Re: Copper Foils
2008-12-19 by drpain1313
LaserPCBs are copper foil epoxied to a heat-resistant backing and a pressure sensitive adhesive. www.laserpcb.com ... some?
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Re: [Homebrew_PCBs] Copper Foils
2008-12-19 by William Alford
... you can get it at various handicraft stores like, Hobby Lobby, and such . sometimes in the leaded glass section. they also usually have in it in adhesive
Re: [Homebrew_PCBs] Copper Foils
2008-12-19 by leon Heller
... From: trevwhite74 To: Sent: Friday, December 19, 2008 12:53 PM Subject: [Homebrew_PCBs]
Copper Foils
2008-12-19 by trevwhite74
I am currently trying to see if I can find some copper foil that I could adhere to other materials such as glass. I am wondering how difficult it would be to
Re: who's applying photoresist film ?
2008-12-19 by trevwhite74
... I believe you still need to cure the Dry Film. I am trying to dig out the datasheet but I think once developed the boards needs 60mins in the
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-19 by Adam Seychell
... My LPISM looked a bit viscous to roll on with a disposable roller. The ProMask kit is a little out of reach at US$650.00 :) I m thinking it might be easier
Reindeer hooves!
2008-12-19 by Jim Miller
Under the tree is about 10lbs of ~1mm 1oz double sided boards and another package with 11lbs of sodium persulfate. No bundle of switches this year! A safe and
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-18 by Markus Zingg
Bungard only sells one soldermask laminate, so calling them and asking for a price / ordering should do. The nice thing is that they sell rolls of 25m only
Re: who's applying photoresist film ?
2008-12-18 by trevwhite74
... I do not think their prices are great but bit of a niche market I suppose. I checked out a normal cheap laminator from Maplin that I picked up for £10 a
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-18 by Adam Seychell
... The 780 H Series LPI solder mask its made by http://www.eternal.com.tw Data sheet (not available online) states 350~450mJ/cm^2 exposure energy. Comparing
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-18 by Adam Seychell
... thanks for the link. The prices are kind of on the high side. Their £2625 dryfilm laminator was a bit off putting. I couldn t see liquid solder masks on
Re: who's applying photoresist film ?
2008-12-18 by jcarlosmor
Since Vacrel is a dry film soldermask it gives a professional look, but several two-part liquid photoimageable soldermask are also very good. ¿what kind or
Re: who's applying photoresist film ?
2008-12-18 by trevwhite74
Hi, I have just ordered some dry film solder mask from the following link. I think I remember talking to a rep who said this stuff is pretty good. I shall
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-18 by Adam Seychell
... Does the finished result look professional ? I bought some of that green liquid photoimageable solder mask but its a 2 part system and must be applied by a
Re: who's applying photoresist film ?
2008-12-18 by jcarlosmor
I am using Vacrel soldermask from DuPont. Do you have a reference or part number regarding the soldermask from Bungard that you use? Thanks.
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-17 by Markus Zingg
Huh? The soldermask resist I have is much thicker than the one I use for etching and as a result VERY easy to apply. Unfortunately I don t know exactly what it
Re: who's applying photoresist film ?
2008-12-17 by jcarlosmor
I think that your wet method will be very valuable for soldermask, which is harder to adhere and process without bubbles or wrinkles than photoresist. In fact,
Re: [Homebrew_PCBs] who's applying photoresist film ?
2008-12-17 by Markus Zingg
I do, but I never tried the wet method cause doing it the dry way works just fine as long as I use a sheet of paper between the film and PCB while feeding
Re: [Homebrew_PCBs] Re: who's applying photoresist film ?
2008-12-17 by Adam Seychell
... Yea it can be a bit labour intensive as DJ mentioned. The water can make it a bit of a mess too. Originally I was applying it cold and heating after it
Re: [Homebrew_PCBs] Re: How do you Drill Them?
2008-12-17 by René Eskesen
Hi Marko Please share the info on how to build you re CNC. some assembly drawings would be nice best regard Rene 2008/12/17 Marko Pavlin ...
Re: How do you Drill Them?
2008-12-17 by Marko Pavlin
Hi! I am using old drill/mill tools from local PCB manufacturer. They waste tools, which may be used for hobby for long time. I buld CNC machine and use kress
Re: who's applying photoresist film ?
2008-12-17 by jcarlosmor
I am using a medium size office laminator without any problems. The film adheres so well, so I beleive that the correct temperature is the key for success. I
Re: [Homebrew_PCBs] who's applying photoresist film ?
2008-12-17 by DJ Delorie
... I am, but if I can get the laminator hacked, I may switch from wet to dry. I ll have to try and see which is more reliable. I did a solder paste screen
who's applying photoresist film ?
2008-12-17 by Adam Seychell
I m curious how many people here are applying their own dry film photoresists. I ve stumbled upon a method that seems to work half reasonably. Rather that
Re: How do you Drill Them?
2008-12-16 by Ben
I use the Dermel tool and Dermel drill press. Theres others too Dermel is not the only one around. I have drilled many a thousands of holes from .7mm to 2mm.
Re: How do you Drill Them?
2008-12-14 by billshat44
I too use the Dremel tool with the Dremel Drill Press. I have had very good luck and have drilled a lot of holes with the same bit. There is 3 piece chuck set
RES: [Homebrew_PCBs] dry film photoresist
2008-12-14 by Alexandre Guimarães
Hi, Adam. I am usually against thank you emails to lists but in this case I felt like I need to make an exception to this rule ! THANK YOU !! Fantastic job
Re: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-14 by Adam Seychell
... It works fine. Like Russell said, the liquid must dampen resonances because I ve never seen any burning or arcing of any sort on the copper that is
Re: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-13 by leon Heller
Leon Heller Amateur radio call-sign G1HSM Yaesu FT-817ND transceiver Suzuki SV1000S motorcycle leon355@btinternet.com http://www.geocities.com/leon_heller ...
Re: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-13 by leon Heller
... From: Jim Miller To: Sent: Saturday, December 13, 2008 2:09 AM Subject: [Homebrew_PCBs] Potentially
dry film photoresist
2008-12-13 by Adam Seychell
Hi all, I just thought with the recent discussion on dry film photoresists, I figured some people might be interested in applying it with hot water instead of
RE: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-13 by Hugh Weinrich
A good test of this theory would be a blank cd in a (glass) pan of water. Normally, CD s aluminum layer will melt within 5 seconds in an active microwave. I
Re: [Homebrew_PCBs] Re: Potentially stupid or brilliant idea
2008-12-13 by Russell Shaw
... Leave on full for 1 minute or less, so that it s hot but not boiling. ... No. As long as there s 2-3mm of liquid over the pcb, any resonances in the copper
Re: Potentially stupid or brilliant idea
2008-12-13 by Brian
... results. ... water? ... primary ... copper. ... I prefer to heat my solution and then etch. It seems to keep warm enough to etch a board. The etchent can
Re: Potentially stupid or brilliant idea
2008-12-13 by Carl W. Livingston
... results. ... water? ... primary ... copper. ... That is an interesting concept. I usually use a Pyrex tray on the Propane fired stove. I like my
Re: Potentially stupid or brilliant idea
2008-12-13 by mdgolfbum
Any particular power setting or just on full? How long do you have it in for? Any particular issues with how much copper is left on the board, i.e. is there a
Re: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-13 by David Griffith
... I think the problem is that metal in the microwave serves as a reflector. -- David Griffith dgriffi@cs.csubak.edu A: Because it fouls the order in which
Re: [Homebrew_PCBs] Potentially stupid or brilliant idea
2008-12-13 by Russell Shaw
... I usually strip the resist off a pcb while it s in 5mm of NaOH in a flat tray, and the tray is in the microwave.
Potentially stupid or brilliant idea
2008-12-13 by Jim Miller
I know that placing metal in a microwave can produce interesting results. However is there any experience with a piece of copper in a cup of water? I m
Re: hacking a laminator
2008-12-11 by bob_ledoux
I have the GBC 9 inch laminator. It isn t hot enough for toner transfer so I just run the sandwich through multiple times. That s a lot less work than
Re: How do you Drill Them?
2008-12-11 by Gary Fiber
I have a couple of Dremel drill presses, the old one where the table raised to the bit and the new one that lowers the Dremel tool into the work piece. I asked
Re: How do you Drill Them?
2008-12-11 by pgdion1
Hi Jerry, I had the same experience as you. I m an EE and do a lot of 1-off s and proto-typing. Many years ago I tried Toner Transfer with special paper and
Re: [Homebrew_PCBs] Re: hacking a laminator
2008-12-11 by DJ Delorie
... The 9 has a simple temperature-sensitive switch, probably a bi-metal type. I looked up the part number at one point, but I don t remember what the
Re: hacking a laminator
2008-12-11 by Chris Horne
My GBC 330 laminator has an analogue controller with a temperature adjust pot on the back. The max temp was a bit low for toner transfer, so I checked inside,
Re: [Homebrew_PCBs] Re: hacking a laminator
2008-12-11 by DJ Delorie
... It does. My current problem is that it s *too* hot for photofilm - I end up destroying the film instead of laminating it. I need to cool it down a
Re: [Homebrew_PCBs] How do you Drill Them?
2008-12-11 by John Honniball
... I use a Black and Becker hand-held mini-drill. Photo here: http://www.flickr.com/photos/anachrocomputer/2840023402 I use both 1.0mm and 0.8mm drills,
Re: [Homebrew_PCBs] Re: hacking a laminator
2008-12-10 by DJ Delorie
... Ok, I ll add a zero crossing detector ;-)
Re: [Homebrew_PCBs] How do you Drill Them?
2008-12-10 by James Bishop
I recently bought a cheap ryobi bench-top drill press - it costs about $110AU which is about $70US. Its made in china, nothing special. It comes with a
Re: hacking a laminator
2008-12-10 by Carl W. Livingston
I ve read many of the responses to this initial post, but decided to reply to this first post to address what I see as something that needs to be looked into -
Re: hacking a laminator
2008-12-10 by Andrew
... Detect the Zero crossing and then trigger an SCR/Triac a proprtional amount beind the zero crossing. This option is only suitable for small resistive