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2004-10-20 by Hugh Prescott
Dumb question probably but isn t the max presure (full space vacum) just equal to 15 psi relative to sea level. So if you could deep space max vacum the inside
2004-10-20 by Ben H. Lanmon
... dissolved in hot ... to home shop Look in the Links section under Equipment Suppliers. D & L Products has most of the old Kepro Line of Products. Ben
2004-10-20 by Thomas
Hi Gents I thought that I read somewhere that the applied pressure with the iron was checked with a set of scales and it was either 15 or 25 so Lbs, cant find
2004-10-20 by mikezcnc
A way to do make your own PCBs and be successful at it: 1. A certain laminator previously mentioned on this forum. 2. Staples paper. Just a reminder for people
2004-10-19 by ballendo
Hello, Although I like your idea... The MOST force you can get from a vacuum is 14.7 lbs/inch. At sea level. Most vac pumps are rated in inches of mercury, and
2004-10-19 by Phil
this is an interesting idea. Has anyone tried it? The bag should stand up to the temperatures needed. It just remains to heat the bag/board assembly. You
2004-10-19 by Phil
... You are so right mike. Its totally unreasonable that some people claim that there is only one way to do things.
2004-10-19 by mikezcnc
yes, that is quite amazing... Except for that paper is not politically correct because it offends the TT-feelings in some members...Mike ... amazed ... the
2004-10-19 by Earl T. Hackett, Jr.
IMO, plated through holes are more trouble than they re worth for small home projects. Most of my designs have at most 12 ICs and are only a few inches on a
2004-10-19 by Dave Mucha
... I would think the holes would need to be large. If the hole were thin, it would not stand up to the presures in re-drilling and would probably rip out of
2004-10-19 by Earl T. Hackett, Jr.
That sounds like an interesting approach to getting a plated through hole. However, any epoxy smeared on the surface of the board will kill the etching
2004-10-19 by Adam Seychell
... Lets assume this method can make reliable through holes it would require more work than conventional PTH processes. The step of making holes plateable is
2004-10-19 by Phil
I prefer the approach of not bothering to plate through my holes or use eyelets. I just make a via and take the trace to the solder side . Stick some wire
2004-10-19 by thespeakerguy
I was wondering if this may ne a reasonable approach: 1 - Drill the blank copper clad board with slightly oversize holes. 2 - Squeeege conductive epoxy into
2004-10-19 by JanRwl@AOL.COM
In a message dated 10/19/2004 1:09:30 AM Central Standard Time, thespeakerguy@yahoo.com writes: No answer, and this looks promising. Have you tried this? If
2004-10-19 by thespeakerguy
No answer, and this looks promising. Have you tried this? If so, let us know.
2004-10-19 by Earl T. Hackett, Jr.
If you have a vacuum pump (even a good shop vac or vacuum cleaner) you can put the board and the artwork in a Reynolds Aluminum Bake n Bag , pull a vacuum
2004-10-19 by Bob Weiss
I just made another test board using Staples Picture Paper and this time used more pressure and time under the iron and I am amazed at the quality you can
2004-10-19 by JanRwl@AOL.COM
In a message dated 10/18/2004 6:17:55 PM Central Standard Time, BWeiss@pressofac.com writes: What does one use to protect the copper when your finished with
2004-10-18 by Earl T. Hackett, Jr.
Most boards are finished with a solder coating to protect the copper from oxidation. This could be plated and then reflowed or by hot air leveling. I always
2004-10-18 by Bob Weiss
Thanks for the answers...I thought it was something you could do at home but I guess not. What does one use to protect the copper when your finished with the
2004-10-18 by Adam Seychell
... Google: soldermask http://www.rockwellcollins.com/about/additionalproducts/collinsprintedcircuits/page1823.html Normally applied as a film and
2004-10-18 by Stefan Trethan
On Mon, 18 Oct 2004 18:41:57 -0400, Earl T. Hackett, Jr. ... there is some photo-imaged laminate-on film i gathered. could be bungard, not sure. By the way,
2004-10-18 by Earl T. Hackett, Jr.
The green coating is a solder mask. It comes in a variety of flavors silkscreen applied epoxy, photo imaged epoxy (CIBA IIRC), and photo imaged acrylic
2004-10-18 by Bob Weiss
Does anyone know what they use on PCB s to give that green coating that they then apply silkscreening to? Can this be purchased? IF so where? What are the
2004-10-16 by lanz_24
Hi, Im a newbie n PCB making. I made gerber files using trial version of protel dxp. Problem Protel DXP only generates gerber files and i cant open the drill
2004-10-15 by Alexandre Souza
... As I said, as soon as I have time :o) I hope this weekend I can do that, since I need to do a board today, and I ll take time to take photos of every step
2004-10-15 by James Newton
... explained ... later I ll ... another ... useful) http://www.tabajara-labs.com.br/tt gets me a Not Found The requested URL /tt was not found on this server.
2004-10-14 by Bengt
Thanks Stefan, I will try to get it running, have to find suitable motor. Bengt ... that ... when ... the pot ... you want ... adjust ... left
2004-10-14 by Norman Stewart
I think they should change their slogan to You ve got questions, we ve got cell phones . - - - and their name from Radio Shack to The Phone
2004-10-14 by upand_at_them
... They do that to me all the time. Try not talking to them at all and see what happens. Here s one for ya...I think I was 14 years old at the time and they
2004-10-14 by Phil
You ve probably got a decent transfer. etch it, dano. For inkjet paper brands, look in the database section. There are a number of inkjet papers people have
2004-10-13 by patrickmancier
I am not an expert in PCB production and despite that I am interested in circuit layout and design. About a year ago, not really knowing anything I delved
2004-10-13 by Bob Weiss
Thanks for answering me, there was a couple spots very small that stayed on the paper when I pulled it off. I am assuming I didn t heat it long enough or press
2004-10-13 by Phil
I think people print on the shiney side. The transfered traces should look black (well, actually a very very very dark blue). If you see copper through them,
2004-10-13 by Stefan Trethan
... looks quite right, you will want to use a fairly large value for the pot to start with, say 500k or more. you can measure the resistance at 160C if you
2004-10-13 by Stefan Trethan
here you go: ST
2004-10-13 by Bengt
... The resistance is about 250Kohm in room temperature, decreases when warming up. Bengt
2004-10-13 by Bob Weiss
Hello, I am trying to make a pcb using the toner transfer method and have a couple questions regarding it. I hope someone can shed some expertise on them for
2004-10-13 by Bengt
Hi Stefan, In my Photo album I have one picture, is this a thermo *device* that can be used for the schematics you will provide? I have found the optocoupler
2004-10-13 by Stefan Trethan
On Wed, 13 Oct 2004 21:26:26 +0100, Philip Pemberton ... I assume the LJII would work, though haven t tried it. Work on the schematic and doc. ST
2004-10-13 by Philip Pemberton
... Could you send me a copy of the schematic, too? Also, uploading it to the Files section of the group page on Yahoo might be a good idea. I ve seen LaserJet
2004-10-13 by Stefan Trethan
... you can build a thermostat for the lamp with a few parts, i ll try to get you the schematic. for the motor a easy solution is a grill motor (which
2004-10-13 by Bengt
Hi, I have found one fuser as I think as a good candidate for DIY laminator. This is from a Lexmark Laser, 360W. Can anybody put me on the right track as
2004-10-13 by Steve
... I thought it was You ve got questions, we ve got blank looks. I used to go into Radio Shack and ask them crazy questions like Where are the cold neutron
2004-10-13 by Larry Nicks
In the jewelry and bead trade, sterling silver tube beads (also called heishi and liquid silver) are common. These are short sections of silver tube with
2004-10-13 by Phil
... More like, want a cell phone with that? True story - went into my local shack to buy a DC power connector - I think it was 2 bucks. The guy behind the
2004-10-13 by upand_at_them
... Which makes you wonder about their slogan: You ve got questions, we ve got answers . Ever ask them a question? I don t even think they know a resistor
2004-10-13 by Roy J. Tellason
... Is that like, You want fries with that? :-D
2004-10-12 by Alexandre Souza
... like the successes that I ve read about for the TT method, But I did find a paper that gave reasonable results ... if I could eat or break down the paper I