Re: Dissapearing Tracks in deveoper
2004-02-05 by tboneuk_2000
Thanks for the idea of measuring the powder, I hadn t thought of that way to do it. Adam wrote:- Before worrying about exposure times, try as I said before,
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Re: TT for silkscreens
2004-02-05 by poitsplace
... Office Max has some (relatively) inexpensive glossy and semi-gloss papers. I seem to recall it was about $10 for 50-100 sheets (they also have some coated
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by John Greene
Hi Tbone, I think you are way overexposing it. I use the sun ( I live in AZ ) and it only takes 30 to 35 seconds per side and I get perfect results every time
Re: [Homebrew_PCBs] Re: Of Ink Jets and Such
2004-02-04 by pebo festus
yes i read it, thanks for the link steve. mebo ... __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it!
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Adam Seychell
... I think the makeup of positive photoresist developer solution is 10 +/-2 grams per liter of sodium hydroxide. Are you using that ? If you cannot measure in
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Stefan Trethan
... eliminate all unknown variables, good idea. ... with the boards i used one could see a yellow/green discoloration if you hold it at an agle against the
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Leon Heller
... From: tboneuk_2000 To: Sent: Wednesday, February 04, 2004 9:21 PM Subject: [Homebrew_PCBs]
Re: Dissapearing Tracks in deveoper
2004-02-04 by tboneuk_2000
... may ... been ... hit ... transparent ... efficientcy or ... of light, ... pad). ... Although it may not make a differance I fliped the film over, so the
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Stefan Trethan
On Wed, 04 Feb 2004 17:06:49 -0000, tboneuk_2000 ... it is better to put the ink to the board because of undercutting of light, however i have made a few
Re: google unit conversions
2004-02-04 by Dave Mucha
... also ... I use 2.6mm to inch for my length conversions in Google. Also, try typing in your phone number (770) 640-0034 and it will give you the company
Re: Dissapearing Tracks in deveoper
2004-02-04 by tboneuk_2000
I have just looked at the film I used and discovered the print may have been the wrong way around. I presume the ink should have been next to the board, I had
Re: [Homebrew_PCBs] google unit conversions
2004-02-04 by Stefan Trethan
O ... That s nice, thanks. i combination with the g in opera it is really useful... i have to read what else google can convert.... ST
Re: Of Ink Jets and Such
2004-02-04 by Steve
... And you end up with a plastic coated board that won t etch, but has a pretty picture on it. ; ) Dye sublimation prints on a Tshirt or mug are waterproof
Re: Of Ink Jets and Such
2004-02-04 by pebo festus
... to be ... well--am wondering if one could coat the blank pcb with some kind of polymer coating? then print with sublimation ink. i see that it heats
google unit conversions
2004-02-04 by wheedal99
... board. ... You can also type 300F in C in the google search field. It ll also do some pretty obscure unit conversions.
Re: TT for silkscreens
2004-02-04 by wheedal99
... TT ... to ... wouldn t ... adjustable ... worked ... fairly large ... I believe that should have been plenty hot enough. You should see the toner begin to
First attempt at TT
2004-02-04 by Phil
I ve used press-n-peel with mediocre results and reading this group got me interested in the toner transfer technique using, of all things, glossy magazine
Re: Dissapearing Tracks in deveoper
2004-02-04 by tboneuk_2000
Thanks everybody , here is a little more information As both the developer and etchent were from the same company and in the same packaging I used an
Re: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Adam Seychell
... Actually, milliliter = gram = centimeter cubed
RE: [Homebrew_PCBs] Re: Dissapearing Tracks in deveoper
2004-02-04 by Roger, in Bangkok
Hi Tbone-- One teaspoon roughly equals 5 milliliters ... milliliters = milligrams = centimeter-cubed in terms of water, so adjust accordingly. Regards/Roger,
Re: [Homebrew_PCBs] (unknown)
2004-02-04 by Leon Heller
... From: tboneuk_2000 To: Sent: Wednesday, February 04, 2004 1:07 AM Subject: [Homebrew_PCBs]
Re: Dissapearing Tracks in deveoper
2004-02-04 by tboneuk_2000
Thanks Roel, I will try an unexposed piece tommorow, the instructions stated 10mg of developer per 100ml of water. I did not have any scales to measure this
Re: [Homebrew_PCBs] Dissapearing Tracks in deveoper
2004-02-04 by Adam Seychell
I assume you are using positive acting resist, where the exposed portions of the resist become soluble in the developer. If you experienced incomplete
Re: Dissapearing Tracks in deveoper
2004-02-04 by roel_cnc
Hi Tbone, put in the developer a unexposured pcb, it may not disolve the resist if it dos its to strong I think your to short in exposure time or maybe lights
Dissapearing Tracks in deveoper
2004-02-04 by tboneuk_2000
Hello all, Wondering if anyone could point me in the right direction. To find the correct exposure time I made up a strip of inkjet transparent film with 10
Re: [Homebrew_PCBs] Digital non-contact temp gauge at Sears
2004-02-03 by Stefan Trethan
... And what exactly is the advantage compared to the temperature probe on the multimeter? i mean the whole thing with the emmisivity is not worth the trouble
Re: [Homebrew_PCBs] Digital non-contact temp gauge at Sears
2004-02-03 by Ron Amundson
... not? ... Most multimeter probes are very inaccurate when trying to read a surface temperature. They are fine for insertion, or for measuring fluid or gas
Re: [Homebrew_PCBs] Digital non-contact temp gauge at Sears
2004-02-03 by Ron Amundson
... The fudge factor will work as long as the temperature you are trying to measure is reasonably close to the temperature used to create the fudge factor. If
Digital non-contact temp gauge at Sears
2004-02-03 by Steve
Craftsman Infrared non-contact digital thermometer, with laser pointer and 6:1 ratio (one inch circle at 6 inches). Up to 6 feet away, 518F/270C max. Number
Re: TT for silkscreens
2004-02-03 by Steve
... this list ... wouldn t ... Just googled- PnP Blue says 275 to 325F for an iron. http://www.techniks.com/how_to.htm And 300F is about 150C, so your
Re: Of Ink Jets and Such
2004-02-03 by Steve
You mean inkjet sublimation ink. It won t work, it is a dye that requires a polymer to transfer into. http://www.dyesub.org Steve
Re: PCB Books
2004-02-03 by nuclearspin2000
Thanks all for the help. -Dave ... two ... available. ... and
Of Ink Jets and Such
2004-02-03 by milwiron@terrorbydesign.com
Has anyone tried a Epson sublimation printer? The ink is supposed to be waterproof .
Re: [Homebrew_PCBs] TT for silkscreens
2004-02-03 by Stefan Trethan
On Tue, 3 Feb 2004 21:51:26 +1000, Dean Thompson ... Nice one, i too wanted to try it for some time, but i am to impatient to prepare
Re: TT for silkscreens
2004-02-03 by dkesterline
... for ... a few ... cleaned ... probably ... that next ... printer ... page! It ... That s pretty good results for a first time! Did you do anything special
Re: TT for silkscreens
2004-02-03 by Dave Mucha
... Uh... The Greeen scouring pad is often called Scotch-Bright and is a plastic sandpaper. It will grind away steel like any sandpaper. The white stuff is
RE: [Homebrew_PCBs] TT for silkscreens
2004-02-03 by Anthony Toft
Nice work! I have been toying with the idea of using toner to put the silk screen layer, but usually I am too impatient and just want to put the components
TT for silkscreens
2004-02-03 by Dean Thompson
Hi All, Anyone used toner transfer to do silkscreens? I ve been lurking on this list for quite some time, and just yesterday made my first PCB using the TT
Re: Sunny making his first PCB
2004-02-03 by Ben H. Lanmon
... I use Ivex WinBoard, can be set to 90, 45, any angle and arc. I normally use the 45 deg. angle setting for traces. When designing modules of compontents
Re: [Homebrew_PCBs] Re: TT and trace width.
2004-02-02 by Stefan Trethan
... similar problems here too.. but it works for the large pads and 0,5mm tracks fine... (seldom need more) i guess this is because the laser printer can t
Re: TT and trace width.
2004-02-02 by Phil
well, I ve only done a couple of pcbs but I had a similar problem - the transfer didn t go that well for bigger areas. I was pretty concerned about it since
TT and trace width.
2004-02-02 by dkesterline
Is it just me, or do other people have more trouble with wide traces than thin ones? I can TT a 24 thou trace easy, but if I try a 100 thou trace it s fuzzy,
Re: Sunny making his first PCB
2004-02-02 by dkesterline
... You might ... frequency ... low-speed ... as my ... outside ... The new version of Eagle can do curves. I recently built a PCB for a PLD programmer with
Re: [Homebrew_PCBs] Re: Sunny making his first PCB
2004-02-02 by Leon Heller
... From: Tony Smith To: Sent: Monday, February 02, 2004 5:11 PM Subject: [Homebrew_PCBs] Re: Sunny
Re: Sunny making his first PCB
2004-02-02 by Tony Smith
90 degrees bends are bad as the trace will act as a mini antenna. You might think you won t have a problem since you not doing radio or high frequency stuff,
Re: inkjet way to pebo
2004-02-02 by Dave Mucha
... you ... If ... for ... your ... Ditto ! I have received the highest level professional help, that would have cost hundreds of dollars per hour, not the one
Re: [Homebrew_PCBs] Re: Model of laminator used
2004-02-02 by Derryck Croker
... Trimmed and bottom-posted. Beware that home laminators may not reach a high enough temp to successfully transfer toner from the carrier sheet to the
Re: [Homebrew_PCBs] Re: Standard inkjet inks for etch resist? -more
2004-02-02 by Stefan Trethan
... I encountered the following problem: all felt/nylon tips i hade had a line with dependent of moving speed. if you move fast enough, it is thick enough. but
Re: [Homebrew_PCBs] inkjet way to pebo
2004-02-02 by Stefan Trethan
... You ARE a very cynical person! I was helped a lot by people who didn t know me at all. So there must be some good mind left in the word or not? ST
Re: Standard inkjet inks for etch resist?
2004-02-02 by Dave Mucha
... they ... Makes me think of buisness cards with the thick rasied letters. They dust the ink with something that expands when heated. since the ink may not