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2013-11-26 by <andrewm1973@...>
Keith, I can t actually read your message apart from the first two lines. This new Yahoo interface is awesome. Anyways QFN/DFN packages are the new _EASY_
2013-11-26 by James Sleeman
... The stuff bonds to most plastic including printable transparencies in my experience, maybe you struck it lucky with the type you tried :)
2013-11-26 by James Sleeman
The first exposure is long enough that the areas you want to stay on are somewhat hard, take it out, remove the artwork, wash off the uncured pads, then
2013-11-26 by Slavko Kocjancic
When you expose board with mask the ink harden. But if mask isn t full black (the laser print isn t full black) then there is practice to not expose too long
2013-11-26 by <twgray2007@...>
You can find the stuff on EBay, UV Curable Solder Mask, but you won t find any more information than that you see here. The Chinese shops sell it but don t
2013-11-26 by Paul Alciatore
I have not heard of this soldermask and am puzzled. You expose it the first time with the artwork and then expose it again for a lot longer time without the
2013-11-26 by <beefyzee@...>
Thanks for pointing that out. I had to Google QFN, that went straight over my head LOL. Hopefully I ll get by with the resolution for quite some time. I ve
2013-11-25 by James
Soldermask UV cured ink is available on eBay in various colours either in 10cc syringes or 100g pots. In theory, you coat the board, cover with plastic, expose
2013-11-25 by <andrewm1973@...>
Keith, One thing I did notice about the Epson 3000 is that it only has a resolution of 720 DPI. https://www.epson.com.au/products/inkjet/stylusC3000_specs.asp
2013-11-25 by <beefyzee@...>
Thanks for that Steve, I never realised about a built in bulk ink system, I d better look at the manual to learn more. Well there may be a little catch after
2013-11-24 by <andrewm1973@...>
Bugger, If I wasn t a whole day of driving to get to Melbourne I would grab the other one. ... Hi It depends what your paying for it, I personally wouldn t
2013-11-24 by AlienRelics
Realigning Epson heads requires a bit of factory-only software (possibly available online, let s not talk about that here) and is a real pain. I have rescued a
2013-11-24 by <beefyzee@...>
Thanks Dave, I agree about non-functional inkjets being just about a throw out item. Thing with this particular model of printer is it seems to get good
2013-11-24 by <beefyzee@...>
Thanks Russell, I am in the Melbourne area actually, but if I couldn t get the printers to work I d pull all the motors, etc out of them to put towards a
2013-11-24 by David Pickering
Hi It depends what your paying for it, I personally wouldn t give anything for it, just tell them your willing to take it off there hands to save them dumping
2013-11-24 by Russell Shaw
... The ink is not solvent ink, so there s a chance of unblocking by pulling out the head (not too hard with some practice, but a teaser at first, maybe see
2013-11-23 by <beefyzee@...>
I ve got a chance at an old Epson Stylus Color 3000 (not the R3000). This is a big A2 printer. I ve been told the print heads are blocked. The printer has been
2013-11-21 by <leeleduc@...>
Does anyone have any experience with this printer? Is it suitable for toner transfer? Thank you.
2013-11-20 by Ameer Khan
Dear James and other members, Thank u very much for the quick response and information, especially the link to the seller of the dry film sheet in India.
2013-11-20 by James
Hi Ameer,Dry Film Photoresist is available on eBay
2013-11-19 by Ameer Khan
Dear friend, I have been making PCB for my prototypes and test projects using Laser print & heat transfer method. I was able to make PCBs using this method
2013-11-19 by Boman33
I understand about lost power. In my example the beam was round to start with but I had to filter out secondary beams to provide an as clean beam as possible
2013-11-19 by Slavko Kocjancic
... Doesn t matter. If beam is 1x3mm and I need 1x1mm with this method I lost 2/3 of power. It s only masking unwanted portition. And expanding and companding
2013-11-19 by Boman33
Note, my example had nothing to do with obtaining a small spot for developing artwork or PCBs. It is a common method for obtaining a clean laser beam
2013-11-19 by Cristian
... Your solution is the same as with an expander: the pin hole has to be of 0.06mm diameter (the smallest beam dimension) and you will loose the same amount
2013-11-19 by James
Sure thing, I ll send some to your Halladale Rd address.
2013-11-19 by Geoff Wood
... http://www.youtube.com/watch?v=2GoCNKzhWVs#t2m20s ... Have decided that I have been unable to get a reliable consistant heat/time over the board area with
2013-11-19 by James
Fran Blanche has this video where she uses press-n-peel to good effect: http://www.youtube.com/watch?v=2GoCNKzhWVs#t2m20s she uses a proper heat press but a
2013-11-18 by <n0tt1@...>
Hi Geoff, (You asked if anyone had used Glossy Photo paper for toner transfer.) I tried the glossy photo paper after a member of this list strongly recommened
2013-11-18 by Geoff Wood
Hi folks, New here. I m Geoff from New Zealand. Have been doing PCBs on and off for maybe 35 years, first by resist-pen, then Bishop Graphics and Riston. After
2013-11-18 by AlienRelics
Speaking of the Links section.... We have a section called Commercial_PCB_Prototypers, I see no one has added any links for quite a while. Hint, hint.
2013-11-18 by AlienRelics
The problem was not that it was an ad. As list owner, I -welcome- vendors joining. They are welcome to post an ad once a month, to post a link in the Links
2013-11-18 by Boman33
I have been down the same road using the pads and tape and camera generated artwork. I think you are closer to a solution than you realize. Inkjets with good
2013-11-18 by <beefyzee@...>
Hi Epa, I m a beginner to this but recently made my first perfect PCB using the UV method. Tried the toner transfer several times and I want nothing to do with
2013-11-18 by Mark Lerman
More info here . Seems
2013-11-18 by Stefan Trethan
How many PCB manufacturers do you suppose there are? How many suppliers for items related to making PCBs? If the list owner says no commercials, that s that.
2013-11-18 by James Sleeman
... [...] UV exposure is the closest method to what you used. The only difference is the way in which you generate the artwork. For me, a single tracing
2013-11-18 by <palciatore@...>
A recent thread that was a thinly disguised ad has brought back to my mind the basic reason why I joined this group and several others. I have been mostly
2013-11-18 by Boman33
Interesting thought: If the laser focal point is not needed to very short, the required mirror curvature is very slight. It would be easy to bend a plastic
2013-11-18 by Cristian
... Expander-round aperture-focusing is the easy way for an amateur. ... Curved mirror will do the job, but I think is hard to find. If you know a cheap one
2013-11-18 by Boman33
I do not think you want to use an aperture to get a round beam since it will waste power. As you suggested, cylindrical lenses will allow you to selectively
2013-11-18 by Slavko Kocjancic
... Actualy I don t know what aproach is better. Both seems to work, and both have specific problems. I know that I can make laser beam round with aperture in
2013-11-18 by Cristian
... To get the beam round you have to expand it with a lens, to pass the expanded beam through a round aperture and to re-focus it. Of course, you will lose a
2013-11-18 by AlienRelics
... Baked at 600 to 900F, the binder is supposed to evaporate and leave only metal. Of course, I think it would require a glass or ceramic substrate, FR4 won t
2013-11-18 by Harvey White
... I use two passes, generally results in 100% transfer. However, I ve had runs where the foil absolutely does not adhere, period. That can mess up a board.
2013-11-18 by <rtw@...>
I use 3 or 4 times and works good. With laminator heated up good. I wait about 20 minutes to heat up before I do it. ... Just tried using the green foil -
2013-11-18 by <w6nim@...>
Just tried using the green foil - first try (one pass thru laminator) didn t transfer much. 8-10 passes gave 100% transfer, but broadened the traces. Is
2013-11-17 by <andrewm1973@...>
Wow - that IS high current. It can even light up a green LED. ... or, for high currents:
2013-11-17 by <eslavko@...>
Hello.... After long time I got time and stuff to check thing about this topic. I had some liquid photoresist (similar to positiv 20) produced localy. I smear
2013-11-17 by Cristian
... or, for high currents: http://www.3dprinterworld.com/article/metal-printing-desktop-mini-metal-maker Cristian