I had this sitting in my inbox for ages now, finally I got around to try it and it is just what I was looking for. Can we use this tool commercially? To...
Hi Stefan, It is GPL so you can use it for any purpose. You could even sell it if you wished but any changes you make must be made available to others for ...
Not sure if people have heard about pico projectors that are slowly making their way out into the market. The ones that I have seen so far use LEDs as the...
The pico projectors I've seen are low res, less than NTSC TV. And 1080i isn't even as high a resolution as my 19" monitor. It has been said before here that...
... Hi Stefan , its nice to know someone out there has a use for it. Yes, its GPL and no restriction to use it commercially, provided the program is...
... A nice effort on finding a suitable etchant for metallic etch resist. I tried persulfate but that attacked tin enough to make it unreliable. From your...
Hi, Has anyone tried using a low power lasers from cd/dvd or blue ray burner drives? I expect the accuracy could be quite good. A blue ray laser should be...
... Funny! Yes is a crazy thing. But is PATENTED for pure tin metallic resists! Like i said is like the peroxide-sulfuric etchant, and from a searchable post...
Simao Cardoso
simaocardoso@...
Jul 3, 2009 4:51 am
23128
uspo 4545850 and 4632727 instead. My mistake....
Simao Cardoso
simaocardoso@...
Jul 3, 2009 4:58 am
23129
... I'm working on that, with red (only to see it) laser. Quite good results for the beginning. It melts the ordinary (cheapest) tonner. I have to solve: how...
Why not focus the projection and move either the projector or PCB while only exposing portions of the PCB at any one time. Essentially maskless lithography. ...
You are reinventing the 70's gerber photo plotters! See http://www.artwork.com/gerber/appl2.htm. Todays photo plotters use an lcd like a projector and raster...
Simao Cardoso
simaocardoso@...
Jul 3, 2009 2:40 pm
23133
Did you calculated the time needed by a 2 axis machine to print with a single beam??? I think isolation milling can beat that! See my post few minutes ago...
Simao Cardoso
simaocardoso@...
Jul 3, 2009 2:59 pm
23134
Looks like the copper sheets could be used for inkjet as well. I wonder what else the sheets could be attached to (fr4 can't be the only option...)?...
... There are some power modules that use smd transistors soldered on very thin fr4 boards which are glued to thick aluminium plate. It works at the same time...
Simao Cardoso
simaocardoso@...
Jul 3, 2009 10:41 pm
23136
I've uploaded and new version of gerb2tiff. Stefan, I got around to adding the feature to render multiple Gerber files to single bitmap. See file ChangeLog. ...
Howdy I have this "hare-brained" idea on another method to regenerate Cuperic Chloride etchant. I plan on getting some "Oxygen Tablets" (used in fish tanks,...
... I don't see why it wouldn't work. A bit expensive though for what you might possibly gain in relation to regeneration speed compared to room temperature...
There are ways to increase efficiency using pure oxygen, google for downstream reactor (also used for fish tanks). I already tried using a piece of a chlorine...
I heard from a chemist. Veterinarians use hydrogen peroxide at 35% strength for animal use. This should be available for purchase easily rather than the 3% ...
... My sister is veterinarian and told me the same. It is used to wash/clean big animals foots. Like horses or cows (i think already said this here). But...
Simao Cardoso
simaocardoso@...
Jul 6, 2009 10:59 pm
23143
In the USA, I purchased some 30-volume (I think that's 15%) H2O2 from Sally Beauty Supply. The sales people thought it was funny that a 55+ year-old guy was...
... 30 volume is 9%. In a pharmacy they said can mix the thing. But charge 20eur for mixing (plus the product) and that's more than i will pay for the thing....
Simao Cardoso
simaocardoso@...
Jul 7, 2009 2:18 pm
23146
How is Hydrogen Peroxide manufactured? Most chemicals don't have a hugely complicated manufacturing process. We might be able to duplicate it at home with...
Be very careful with the high strength H2O2. It can cause very serious burns. High strength H2O2 is used as a sterilizing solution in the manufacutering and...
... http://en.wikipedia.org/wiki/Hydrogen_peroxide Is complicated. You can search for books, papers and patents about it either. Is simpler to buy 35-50% in...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
