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2012-02-04 by John Anhalt
All of my small carbide bits for PCB work have 1/8 shanks. John ... From: Branko Badrljica To: Homebrew_PCBs@yahoogroups.com Sent: Friday, February 03, 2012
2012-02-03 by Harvey White
... Since you re dealing with PC boards, I d use the carbide bits that are available. You need only a 1/8 collet. They must be used with a drill press, the
2012-02-03 by Steve
Hi all, A couple of weeks ago I inquired about small drill presses for PCB work. I m kinda leaning toward the Proxxon 38128. Looks like the drill press comes
2012-02-03 by freespamfree
I apologize if I am hijacking this post but it is in relation to toner transfer paper. How do you send your paper through the laser printer? I have a Brother
2012-02-03 by Piers Goodhew
I dabbled with magazine paper, while it worked fine, the extra overhead of cutting it out and lining that bit up on an a4 sheet was much higher than using an
2012-02-03 by Donald H Locker
The print on the magazine pages is an oxygen curing ink that doesn t melt when heated. The toner from the laser printer is a pigmented plastic material that
2012-02-03 by bigbazinga
Looked up the product number on the package and, actually, I use HP CG988A, Presentation Paper, 32lb. Works perfectly every time down to 5 mil. traces.
2012-02-03 by Paul Mateer
you are correct...to much heat and pressure and the ink from the paper transfers as well! ... -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com
2012-02-03 by bigbazinga
Me, too. I will never use anything else. Fantastic stuff. I used to use glossy magazine covers, but even with the same magazine there was way too much
2012-02-03 by Kaelin Colclasure
Greetings, I would like to pull together a representative collection of example Gerber files to use for testing an app I m developing for the Mac. I ve done a
2012-02-03 by Harvey White
... The ink soaks into the paper. The toner stays on top and bonds to the paper s surface. You soften the toner with the laminator, it gets sticky and glues
2012-02-03 by Banibrata Dutta
... indeed. the reason is magazine, or most form of bulk printing use dyes, which are soaked-up by paper and work by staining the cellulose. laser toner OTOH
2012-02-03 by David
Dave, The toner used in laser printers is a form of plastic, if you get a paper jam in your printer and have to remove the paper before it has passed through
2012-02-03 by Spencer W
Sports illustrated magazine works fantastic. That is what I use. Sent from my iPhone ... [Non-text portions of this message have been removed]
2012-02-03 by Leon Heller
... When I tried magazine paper it worked OK. The print didn t make any difference. Leon -- Leon Heller G1HSM
2012-02-03 by dave_donlan
Cheers for the replies I do struggle with the concept of magazine paper as it is already printed on and my mind says it will come off onto the board so glossy
2012-02-03 by bebx2000
For toner transfer, I have had good luck with HP Laser Presentation Paper, Glossy, 34lb, 95 Brightness, Q2546A. Baxter
2012-02-03 by DJ Delorie
IMHO, the qualities that make paper useful for TT are either: 1. They have a water-soluble coating on them, or 2. They are glossy so the toner just doesn t
2012-02-02 by David
... Dave, I have used glossy magazine pages, the poorer the quality paper the better!! The free catalogue type [thin]that comes in the post gives me the best
2012-02-02 by dave_donlan
Hi all I have read conflicting types of paper to use for the laser toner transfer method 1 Photo glossy for laser printer 2 as above but for inkjet 3 matt for
2012-01-31 by Terry Gray
Look at Walmart in the drain cleaner section. ... [Non-text portions of this message have been removed]
2012-01-31 by Kerry Wentworth
Sulfuric acid should be available at (most) any auto supply store. I got some at Autozone a while back, for anodizing aluminum. Kerry
2012-01-31 by Bob Butcher
Sulfuric acid is battery acid, and should be readily available. I even purchased some from a pool supply store once for use in reducing pH in swimming pools.
2012-01-31 by John
Before you get too wrapped into the plating process it would be a good idea to check out the availability of the supplies. Acquiring a small quantity of
2012-01-31 by Robert
Hi all, ... DeForest (McGraw-Hill, 1975) I was able to find 5 used copies of this title at abebook.com for about $1.00 each and shipping about $3.00 or $4.00
2012-01-31 by Jeff Heiss
Where is the video located where he uses the white ink? Is the white ink conductive? Jeff ... He just repeat the same ink filling process (and surface
2012-01-30 by bebx2000
Hi Jeff, If you are not having any luck with Elmers s glue, try casein (see patent 4237210). Elmer s glue by the way, is an emulsion of PVA/PVac. The most
2012-01-30 by MIKE DURKIN
Let it dry? Shouldn t you just figure out what one ounce dried out weighs then calc out how much one ounce dry weighs when wet...? Then add to the adjusted
2012-01-30 by Charles Patton
A few bits of anecdotal experience and personal observations about photo resists (mostly from experiences 40 years ago.) 1) I always thought of photo resists
2012-01-30 by Jeff Heiss
Hi Baxter, I am trying the recipe of ammonium dichromate mixed with Elmers glue and I am finding two things. First, the Elmers glue does not dissolve in water
2012-01-30 by bebx2000
Hi Jeff, The book I cited really didn t give any recipes. The reference to shellac was in a chapter devoted to the historical development of resists. Later
2012-01-30 by Simao Cardoso
... Here he shows how he does it. Watch around 2m30s http://www.youtube.com/watch?v=bD9imNIkTKM
2012-01-29 by Simao Cardoso
... He just repeat the same ink filling process (and surface scrubbing) with is acrylic ink. There was another video with it, the ink was white (no graphite in
2012-01-29 by psykhon@yahoo.com
This is what i do, you just do it once and as long as nothing change, you hardly need to repeat.
2012-01-29 by Malcolm
I found a Youtube video of plating through holes using home made solution and kit, does not answer the question as to how to protect the copper in the holes
2012-01-29 by Jeff
Hi Baxter, I was wondering if I could ask you a few details about your comment from the Photoresist book on ammonium dichromate and shellac. Does the book
2012-01-29 by Donald H Locker
Many years ago, when I was doing my own photography using wet chemistry, I simply made a test exposure using an opaque card to expose the paper in steps. This
2012-01-28 by Rich Osman
Rich Osman; POB 93167; Southlake, TX 76092 ... Mostly because I m using unmarked used stuff AND because I want to get a better idea how uniform illumination
2012-01-28 by Dave Sage
Lots of high tech ideas flying around here but if you really NEED to know why not just go on the website for the maker of the lamp and look it up OR ask them
2012-01-28 by Ray
... I have used the FL15BL tubes for over 20 years in a homemade wooden box that uses 4 bulbs in a 16 inch wide space. I have a homemade exposure frame
2012-01-28 by bebx2000
Yes, I have etched holes in the pads. I am very happy with my Proxxon tools and also buy from DrillBitCity/drillcity (the Harbor Freight carbide bits are OK
2012-01-28 by Jan Kok
I assume you have holes etched in the pads, yes? Otherwise, how do you locate the center of the pads? I ve got a Proxxon rotary tool and drill stand. It works
2012-01-28 by Harvey White
... Been there and done that. The drill press that I have has some wobble side to side, and the dremel tool has a significant runout. The Proxxon has a lot
2012-01-28 by Harvey White
... I m working on an upside down drill press, using a TV camera as a viewpoint, with an engraved graticule to show where the center of the hole is. The
2012-01-27 by Tom
Please watch this youtube video if you are interested in UV light sources. I have a Youtube video on the Overview of the Kinsten PCB UV Exposure Box
2012-01-27 by Tom
I highly recommend the Dremel 220-01 Rotary Tool Work Station you can see me drilling with it (I also have a vacuum nozzle close to the drill) in this
2012-01-27 by bebx2000
I also use this setup.I mounted a thin project box to the table with a laser pointer, a mirror at 45 deg and a pinhole inside to illuminate the bottom of the
2012-01-27 by bebx2000
What you want is a UV radiometer or UV light meter. The measurement is usually mw/cm*2. The required exposure of the photoresist is usually given in
2012-01-27 by Per Mattsson
Thanks everyone for ideas and replies! /Per ... Per Mattsson - per@permattsson.se - 0706524567 [Non-text portions of this message have been removed]
2012-01-27 by Per Mattsson
Very good- thanks! ... Per Mattsson - per@permattsson.se - 0706524567 [Non-text portions of this message have been removed]