Re: bubbler system
2004-12-08 by James Newton
... for very ... regeneration. My dad showed me how to put very small holes in a cigar by passing the thing back and forth many times between the arc of a
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Re: bubbler system
2004-12-08 by Phil
I found a heated pin produces pretty large holes and, thus, pretty large bubbles. I used a #69 drill bit to get much smaller holes but would prefer even
Re: [Homebrew_PCBs] Re: component legend.
2004-12-07 by Stefan Trethan
On Tue, 07 Dec 2004 23:39:34 -0000, mycroft2152 ... thanks, will try. is krylon paint something special? what is it, acrylic? I grabbed
Re: component legend.
2004-12-07 by mycroft2152
I ve had the same problem toner transferring component legends on single sided boards. My solution was to first give the legend side a light coat of Krylon
Re: The Ultimate Etch-Resist Pen for Manual or Plotter Use
2004-12-07 by Phil
... Oh well, that s way too coarse for me. too bad, I found a used plotter for $10. ... you may have gone on about the characteristics but that doesn t/didn t
Re: [Homebrew_PCBs] Re: bubbler system
2004-12-07 by Stefan Trethan
... thanks. and here is was wondering how i could produce very small holes, for very small bubbles. It seems larger is OK, though small would be better for
Re: bubbler system
2004-12-07 by Radra
Think & Tinker has some suggestions regarding bubblers at http://www.thinktink.com/stack/volumes/voliii/equipment/bubltank/bublt ank.htm . Lyman ...
Re: [Homebrew_PCBs] Re: The Ultimate Etch-Resist Pen for Manual or Plotter Use
2004-12-07 by Stefan Trethan
... Check if there are refill bottles available. ST
Re: [Homebrew_PCBs] bubbler system
2004-12-07 by Stefan Trethan
On Tue, 07 Dec 2004 17:01:00 +0000, Leon Heller ... My container is unsuited for moving it. also it takes longer with my CuCl if i
Re: [Homebrew_PCBs] bubbler system
2004-12-07 by Stefan Trethan
On Tue, 07 Dec 2004 16:11:50 +0000, Les Newell ... Ok, i ll experiment with poking holes in a hose then. I thought maybe it is best
Re: The Ultimate Etch-Resist Pen for Manual or Plotter Use
2004-12-07 by Jackie Fetter
... I get lines of 0.025 max. Thinner lines are possible with less pressure but 25 mill works fine for me. ... After a few dozen boards I notice little wear.
RE: [Homebrew_PCBs] bubbler system
2004-12-07 by Leon Heller
... I ve got a rectangular stone, about 10 cm long. Haven t tried it with an air pump, though. I find that contnuous manual agitation of the etchant container
Re: [Homebrew_PCBs] bubbler system
2004-12-07 by Les Newell
Hi Stefan, You can make holes in a plastic tube but they need to be very small. I used a small pin that I heated up with a candle flame. If you use the pin
[Homebrew_PCBs] bubbler system
2004-12-07 by Stefan Trethan
Hi everyone. I decided i do need some sort of agitation for my etcher. i tried moving the board, it works well but tends to shake to board loose of the holder.
Re: GBC Laminator fot $30 at Office Max
2004-12-07 by borderlinerr2000
... may ... not ... Just purchased one of these, works like a champ, at least on the 2 by 1 board I tested. I gave it about 10 passes after letting the unit
Re: The Ultimate Etch-Resist Pen for Manual or Plotter Use
2004-12-07 by Phil
a couple of questions: - what is the width of the line produced by the fine point tip? ultrafine? - what are the wear characteristics? I assume the tip widens
Looking for people who need PCBs or Prototype Manufacturing
2004-12-07 by Number 1 Electronics Girl
Looking for people who need PCBs or Prototype Manufacturing I would like to connect with people who need Printed Circuit Boards or Electronics Prototype
The Ultimate Etch-Resist Pen for Manual or Plotter Use
2004-12-07 by Jackie Fetter
I just joined this group today and noticed that no one has mentioned the Sharpie Industrial pens in the message archive. IT HAS TO BE THE *INDUSTRIAL* VERSION.
[Homebrew_PCBs] component legend.
2004-12-06 by Stefan Trethan
Hi, toner transfer for compoent legend doesn t work well on single-sided boards. The surface is too shiny. Until now i only used it on areas where i etched
Toner Reactive Film
2004-12-05 by Kim Lux
I am about to make some printed circuit boards using a laser printer, the Pulsar transfer film and an H200 laminator. Do I need to use toner reactive film or
Re: GBC Laminator fot $30 at Office Max
2004-12-05 by Phil
... may ... not ... I m pretty sure it will work just fine. Hopefully the modification instructions are close enough. Probably are but you never know. If
GBC Laminator fot $30 at Office Max
2004-12-05 by mycroft2152
This weeks Office Max flyer has a 9 GBC laminator for $30. This may not be the 200 model that we ve discussed. But this is a GBC and not one of the clones. So
Re: [Homebrew_PCBs] Cleaning copper with lemon juice
2004-12-04 by Earl T. Hackett, Jr.
We often used citric acid as an anti tarnish after electroless copper. The dry film was applied on the scrubbed copper surface and then went on to dry film
Re: [Homebrew_PCBs] Cleaning copper with lemon juice
2004-12-04 by Adam Seychell
... Thanks for the tips Earl, I do not know what the ingredients are in the brightening additives I m using, but they don t seem to help the tarnish problem at
Re: Cleaning copper with lemon juice
2004-12-04 by Tom
Thanks for the information. I tried a couple more boards and this time skipped the rubbing alchohol wipedown after the lemon juice scrub. It may have helped
Re: Cleaning copper with lemon juice
2004-12-04 by curt_rxr
... by tin, tin/lead, or in the case of HP, nickel gold plating. If you wanted solder mask over bare copper the tin plating was stripped after the base copper
Re: [Homebrew_PCBs] Cleaning copper with lemon juice
2004-12-03 by Earl T. Hackett, Jr.
In commercial shops copper was almost always pattern plated followed by tin, tin/lead, or in the case of HP, nickel gold plating. If you wanted solder mask
Re: [Homebrew_PCBs] Cleaning copper with lemon juice
2004-12-03 by Adam Seychell
... I m having a hard time stopping freshly electroplated copper from tarnishing when the panels dry. The cause cannot be a sulfuric acid residue problem since
Re: [Homebrew_PCBs] Cleaning copper with lemon juice
2004-12-03 by Earl T. Hackett, Jr.
Not lemon juice, but citric acid was a common antitarnish when stripping print and etch innerlayers in caustic. Amines work better as an antitarnish, but they
Cleaning copper with lemon juice
2004-12-03 by Tom
Hi there, I m new to etching PCBs and to the group. Faced with some pretty tarnished copper clad I took the same approach that I use for cleaning copper
Re: H200 Laminator
2004-12-03 by Radra
Just repeated the temperature measurements using a different thermocouple. Temperatures at one inch from the end of the rollers are in the 285 F to 290 F
File - monthly.txt
2004-12-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line
Re: H200 Laminator
2004-12-01 by Radra
Hi Phil, If I recall correctly, the sensor is located adjacent center-bottom of the lower roller. Unfortunately, the temperature of the sensor and of that
Re: H200 Laminator
2004-12-01 by Phil
I was thinking that I would need to open it up, find the temperature sensor, put the thermistor there, close it up and run it until the light comes on. Then
Re: H200 Laminator
2004-12-01 by Radra
I measured the roller temperature as 287 degrees Fahrenheit (142 degrees Celsius). This measurement was rather tricky to make. I fed the thermocouple into
Waterproof black in Canon printers?
2004-11-30 by Steve
... It s waterproof on paper, don t know about on a slick nonporous surface. I can tell you from experience that anything not able to quickly and completely
Re: [Homebrew_PCBs] Teflon Toner Transfer
2004-11-30 by JanRwl@AOL.COM
In a message dated 11/29/2004 9:42:03 PM Central Standard Time, teecee@cbn.net.id writes: I have seen some of these dry lubricants as such in a spray can cant
Re: Protel 99SE track segments not continuous.
2004-11-30 by Phil
... by the way, in researching refilling my canon inkjet tanks I came across waterproof ink for the BCI-3e tanks.
Re: [Homebrew_PCBs] Teflon Toner Transfer
2004-11-30 by Thomas
Sounds interesting, how would a Teflon Spray work if it was applied to paper , I have seen some of these dry lubricants as such in a spray can cant remember
Re: Protel 99SE track segments not continuous.
2004-11-30 by mikezcnc
I did plotting on copper. It was an amdek plotter with a program somone wrote in Pascal and it used to be avaialble free on internet. It all worked fine but
Re: Teflon Toner Transfer
2004-11-30 by Phil
... well, probably an obvious one but what about bonding the teflon to a more stable carrier. heavy paper might do it. the adhesive would need to be
Protel 99SE track segments not continuous.
2004-11-30 by gettingalongwouldbenice
I m marching down another path to plot circuit boards directly on copper. The .020 pitch TQFP part with the .008 tracks is pushing the limits of the plotter
Teflon Toner Transfer
2004-11-30 by gettingalongwouldbenice
I finally got my hands on the sheet teflon. I posted a photo in the electrostatic page teflon.jpg. That s a TQFP64 SMT land pattern at 20 mil pin pitch. As you
Re: PCB Milling: gerber to gcode ?
2004-11-29 by crankorgan
Try KCam by Kellyware. It converts some gerber types to GCode.
PCB Milling: gerber to gcode ?
2004-11-29 by Kim Lux
I m new to the group, but not to making PC boards. I d like to try milling a few prototype boards. I have a CNC milling machine. I use Linux tools,
Re: Tile Saws WAS: PCB Shear
2004-11-29 by javaguy11111
I have been using a tile saw I bought at Lowes for cutting boards. It has worked quite well for me. You get a little bit of a burr from the copper but it is
Re: H200 Laminator
2004-11-27 by Phil
I m prtetty sure its the temp relative to the toner. I get excellent adhesion after 20 passes - poor adhesion at 15 - no adhesion at 10. contamination would
Re: Tile Saws WAS: PCB Shear
2004-11-27 by Dave Mucha
... many ... Thanks for finding those. It did seem odd, but interestingly, the word saw is not used for these wet blades. Also interesting is the price
Re: Tile Saws WAS: PCB Shear
2004-11-26 by Stephen Bartlett
A keyword search on the HF site for diamond tile blade turned up many different blades, 4 inch up through 14 inch. That s a cute little saw. Looks easier to
Registering Artwork to Drilled Holes
2004-11-26 by Earl T. Hackett, Jr.
I ll probably get both the diamond saw and the shear. So here s the next subject for discussion. I ll be building a small quantity of 3 x 5 boards. I ve