Search the web
Sign In
New User? Sign Up
Homebrew_PCBs · Homebrew Printed Circuit Boards
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Real people. Real stories. See how Yahoo! Groups impacts members worldwide.

Best of Y! Groups

   Check them out and nominate your group.
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.

Messages

  Messages Help
Advanced
Messages 17710 - 17739 of 23865   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
17710
Not closed loop - open loop, stepper driven. ... it?...
lcdpublishing
Offline Send Email
Feb 1, 2007
10:40 am
17711
Chris, I only started to use this method last week, when I ran out of photo resist board. I have made about ten boards now with 2 failures which was due to the...
Barry Hitchen
panzer2uk
Offline Send Email
Feb 1, 2007
12:46 pm
17712
... I shorted the switch out on my laminator as a quick and dirty test. The next thing that happened was the over temp. fuse blowing! I noted also that the...
Derryck Croker
derryck_croker
Offline Send Email
Feb 1, 2007
2:10 pm
17713
On Thu, 01 Feb 2007 13:46:30 +0100, Barry Hitchen ... Hey, good to hear someone else is using verbatim paper. Which is yours, is there any number or weight or...
Stefan Trethan
stefan_trethan
Offline Send Email
Feb 1, 2007
6:23 pm
17714
Ok I am seeing the same problem with this 'working' paper as my other papers, and now I'm on a laminator, not an iron.... My problem is when I heat the...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
6:35 pm
17715
... I see something similar with my paper, it tends to rip off the board outline if i do not draw a second, wide, outline around it to anchor the paper to the...
Stefan Trethan
stefan_trethan
Offline Send Email
Feb 1, 2007
7:10 pm
17716
... I'm sure it not the paper, got to be the copper, but I cant see why only a few of us (well 2!) seem to see this. Unless its more noticeable with some...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
7:44 pm
17717
... I've gotten in the habit of outlining my boards too. For the green TRF, it also helps reduce wrinkles....
DJ Delorie
djdelorie
Offline Send Email
Feb 1, 2007
8:03 pm
17718
... no, remember that's stuck to glass fibers. ST...
Stefan Trethan
stefan_trethan
Offline Send Email
Feb 1, 2007
9:06 pm
17719
... And that does not expand? (looks for tape measure and a hot iron........)...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
10:15 pm
17720
... Sure does, but paper seems to expand or contract much more. Try it. The expansion coefficient of copper is mostly irrelevant because the PCB is much...
Stefan Trethan
stefan_trethan
Offline Send Email
Feb 1, 2007
10:58 pm
17721
Just noticed maplin now sell sodium persulphate and fecl......... I've never heard of sodium persulphate before, I dont read all the posts, just mainly the TT...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
11:28 pm
17722
Ok I have had enough tonight of TT I need to get 10 little 2 inch * 2 1/2 inch boards done. (only holds a pic and some transistors) I can buy the developer for...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
11:28 pm
17723
Anyone any comments on the UV lamps on ebay for drying nail varnish? seach on ebay with "UV nail lamp" Or what about those CCFL lights to put inside the PC...
Lez
lez_briddon
Online Now Send Email
Feb 1, 2007
11:41 pm
17724
The exposure is fairly critical, especially if your film doesn't have very high contrast. You can use sunlight but it is very hit-and miss. You need bright...
Leslie Newell
les_locost
Offline Send Email
Feb 1, 2007
11:56 pm
17725
I don't see why one of those nail lamps wouldn't work for small boards. You do need some method of holding the film firmly against the board. Any gap between...
Leslie Newell
les_locost
Offline Send Email
Feb 2, 2007
12:05 am
17726
... I've noticed they also sell replacement bulbs, much cheaper than the real type of bulb, in a pack of 4. I may try sunlight first, I only need to make 2...
Lez
lez_briddon
Online Now Send Email
Feb 2, 2007
12:16 am
17727
... From: "Leslie Newell" <lesnewell@...> To: <Homebrew_PCBs@yahoogroups.com> Sent: Thursday, February 01, 2007 11:56 PM Subject: Re: [Homebrew_PCBs]...
Leon
leon_heller
Offline Send Email
Feb 2, 2007
3:54 am
17728
... Leon, could you let me know how the paper/fiberglass is? Two layers or how? Copper is on what layer? Cristian...
Cristian
cristianbip
Offline Send Email
Feb 2, 2007
6:41 am
17729
... Just another board material, the copper is still on the outside. You can see descriptions here: <http://www.felsweb.com/lam_faq.htm#B> There was also a...
Stefan Trethan
stefan_trethan
Offline Send Email
Feb 2, 2007
7:52 am
17730
... From: "Cristian" <bip@...> To: <Homebrew_PCBs@yahoogroups.com> Sent: Friday, February 02, 2007 6:41 AM Subject: Re: [Homebrew_PCBs] Photo exposure ...
Leon
leon_heller
Offline Send Email
Feb 2, 2007
8:20 am
17731
... Mercury vapor bulbs will work the best and give the fastest exposure. Another way is to get a cheap 500 watt quartz halogen work lamp and use it for UV...
twb8899
Offline Send Email
Feb 2, 2007
12:17 pm
17732
I have a few questions about the mis-pro direct inkjet printing method. I saw it mentioned that the durabrite inks may soften during etching, is the same true...
dpersuhn
Offline Send Email
Feb 2, 2007
12:36 pm
17733
... 30 years or so ago I made a BUNCH prototype boards both at home and at work using #2 photofloods (IIRC 300W). A sheet of plate glass to hold the film in ...
keith
kabowers336
Offline Send Email
Feb 2, 2007
3:09 pm
17734
... Hi Lez, I used to do photo all the time. It's easy once you get the times down. I used the positve board stock as the process is easier and the results...
Bert
bertd.geo
Offline Send Email
Feb 2, 2007
3:24 pm
17735
Don't bother with UK sunshine - unless you only want to make boards for a few minutes on one morning a year. Its far too unpredictable: your tests, and your...
Len Warner
hejsek2005
Offline Send Email
Feb 2, 2007
3:44 pm
17736
Hi I have given up on TT, so I am gonna try photo method. How do do the artwork(photo mask)? By that I mean what sort of transparency, printer etc? Jeri ... ...
laxt57@...
laxt57
Offline Send Email
Feb 2, 2007
3:49 pm
17737
... lol your right their. ... Now that seems a good idea, if 'standard' white tubes work, then all I need is some 'energy saving' lights, usually about 8 or 11...
Lez
lez_briddon
Online Now Send Email
Feb 2, 2007
3:52 pm
17738
... Actually thats a good question, I'd not given much thought to that, I only have about OHT sheets left, and those are for inkjet, and I'd sooner use the...
Lez
lez_briddon
Online Now Send Email
Feb 2, 2007
4:04 pm
17739
What sort of inkjet have you got? Epson Durabrite ink produces very good quality prints. For some reason red seems to work best. I find toner tends to end up a...
Leslie Newell
les_locost
Offline Send Email
Feb 2, 2007
4:18 pm
Messages 17710 - 17739 of 23865   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help