - monthly.txt
2013-03-02 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Mark Lerman
As one who has spent a LOT of time experimenting with direct laser printing, I can tell you it is not as simple as it sounds. Some laser printers work very
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by James Sleeman
... Negative dry film I use is quite happy under normal lighting, darkness not required. Just don t work with it in the sunlight.
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Todd F. Carney
... Derek, There are various forms of copper-clad Kapton (polyimide) film you might try for this idea. If you used one with, say, 1/2oz copper-clad and less
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Andrew Hakman
Not to be a total tool, but a legal size copier or printer will allow you to print to legal size - 8.5 x 14. To do 11x17, you need a ledger size printer /
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Rick Sparber
Be careful that the copper does not scratch the cylinder inside the printer. Rick
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Derek
Figure a single laser pass. More than once can mess up the fine lines. Derek Koonce DDK Interactive Consulting Services
RE: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by MIKE DURKIN
well .. maybe not so bad anymore .... 2160Sq for 75$ .... hummm ... ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by Leon Heller
... Darkness isn t required with the positive resist-coated boards I use. Leon -- Leon Heller G1HSM
RE: [Homebrew_PCBs] New PCB etching method proposal
2013-02-28 by MIKE DURKIN
do you mean on polyimide kapton copper clad laminate?? you can get it on ebay ... Actually thats not a bad idea .... then run through a laser printer a few
New PCB etching method proposal
2013-02-28 by Derek
I just had an idea of a better PCB generation system. It is still in the works, but may be a great solution. There is the photo-resist method that needs
Re: Vinyl Cutter Conversion
2013-02-27 by jeremy youngs
i would have to strongly suggest linuxcnc.org as an active user this is the best supported most configureable machine controller out there and its free :) --
Re: [Homebrew_PCBs] Vinyl Cutter Conversion
2013-02-27 by Mark Lerman
I ll look into it - thanks. I know very little about the specifics of HPGL, but it sounds like the way to go, here. The physical stepper driver is very easy
Re: [Homebrew_PCBs] Vinyl Cutter Conversion
2013-02-27 by Cristian
... Mark, why not output the HPGL in multiline format, with fixed pen width? ... Kcam4 is free and good for controlling a standard stepper driver. Cristian
[Homebrew_PCBs] Vinyl Cutter Conversion
2013-02-27 by Mark Lerman
Hello all, We ve visited this before - the Silhouette cameo vinyl cutter that Mike used to directly cut traces in copperclad. Unfortunately, I was not able to
Re: UV LED differences
2013-02-27 by within walking distance
... Your film could be responding to both the UV and blue light. Originally, photographic film would only record blue and UV because silver halide is
RE: [Homebrew_PCBs] UV LED differences
2013-02-27 by Tony Smith
... the ... that ... Dunno about UV, but the mcd (milli-candela) number even when not exaggerated is a bit of a lie. A candle rating is how much light a
Re: [Homebrew_PCBs] UV LED differences
2013-02-26 by Randall Morgan
From experience I can tell you that the amount and color tone of the visible light has little to do with the actual uv output. TI used to sell tiny button uv
UV LED differences
2013-02-26 by James
Hi all, does anybody know much about UV LEDs and the differences between them? I have a batch of UV leds from ebay, and a batch of UV leds from another chinese
Re: [Homebrew_PCBs] PCB-Milling
2013-02-25 by Cristian
... SprintLayout 5.0 of Abacom/Germany. Cristian
Re: [Homebrew_PCBs] PCB-Milling
2013-02-25 by HaHoLang@...
Hi Christian , what kind of software do you use ? Thanks Hans [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] PCB-Milling
2013-02-24 by Cristian
... If so, after doing the design in C1 or C2, switch to O (outline) and draw false outlines between the initial C1 or C2 tracks. Use only the O output
PCB-Milling
2013-02-24 by Hans
Hi , I make sometimes a pcb as hobby . I use the pcb program sprintlayout , convert the file to dxf and with a cam program to g-code . My milling machine is a
Re: Falambi/Pavo HD 320 laminator
2013-02-24 by quetzalcoatl_pl
Hello! I ve just bought a very similar machine, second-hand but claimed to be unused. This machine is one of a broad family, very varying in pricing and with
Re: flatbed scanner lamps
2013-02-24 by dave_donlan
Thanks all
RE: [Homebrew_PCBs] flatbed scanner lamps
2013-02-23 by Tony Smith
... About that, some boards need closer to 370nm. That s in the UVA band. The germicidal ones are UVC (200nm-ish). The UV LEDs you can buy are usually around
Re: [Homebrew_PCBs] flatbed scanner lamps
2013-02-23 by Cristian
... 405nm? Cristian
Re: [Homebrew_PCBs] Re: DIY pcb exposure box UV tl
2013-02-23 by Harvey White
... As I understand it, you re right. I used the germicidal lamps with the KPR chemistry (negative resist and relatively nasty stuff) many years ago. I needed