Re: [Homebrew_PCBs] Newbie questions
2007-04-11 by DJ Delorie
Assuming you want to use the laser printer (and not an inkjet or other print/etch technologies), there seem to be two basic techniques. First, toner transfer.
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Re: printer limitations or etch undercut
2007-04-11 by Andrew
... I don t think yor undercut has to be any wider than Adams photo shows his jaggies for it to be marginal at 6 thou does it ? Those jaggies in the
Re: printer limitations or etch undercut
2007-04-11 by derekhawkins
... No more so than over-exposure or over-development IMO. I actually use undercut to get rid of the inkjet jaggies; Artwork with jaggies;
Re: printer limitations or etch undercut
2007-04-11 by Andrew
... WOW - the dot scattering in the perpendicular direction is dramatic. Are there options in the printer driver to slow down the speed the head traverses the
printer limitations or etch undercut
2007-04-11 by Adam Seychell
... What is your etching technique ? What is your foil thickness ? Ok, you got me curious. Now you ve made me waste the past 3 hours of my time determining if
Re: who does SMD ?
2007-04-11 by Andrew
... These are not up to Dereks photographic standards but here is a close up of a board recently made. http://www.thehacktory.com/88Wide.jpg
Re: who does SMD ?
2007-04-11 by Andrew
... Derek, I can print and etch much smaller than 8/8 in a small area of PCB but uneven etching kills me. The laser print-out and the resist on the copper
Re: who does SMD ?
2007-04-11 by Andrew
... Adam, I thought you already had 2 versions of it up and runnig. Are you doing a 3rd itteration ?
Newbie questions
2007-04-10 by jusdebra
I m a Marine Biologist that needs a non fishy hobby. I ve always been interested in electronics and I ve been reading and experimenting for a few months. I m
Re: HP PCL programming language?
2007-04-10 by scratch_6057
... If ... printers ... that ... has ... printed ... using a ... control ... worth ... If anyone wants to investigate the postscript options Don Lancaster s
Re: [Homebrew_PCBs] HP PCL programming language?
2007-04-10 by Richard Holbert
... Postscript might be easier to work with. Rick
Re: HP PCL programming language?
2007-04-10 by docstein99
I have found the PCL language reference attached with old printer manuals. I have seen them on the internet before, probably in the HP 7445 or 7550 plotter
HP PCL programming language?
2007-04-10 by lcdpublishing
Hi guys, I am working on another idea - still pretty rough at the moment. If things are the same as they were years back, all HP laser printers using their
Re: who does SMD ?
2007-04-10 by derekhawkins
... No surprises there, transferred toner is actually a poor resist in comparison to resist that was developed properly. And when you say looked ok , what
Re: [Homebrew_PCBs] Re: who does SMD ?
2007-04-10 by DJ Delorie
... Ok, I did a test print and compared it to the same print a few days ago. Frankly, I can t tell the difference, even under a 200x scope.
Re: [Homebrew_PCBs] Re: Clean Pulsar TTS after etching?
2007-04-10 by Stefan Trethan
On Tue, 10 Apr 2007 15:57:17 +0200, d1camero ... Add alcohols: no. What works great for me is mechanical scraping. Just use another
Re: [Homebrew_PCBs] Re: who does SMD ?
2007-04-10 by Stefan Trethan
... I m not actually sure about that. I ve transferred finer lines with TT that looked ok, but they disappeared completely during etching. I do not know what
Re: who does SMD ?
2007-04-10 by derekhawkins
... 8/8 rules on a reliable basis should be easy with the crudest of etching setups provided you can see the process and not just depend on a timer. Etching
Re: Clean Pulsar TTS after etching?
2007-04-10 by d1camero
Thanks for the tips guys. Did a little experimenting and found this info as well: acetone - yes laquer thinner - yes, but stinky mineral spirits - no varsol -
Re: Clean Pulsar TTS after etching?
2007-04-10 by James Liddle
Lacquer thinner also works well. Jim ... Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel
Re: [Homebrew_PCBs] who does SMD ?
2007-04-10 by Adam Seychell
... Its good to know people are not finding it a problem making PCBs for SMD. When I said 8mils, I meant to say thats size while still being very reliable. I
Re: [Homebrew_PCBs] Clean Pulsar TTS after etching?
2007-04-10 by Leon
... From: DJ Delorie To: Sent: Tuesday, April 10, 2007 4:22 AM Subject: Re: [Homebrew_PCBs] Clean Pulsar TTS
Re: [Homebrew_PCBs] Re: who does SMD ?
2007-04-10 by Leon
... From: Andrew To: Sent: Tuesday, April 10, 2007 2:27 AM Subject: [Homebrew_PCBs] Re: who does
Re: [Homebrew_PCBs] who does SMD ?
2007-04-10 by Leon
... From: Adam Seychell To: Sent: Monday, April 09, 2007 11:34 PM Subject: [Homebrew_PCBs] who does
Re: [Homebrew_PCBs] Re: who does SMD ?
2007-04-10 by DJ Delorie
... In my case, variations in etch are due to two primary factors: 1. Mapping the pattern onto discrete toner dots sometimes results in slightly wider traces,
Re: [Homebrew_PCBs] Clean Pulsar TTS after etching?
2007-04-10 by DJ Delorie
... I use a solvent called Goof Off which contains xylene. It takes off toner, the TR foil, pretty much anything but the copper itself. However, read the
Re: who does SMD ?
2007-04-10 by derekhawkins
... Still guessing after all these years? (Apologies to Paul Simon).
Clean Pulsar TTS after etching?
2007-04-10 by d1camero
Anyone have any tips for cleaning off the Pulsar TTS stuff after the board is etched? thanks Don
Re: who does SMD ?
2007-04-10 by Andrew
... I do pretty much the same as you do except I use a large colour laser printer instead of the inkjet. Routinely get 8/8 thou across a large board
Re: who does SMD ?
2007-04-10 by derekhawkins
... It shouldn t be with photo either. And best case photo will always look better than best case TT.
Re: who does SMD ?
2007-04-10 by derekhawkins
... That should be walk in the park. At least with a $100 Epson and Epson s transparencies it is. Here s 6/6 rules in a worst case scenario;
Re: [Homebrew_PCBs] who does SMD ?
2007-04-09 by DJ Delorie
... I normally use 0603 and SSOP/TSSOP sizes, with either SOT-23 or SOT-323 depending on power need. I ve done down to 01005 (8x16 mil) and VSSOP (0.4mm pitch)
Re: [Homebrew_PCBs] who does SMD ?
2007-04-09 by Stefan Trethan
On Tue, 10 Apr 2007 00:34:34 +0200, Adam Seychell ... 8 mil is no problem with toner transfer, but my printer won t go much below that (6 mil maybe). I usually
who does SMD ?
2007-04-09 by Adam Seychell
I m wondering what other people are doing out there for PCB that use SMD. I finding over the years my PCBs need smaller and smaller tracks to suit the ever
Re: Dremel drill w/press
2007-04-09 by crankorgan
I just used a Foredom foot controller with an old Dremel and a newer MultiPro. Both are very choppy and only work when the footpeddle is all the way down. Add
Re: Dremel drill w/press
2007-04-09 by izzo47
Ok, then mine(Dremel Drill) is maybe 12-15 yrs old and the foot pedal is even older. I guess I just got lucky. ... this. ... you ... hole ... drill
Re: Dremel drill w/press
2007-04-09 by crankorgan
A Dremel MultiPro has a speed control built in. It will not run off some speed control units unless you put a small lightbulb across the Dremel. Older Dremel
Dremel drill w/press
2007-04-09 by izzo47
If you want to make your drill a real varible speed drill try this. Get you hand on a table model sewing machine foot padel. This way you can bring the drill
rx580 non-modifications
2007-04-07 by rmustakos
I just finished the electronics for a chorded keyboard, using strip board, which kind of spills out of the keyboard housing. Using kicad I designed a pcb that
Re: 880 Modifications
2007-04-07 by docstein99
Some pictures and documentary on the progress (if anyone is interested) can be found here: http://www.raidgear.net/rnd_inkjet.aspx
880 Modifications
2007-04-06 by docstein99
Ok here s my experience so far on modding out an Epson 880, in case anyone was interested (and couldnt find a c84 or c88 for $15) ... Scanned all the local
Re: [Homebrew_PCBs] solder mask?
2007-04-05 by Stefan Trethan
On Thu, 05 Apr 2007 01:57:06 +0200, d1camero ... You can also paint it with a solution of colophony resin (electronics flux) in
Re: solder mask?
2007-04-05 by d1camero
Thanks for the correct understanding of the soldermask and for all the great suggestions. I like the testor idea, sounds nice and simple. Don
Re: [Homebrew_PCBs] solder mask?
2007-04-05 by JanRwl@AOL.COM
In a message dated 4/4/2007 6:58:22 P.M. Central Daylight Time, a8723@cameronsoftware.com writes: I am wondering what people use to coat the copper traces to
Re: [Homebrew_PCBs] solder mask?
2007-04-05 by Leon
... From: d1camero To: Sent: Thursday, April 05, 2007 12:57 AM Subject: [Homebrew_PCBs] solder
Re: [Homebrew_PCBs] solder mask?
2007-04-05 by Richard Holbert
... Testors 1601 candy apple green spray enamel. http://www.diyaudio.com/forums/showthread/t-58229.html
Re: [Homebrew_PCBs] solder mask?
2007-04-05 by Ken Carlson
... I think what you want is to tin the copper not soldermask it. You can get a tin plating solutition that you dip the board in and it will plate the copper
solder mask?
2007-04-04 by d1camero
Hi guys, I am wondering what people use to coat the copper traces to prevent corrosion. Is there something that can be soldered after it is coated? I am sure
Re: [Homebrew_PCBs] Re: Best method for 2oz copper on 1/16" boards?
2007-04-04 by Jumy Cai
2oz is good,but I wanna know the PCB layers you layout? I mean you must consider the thermal derating in the preparation of your design. ... From: Roland
Re: [Homebrew_PCBs] Re: Best method for 2oz copper on 1/16" boards?
2007-04-03 by Roland Harriston
There are accountable reasons why PC boards heat up. Usually it is because the designer did not take into consideration how much current various traces on the