Do these diamond burrs suck?
2005-12-11 by soffee83
Hi again! I recently received a ridiculous quantity of some suspiciously inexpensive 0.9mm diamond burrs I won on eBay. http://tinyurl.com/cncw6 I don t have
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Re: Silicon coated foil
2005-12-10 by rt2d_user
Hello, I have used an HP7470A to plot to a PCB, it s slow but very useable the trick is finding the finest felt tip pen(plotters are sort of obsolete so the
Re: [Homebrew_PCBs] Re: The notorious "web interface"...
2005-12-10 by Dave Hylands
... ...snip... Yeah, but if you re just using it to receive Yahoo group messages. The information in the Yahoo groups is all available to everyone else on the
Re: [Homebrew_PCBs] Re: The notorious "web interface"...
2005-12-10 by Mike Young
Furthermore... I failed to mention the privacy impact on anyone who writes to you at that account. This includes me and everyone else on the list. Beyond
Re: The notorious "web interface"...
2005-12-10 by soffee83
... Dave, Thanks. I don t know if something s changed now. If someone knows how to set the pop prefs or whatever maybe I could get it going. Agent shouldn t
Re: [Homebrew_PCBs] Re: The notorious "web interface"...
2005-12-10 by Mike Young
... From: Dave Hylands ... There are some rather severe personal privacy issues with gmail. I hate alarmist thought and thinking, but
Re: [Homebrew_PCBs] Re: A $500.00 "UV" non-trivial exposure box.....
2005-12-10 by Russell Shaw
... I got a 20W (equiv. to 100W filament) spiral-type black-light blue UV compact flourescent lamp yesterday from Bunnings for $10. These would work well in a
Re: [Homebrew_PCBs] Re: The notorious "web interface"...
2005-12-10 by Dave Hylands
Hi George, ... Huh? I don t have a paid Yahoo account (actually I don t even have an unpaid Yahoo account if you re talking about email), and I read all of my
Re: The notorious "web interface"...
2005-12-10 by soffee83
I guess Agent is out for me :( After chasing my tail around the Yahoo site, it looks like external mail (group) reading is only available on a paid Yahoo
Re: [Homebrew_PCBs] Re: Mechanical Etching
2005-12-10 by Jim Miller
thanks! ... From: soffee83 To: Sent: Friday, December 09, 2005 5:25 PM Subject: [Homebrew_PCBs] Re:
Re: Having a bit of experience now, why would someone wan...
2005-12-09 by lcdpublishing
Isn t it amazing how stupid it feels! Even bridges give me the creeps! ... don t like ... safer in a ... gutters all around
Re: Mechanical Etching
2005-12-09 by soffee83
... No problem. It s a pretty basic design. I built it after seeing this one- http://www.embeddedtronics.com/etchant.html Mine looks about like that. I just
Re: [Homebrew_PCBs] Re: Having a bit of experience now, why would someone wan...
2005-12-09 by JanRwl@AOL.COM
In a message dated 12/9/2005 6:41:47 A.M. Central Standard Time, lcdpublishing@yahoo.com writes: I have flown hundreds of thousands of miles in airplanes -
Re: [Homebrew_PCBs] Re: Mechanical Etching
2005-12-09 by Jim Miller
george any details on your tank setup? tnx jtm
Re: Mechanical Etching
2005-12-09 by soffee83
I ve seen several recommendations on throwing the FC in some cement mix, etc. to make a moon rock which you could throw in the trash (sorry if that s already
Re: [Homebrew_PCBs] Re: Mechanical Etching
2005-12-09 by Stefan Trethan
The ferric chloride is not the problem, the copper is. Copper is poisonous to bacteria and such. ST On Fri, 09 Dec 2005 17:03:38 +0100, Leon Heller
Re: The notorious "web interface"...
2005-12-09 by Bob_xyz
... ... There s no reason that you have to use the web site to read messages. You can just set your group preferences to Individual Emails . Regards,
Re: [Homebrew_PCBs] Re: Mechanical Etching
2005-12-09 by Leon Heller
... From: lcdpublishing To: Sent: Friday, December 09, 2005 2:24 PM Subject: [Homebrew_PCBs] Re:
Re: [Homebrew_PCBs] Also got to thinking about milling through holes in PCBs?
2005-12-09 by Evan Dudzik
I would imagine it would be more common on PCB s that are intended for consumer products where they have to stuff it into some odd-shaped enclosure, carve
Re: Mechanical Etching
2005-12-09 by crankorgan
I hear what you are saying. Years ago I used presensitized boards and that red plastic mask that you cut and pealed away. The Ferric Chloride I used back then
Re: [Homebrew_PCBs] Re: Mechanical Etching
2005-12-09 by Mike Young
... From: lcdpublishing ... Neutralize it in washing soda first. Arm & Hammer or whatever brand you find in the supermarket will do
Re: [Homebrew_PCBs] Also got to thinking about milling through holes in PCBs?
2005-12-09 by Stefan Trethan
Many board houses mill out the PCB outline with those. ST On Fri, 09 Dec 2005 15:36:30 +0100, lcdpublishing
Also got to thinking about milling through holes in PCBs?
2005-12-09 by lcdpublishing
I have buying those 50 piece bit sets from Harbor Frieght Tools - good deal, you get a blind mix of drills and mills. All around a good value to get some
Re: Mechanical Etching
2005-12-09 by lcdpublishing
... etching ... Yeah, they are much tougher out east with regard to toxic waste removal and such. However, why not just let the chemicals evaporate (it s
Re: Mechanical Etching
2005-12-09 by crankorgan
I live in New Jersey and I run www.kleinbauer.com as a real business Tax Number and all. Technically speaking mechanical etching keeps me from having to file
Re: [Homebrew_PCBs] Mechanical Etching
2005-12-09 by Leon Heller
... From: crankorgan To: Sent: Friday, December 09, 2005 1:29 PM Subject: [Homebrew_PCBs] Mechanical
Mechanical Etching
2005-12-09 by crankorgan
With mechanical etching you can mill and drill. Each bit will mill 3 to 4 4 X 6 boards. It is safer for students thats why the schools use the machines.
Re: Having a bit of experience now, why would someone wan...
2005-12-09 by lcdpublishing
Re: Having a bit of experience now, why would someone want to do isolation milling?
2005-12-09 by lcdpublishing
Yeah, I can dig the other uses for a CNC, that part makes sense. I was just looking for any real advantage to isolation milling over the chemical process. It
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Dave Hylands
... I ve found that gmail does a pretty good job of keeping the related messages together. If anybody wants an invite, let me know. gmail also does a good job
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Dave Hylands
HI Alan, ... Well, my email program is always open, and it automatically receives new messages. Then with one quick glance, I ve checked the equivalent of 50
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Russell Shaw
... I start mozilla in the morning and look at it periodically thru the day when it beeps about new messages. Absolutely no polling involved. ... Web boards
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Alan King
... You re not considering opening your email program, receiving, and looking at the folder to see if there are new messages polling ? It is simply something
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by David Griffith
... Ugh! Please, no web-based forum stuff! If you want to go anywhere near that, please consider Mailman instead. Check
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Dave Hylands
Hi Alan, ... Besides which, personally, I hate web forums, because almost all of them require me to poll to see to new messages. With email, they show up in my
Re: [Homebrew_PCBs] The notorious "web interface"...
2005-12-09 by Alan King
... Options are pretty limited at Yahoo.. I set aside some space, and I think Steve got the domain name so it could be set up too, but hasn t had the time to
Re: [Homebrew_PCBs] Re: Having a bit of experience now, why would someone want to do isolation milling?
2005-12-09 by Alan King
... I think it s more usually gearheads who are way more comfortable mechanically than in any other area, practicality doesn t enter into the equation.. Note
Re: [Homebrew_PCBs] Presensitised PCB
2005-12-09 by PPC
Dave, I am still having problem uploading the file. Email me offline if you want me to send the file attached directly to you. Weedy ... From: Dave Hylands
Re: [Homebrew_PCBs] Presensitised PCB
2005-12-09 by PPC
90 secs is good. I believe pre-warming of the lamp will take about 3 minutes. You can incorporate a simple vacuum pump so that the film will contact the PCB
Re: Having a bit of experience now, why would someone wan...
2005-12-09 by crankorgan
I have a super fund cleanup site near me that used Ferric Chloride to make circuit boards. Technically it is not an acid but it should be handled like acid.
Re: [Homebrew_PCBs] Re: Having a bit of experience now, why would someone wan...
2005-12-09 by JanRwl@AOL.COM
In a message dated 12/8/2005 5:08:42 P.M. Central Standard Time, lcdpublishing@yahoo.com writes: I would have to guess that this sort of laser would require a
The notorious "web interface"...
2005-12-09 by soffee83
I seem to recall someone here mentioning that they didn t care for this Yahoo layout. I ve got many a gripe with it as well, and am thinking about moving it to
Re: Post-Etch Topside Layout Labeling?
2005-12-09 by soffee83
... Good to hear for a cheapskate like myself. I bought something like a 12 square piece a while back locally, and it was like 15 or 18 dollars. I got a
Re: [Homebrew_PCBs] Presensitised PCB
2005-12-09 by Russell Shaw
... I made a UV lightbox with 125Watt HID lamp 24 from the glass, and in a cylindrical parabolic reflector (lamp lays horizontal). 90%+ exposure happens in
Re: [Homebrew_PCBs] Re: Having a bit of experience now, why would someone want to do isolation milling?
2005-12-09 by Mike Young
... From: lcdpublishing ... EDM, perhaps, but still suffers from imperfect flatness on the substrate.
Re: [Homebrew_PCBs] Having a bit of experience now, why would someone want to do isolation milling?
2005-12-08 by Dave Hylands
Hi Chris, ... Well, you re futher along than me (who hasn t made a board yet). I saw some nice photos of an isolation machine and a couple of boards produced
Re: Having a bit of experience now, why would someone want to do isolation milli
2005-12-08 by crankorgan
Here is a board I did four weeks back. Three UniPolar choppers using a L297-Tip120s and some logic diodes. Circuit worked but it was to noisy.
Re: Having a bit of experience now, why would someone want to do isolation milli
2005-12-08 by crankorgan
You can also coat the board with layout blue and then put a spring loaded scribe in the mill and have it scratch out the isolation then put the board in acid.
Re: [Homebrew_PCBs] Re: Having a bit of experience now, why would someone want to do isolation milling?
2005-12-08 by Stefan Trethan
If it were efficient, why isn t the industry using it? It takes ages compared to etching. About laser milling, yes, it s done these days. check with google.
Re: Having a bit of experience now, why would someone want to do isolation milling?
2005-12-08 by lcdpublishing
I just thought of something else regarding efficiency. Even though I don t make a lot of circuit boards, I have been etching two, and even, three boards at the