Re: [Homebrew_PCBs] Microscope / smd soldering
2004-01-08 by Stefan Trethan
... I see.. still the method with the oven seems quite fast to me.. they just apply a line of solder paste across all the pins and it sucks itself where it
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Re: [Homebrew_PCBs] Microscope / smd soldering
2004-01-08 by Leon Heller
... From: Stefan Trethan To: Sent: Thursday, January 08, 2004 5:36 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Microscope / smd soldering
2004-01-08 by Stefan Trethan
... The trick with hot air or ovens is that it aligns the part itself. you just need to place it in about the right spot and the surface tension of the solder
Re: [Homebrew_PCBs] Microscope / smd soldering
2004-01-08 by Leon Heller
... From: Stefan Trethan To: Sent: Thursday, January 08, 2004 3:49 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Microscope / smd soldering
2004-01-08 by Stefan Trethan
On Thu, 8 Jan 2004 14:23:23 -0000, Leon Heller ... I d rather not look at my boards then ;-) do you solder them with hot air? i
Microscope
2004-01-08 by Leon Heller
I ve just received a cheap (75 GBP) stereo dissecting microscope I ordered for SMD assembly - I use a lot of fine pitch devices with 0.5 mm lead spacing (not
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-08 by Stefan Trethan
k ... That would be very nice... bad think i am using orcad and there are no ULPs (as far as i know). But this is a very GREAT tip you have there for all the
Re: [Homebrew_PCBs] Pad sizes using EagleCad and a late night office experiment
2004-01-08 by Brian Pitt
this utility will let you change all the pads at once IIRC ftp://ftp.cadsoft.de/pub/userfiles/ulp/change-pad-in-lbr.zip you might want to export the parts to a
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-07 by Peter Harrison
Hi ... There is a ULP in Eagle called change-pad-in-lbr.ulp You open a library, run the ULP and specify pad shape and size. The ULP will whip through your
Re: [Homebrew_PCBs] Xerox printers?
2004-01-07 by Leon Heller
... From: Stefan Trethan To: Sent: Wednesday, January 07, 2004 10:26 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Xerox printers?
2004-01-07 by Stefan Trethan
... couldn t you use mostly parts from a complete copier? Will the selenum coating break if you try to unroll a photodrum? ST
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-07 by Stefan Trethan
... There is some software with orcad for making teardrops afterwards. i never tried. i think if the pad is simply to small it will still be to small with the
Re: [Homebrew_PCBs] Xerox printers?
2004-01-07 by Leon Heller
... From: joshdewinter To: Sent: Wednesday, January 07, 2004 9:54 PM Subject: [Homebrew_PCBs] Xerox
Xerox printers?
2004-01-07 by joshdewinter
... with a ... then ... plate was ... the flat bed ... prototype PCBs. ... the plate ... then passed ... technique ... meaning to try ... Hi Leon. This
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-07 by Leon Heller
... From: Art Eckstein To: Sent: Wednesday, January 07, 2004 9:09 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] late night office experiment
2004-01-07 by Leon Heller
... From: Alan King To: Sent: Wednesday, January 07, 2004 8:37 PM Subject: Re: [Homebrew_PCBs] late night
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-07 by Art Eckstein
What I have done for enlarged pads is that I have made library addition to the wirepad library to include two larger oblong pads. One has a hole in the
Re: [Homebrew_PCBs] late night office experiment
2004-01-07 by Alan King
... Yes you still have to get the toner up above the melt point, so really shouldn t be much difference. What really would make a difference is to have no
Re: [Homebrew_PCBs] late night office experiment
2004-01-07 by Stefan Trethan
... You really want a new office laser do you? i mean sending plastic through it ;-) . No, i know what you mean, had quite a few jams myself... two things i
Pad sizes using EagleCad and a late night office experiment
2004-01-07 by joshdewinter
Hi guys. Thanks for the suggestion Marc. That drilcfg.udp utility is handy. I guess I should have gotten my terminology straight when I wrote that...I m
Re: [Homebrew_PCBs] Software, development methods, and pad sizes using EagleCad...
2004-01-07 by Stefan Trethan
Hi! nice to hear you like the group. the 8mil samples are by Pedro i think. i do 10mil without thinking now, but i am sure 8mil would be ok too. my quality is
Re: Software, development methods, and pad sizes using EagleCad...
2004-01-07 by mdr911
Josh, I hope this helps. A common problem that i have with Eagle cad is that the pad holes are too big. What I do is run a User Language Program called
Re: PCB Etching
2004-01-07 by mikezcnc
I have a suggestion for you: show us your first board and then concentrate on improvements. Mike ...
Re: Can I post pics? --> Stefan
2004-01-07 by Steve
Yes, anyone can. However I prefer them in the Files area. Please create a folder if an appropriate one doesn t already exist, I don t like loads of files in
Can I post pics? --> Stefan
2004-01-07 by joshdewinter
Hi again. I was wondering...can everyone post pics to the files and photos areas? -Josh
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-07 by mpdickens
Adam Seychell wrote: Hello Adam, You can get 30% h202 from the hardware store. I purchase it at home depot for $ 7.00 for 16
Software, development methods, and pad sizes using EagleCad...
2004-01-07 by joshdewinter
Hi everyone, and thanks for the warm welcome Stefan. I poked around and saw the database and photos, and was darn impressed. I ran down to the WalMart in
[Homebrew_PCBs] PCB Etching
2004-01-07 by Udara Dewamuni
Hi there, Thank you very much guys, ur information was really helpful for my experiment about the etching chemicals. U know what, if we could add some
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-07 by Adam Seychell
... Don t know who s making them commercially, but if you want to make your own just follow these easy instructions, :)
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Leon Heller
... From: Stefan Trethan To: Sent: Tuesday, January 06, 2004 11:17 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Stefan Trethan
... conductive? i know they are carbon but wouldn t have thought of...
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Adam Seychell
... Yes, you cannot electroplate without chlorine gas evolving from the anode. You need carbon anodes, not even platinum will survive. I ve read about a boron
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Stefan Trethan
... i did it by volume, it is not critical. i think the recepie i read was 12% by volume. it doesn t change much. many recepies call for 30% HCl diluted 1:1
Re: Etching Chemicals
2004-01-06 by dkesterline
... Like 850cc water and 150cc hydrochloric acid? (clearifing weight / volume, and initial strength of the acid.) ... One you want to etch, or just some scrap
Re: [Homebrew_PCBs] Re: New Project: Camera for PCB drilling, Soldering and Inspection.
2004-01-06 by Stefan Trethan
... if you remove the focus stop you can also use it through microscopes or field glasses. ideal too for making scope shots if you only have analog storage
Re: [Homebrew_PCBs] Re: New Project: Camera for PCB drilling, Soldering and Inspection.
2004-01-06 by Alan King
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3450296522&category=3666 That is the type I have. Break the stop for adjusting the lens, and it can focus
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Stefan Trethan
... too right. you need a chemist s shop. then it is really cheap. there are mail orders shops too of this kind if you find none. and the other option is pool
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-06 by Adam Seychell
Thanks for the description. I ve used HCl+CuCl and regenerate with air. Specific gravity is about 1.25 to 1.30 Its not a fast etchant, 30 minutes etch 35 um
Re: [Homebrew_PCBs] Re: Etching Chemicals
2004-01-05 by Stefan Trethan
... I fear it is pretty thinned (no more than 10%) ... The problem with diluted H2O2 (like 2% medical) is that you need a lot more. and the price is nearly the
Re: [Homebrew_PCBs] Etching Chemicals
2004-01-05 by Adam Seychell
You pretty much got the answers from Stefan and Denny. There are other etchants commonly used but are more difficult to control and better suited for industry
Re: Etching Chemicals
2004-01-05 by dkesterline
... is easy ... cheapest ... Muratic acid is widely used for cleaning masonary (bricks, block, etc) and controlling PH in swimming pools. Most any masonary
Re: New Project: Camera for PCB drilling, Soldering and Inspection.
2004-01-05 by sciciora
Just this morning I taped one of those Intel USB microscopes (QB+whatever) to my Taig mill to try and measure how far off my epson injet printer was (about
Re: [Homebrew_PCBs] Etching Chemicals
2004-01-05 by Stefan Trethan
On Mon, 5 Jan 2004 16:01:49 +0000 (GMT), Udara Dewamuni ... my personal choice is HCl and H2O2. this gives kind of CuCl etchant but faster regeneration. there
[Homebrew_PCBs] Etching Chemicals
2004-01-05 by Udara Dewamuni
Hi guys, I going to do an experiment with Etching chemicals. What is the best etching chemicals u guys recomand for PCB etching except Ferric Cloride? Cheers,
File - monthly.txt
2004-01-03 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line
Re: [Homebrew_PCBs] Re: New Project: Camera for PCB drilling, Soldering and Inspection.
2004-01-03 by Stefan Trethan
I already wrote that aiming cheap cameras (like webcams) through microscopes works, but you would need a microscope first ;-). I see enough without
Re: New Project: Camera for PCB drilling, Soldering and Inspection.
2004-01-03 by Dave Mucha
... inspection? ... not ... rebates all ... made. ... effort. ... and ... crude ... real ... I use a large high magnification magnyfing glass. It has a
Re: [Homebrew_PCBs] Re: Toner Transfer Method, comments on Mike's pcb photo
2004-01-02 by Leon Heller
... From: Stefan Trethan To: Sent: Friday, January 02, 2004 9:05 PM Subject: Re: [Homebrew_PCBs] Re:
Re: [Homebrew_PCBs] Re: Toner Transfer Method, comments on Mike's pcb photo
2004-01-02 by Stefan Trethan
... You can repair potentiometers with toner. I thought it is the iron powder acting as developer (transfers toner to photo drum) I didn t know that is
Re: Toner Transfer Method, comments on Mike's pcb photo
2004-01-02 by Steve
... with ... board? ... his so ... more ... It only has to slightly attack a thin layer to result in toner mixing into the board. Acetone can and will attack