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2013-01-09 by Rick Sparber
Ms. Smilingcat, If you want to talk metalworking, that is my primary hobby (since electronics was lost as my hobby when I started to get paid to do it back in
2013-01-09 by smilingcat90254
Yes E-bay is cheaper. At Capefear, cost for 10 x 24 film is $59.00 with S/H I think it was. they have much smaller size for sampling but it is pretty pricy!!
2013-01-09 by Jeff Heiss
http://www.polymetaal.nl/siteUK/shopukwork/en-gb/dept_183.html The price is on the bottom of
2013-01-09 by Rick Sparber
Ms. Smilingcat, It looks like very interesting stuff. What bothers me is they said affordable price yet don t list the price. That usually means it ain t
2013-01-09 by smilingcat90254
Some of you have complained that the resist lifts off or gets damaged during handling. laying of the transparent image, static electricity causing the resist
2013-01-08 by Missouri Guy
Jeff, it s been awhile since I ve used the photo-resist method. (I prefer the iron-on toner because it involves virtually no chemicals.) If memory serves, the
2013-01-08 by Leon Heller
... Not necessary with the correct transparency material. Leon -- Leon Heller G1HSM
2013-01-08 by Leon Heller
... I get excellent results with a low-cost inkjet printer. I doubt if a much more expensive laser printer will be any better. Leon -- Leon Heller G1HSM
2013-01-08 by Boman33
I am very interested in this subject and I have on and off over the years done some testing but nothing recently. One absolute requirement: Single pass
2013-01-08 by Jeff Heiss
Is it better to have the light further away increasing sharpness and increasing the exposure time or closer to the board decreasing exposure time but reducing
2013-01-08 by Missouri Guy
I ve used TWO sheets of drafting paper (translucent, milky-white color) with the trace patterns aligned and facing down toward the PCB. Drafting paper allows
2013-01-08 by tda7000
I tried to find some of that darkener stuff in NZ but couldn t seem to. Tried the trick with the whiteboard marker instead, which seemed good. At least, the
2013-01-07 by cunningfellow
... I have used toner density enhancement spray (ebay Gcc toner density spray ) $40 is pretty expensive for a spray can full of solvent. It does kind of
2013-01-07 by AlienRelics
Photo inksets have UV blockers for the light cyan and light magenta, because they tend to fade quickly without them.
2013-01-07 by Russell Shaw
... I m using the normal black dye ink in an old Epson Stylus 400 printer. The real laser-raster UV printouts use a yellowish ink.
2013-01-07 by Russell Shaw
... Use an inkjet compatible with gelatin coated transparencies. The transparencies soak in the ink, and can be got from silk-screening suppliers. The ink
2013-01-07 by Kevin Byrne
I have LasarJet 4 600dpi. What can I do to improve in opaque except two copies. Is there a better way? Best Kevin ________________________________ From:
2013-01-07 by Hikmet
UV blocking ink is that a special ink or default inks will block uv s. I have epson l800 and it has dye based ink.
2013-01-07 by cunningfellow
... I agree with Steve on this. a $50 inkjet can do a fine job on proper trannies (if it has UV blocking ink) a $2000 laser printer can just compete on
2013-01-07 by AlienRelics
Did you mean not opaque enough ? Black is not the best color to use when using an inkjet for this. The lighter shades in a dye inkjet printer have additives
2013-01-07 by Boots Hughston
I use a Brother 550 LAZER printer, with Office Depot toner for toner transfers with HP presentation glossy paper. It works very well. Even for fine line
2013-01-07 by r.d. terramir
inkjets don t do a very good job on transparencies and the printout tend to be too opaque. there are methods around this like printing two copies and
2013-01-07 by Hikmet
I already have Epson L800 inkjet for home use. But i want to buy for our lab. And i think laser is more suitable for these ?
2013-01-07 by r.d. terramir
whatever you do don t go brother, even with generic toner it s a pita. Brother printers have problems with alot of things so stay away. High quality for toner
2013-01-07 by Leon Heller
... Why not an inkjet printer? Leon -- Leon Heller G1HSM
2013-01-07 by Hikmet
I m looking for a laser printer for photoresist pcb s. I want to expose minimal trace and clearance. Could you share your experience ? I think it would be
2013-01-07 by Harvey White
... I used furniture store vinyl, thin gauge, seemed to work just fine, calibrated exposure with the covering in place. Did not use saran wrap or the
2013-01-07 by Vicent Colomar Prats
I use four cheap fluorescent lamps (9W each, if I do not miss-remember) attached together with a diffuser cover and the time is between eight and nine minutes
2013-01-07 by Jeff Heiss
What are thoughts on exposure time vs. resolution? Pretend a 100w bulb gives a 10 minute exposure and a 200w bulb gives a 5 minute exposure. Is either
2013-01-07 by Boman33
Use thicker glass and let the PCB deform to lay flat against it. The force of the vacuum (air-pressure) is very large over the big area of the PCB. Bertho
2013-01-07 by Jeff Heiss
I experimented with a ziplock bag and a vacuum pump. The transparency is held to the board very very well. Much better than glass can ever do. However, I
2013-01-07 by Robin Whittle
Hi Vicent, Some of the eBay ads which can be found by searching for: 36W Nail UV Lamp Acrylic Gel Curing Light show that they contain four long U-shaped
2013-01-07 by Rick Sparber
Harvey, Makes sense. I always like self aligning procedures like this. Thanks! Rick ... From: Homebrew_PCBs@yahoogroups.com
2013-01-06 by Harvey White
... Take a small piece of aluminum and drill a hole in it the size of your expected hole (and drill bit). Put this a little under the board, far enough below
2013-01-06 by Rick Sparber
Baxter, Your insights are very helpful. I had the same problem with too much light washing out the beam and too little light not letting me see the area and
2013-01-06 by dave_donlan
Thanks for the replies guy very helpful Guess what i am going to get next Cheers
2013-01-06 by designer_craig
... I ordered on a while back to make an expousure box. The one I go has 4 U shaped 8W tubes (36W total). As is, it would do a 4x4 board. I figured I
2013-01-06 by Vicent Colomar Prats
Somebody told, some time ago, it was perfect for small pcbs. ... quite cheap might be worth a llok ... [Non-text portions of this message have been removed]
2013-01-05 by dave_donlan
Just been looking on flea bay and came across these 36W Nail UV Lamp Acrylic Gel Curing Light has anyone had any experience with these unit for producing pcbs
2013-01-05 by DB Express
http://fhu-lumar.pl/dkbhn.php?gbqi=gbqi [Non-text portions of this message have been removed]
2013-01-04 by Harvey White
... Three things generally keep toner transfer from working, wrong pressure, wrong temperature, and not very dense toner. You do have to play with it. I run
2013-01-04 by don@dlmparts.com
I have one of the HF Laminators also. Recently purchased a few months back. So I would like to hear more about its performance also. Its purpose is not to make
2013-01-04 by Dave
I had read about the use of the Harbor Freight 9 Laminator a while back. Has this turned out to be a success? What is the max thickness boards it will work
2013-01-04 by Donald H Locker
Thanks. works better. Donald. -- *Plain Text* email -- it s an accessibility issue () no proprietary attachments; no html mail
2013-01-04 by Rick Sparber
Don, I just received a package from Drill Bit City today. Bought five sizes with 10 drills of each size. They look good. Will try them in the next few days.
2013-01-04 by don@dlmparts.com
Get dirt cheap resharpend Tungston Carbide bits at... www.drillbitcity I alway also find a good selection of TC bits at a local Harbor Freight - These were end
2013-01-03 by bebx2000
Rick, I look down at the board at about 45deg in subdued room lighting. When the beam is hitting copper you don t see any thing. when it shines on etched areas
2013-01-03 by Missouri Guy
OK, thanks Baxter. On Thu, 03 Jan 2013 06:17:53 -0000 bebx2000 writes: Charlie, The pinhole tends to become obscure after a few holes,
2013-01-03 by Rick Sparber
Baxter, Thanks for the correction. The only difference in our approaches seems to be that yours works. I tried the high intensity LED yesterday and it was too
2013-01-03 by brane2
... No standard technical term, I think. I meant with it using constant spark of such strenght that its plasma vaporizes copper electrode - thin wire in PCB