Re: How to cut circuit boards?
2003-12-21 by roel_cnc
howdy, i use a wall-tile cutter with diamond disc and water resevoir works perfect and no dust at all
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Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by Stefan Trethan
If you compare the MicroMark Nibbler to the proxxon unit you will see that it looks completely the same. only the colors are different. Could well be out of
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by Alan King
Oh yeah thought of it before but almost forgot to mention power nibblers. No dust and no problems, really one of the best possible tools for the job.
Re: [Homebrew_PCBs] Re: How to cut circuit boards?
2003-12-21 by Stefan Trethan
On Sun, 21 Dec 2003 08:10:37 -0000, grantfair2001 ... PLEASE describe how you sharpen them by cutting up sandpaper! i never heard of
Re: [Homebrew_PCBs] PCB Coating
2003-12-21 by Stefan Trethan
On Sun, 21 Dec 2003 04:20:12 -0000, Udara Dewamuni ... I use colophony (resin of pine tree) likely what you have too. I solve it in laquer
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by Markus Zingg
... Sounds more like a belt version then. ... Well, I do not asume the cut s have to be smoth as a baby face :-) so, to me they are ok . I tried with carbide
Re: [Homebrew_PCBs] PCB Coating
2003-12-21 by Leon Heller
... From: Udara Dewamuni To: Sent: Sunday, December 21, 2003 4:20 AM Subject: [Homebrew_PCBs] PCB
Re: [Homebrew_PCBs] Re: How to cut circuit boards?
2003-12-21 by Russell Shaw
... Problem with snips is that they can warp the pcb (expecially thinner stuff), making film-in-light-box methods difficult.
Re: How to cut circuit boards?
2003-12-21 by grantfair2001
I use tinsnips. They work extremely well and leave a cleanly cut edge. You use then like scissors. Tin snip jaws have flat faces which move face-to-face. You
Problems with SuperPCB?
2003-12-21 by Scott T.
Is anyone having problems with SuperPCB? My parts keep mysteriously renumbering themselves and I can t find a switch to turn that feature off. My latest
PCB Coating
2003-12-21 by Udara Dewamuni
Hi there, Do anyone know a coating which i can apply over the PCB after the etching process. That coating must be protect the copper tracks by corrosions and
RE: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by Jan Kok
I just use a hacksaw (arm-powered!) with a fine-tooth metal-cutting blade. I can make a pretty straight cut (less that 1/32 inch or 1 mm deviation), cut
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by JanRwl@AOL.COM
In a message dated 12/20/2003 3:51:46 PM Central Standard Time, javaguy11111@yahoo.com writes: Any suggestions on cutting circuit boards. Glass-epoxy dulls a
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-21 by Alan King
... Almost everyone even remotely normal sees people in my range of brilliance as at least slightly crazy! ;) ... Not at all. It SEEMS that way until you ve
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Stefan Trethan
Alan, no offence, but has it ever appeared to you you might be a little crazy? ;-) Don t you think the automated feed is a bit of overkill....? Do you really
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Alan King
... Dremel, really requires the flex shaft to do it so the handle can be within the diameter of the cutoff disc. Use the THINNEST discs, they will break a bit
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Stefan Trethan
If it is the version with gears you should hear that quite distinctly. the gears are (were) louder than the motor on my saw. But i think since they use 220V
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Markus Zingg
Hi Stefan ... yes ... Well, mine is also not the strongest, but for the kind of boards I make it s sufficient. I bought fairly huge copper clad material from
Re: How to cut circuit boards?
2003-12-20 by Ben H. Lanmon
... but ... shears, ... have ... seems ... I use a Craftsman Table saw with Diamond blade, and vacumn attached, also put a cloth shop vac filter over the air
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Stefan Trethan
@markus: Do you have the 220V version? the saw i bought (at ebay for 30eur with carbide blade and two other blades ;-) ) is the old 12-18V version. The damn
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Stefan Trethan
a) The best quality cut i get with a circular/table saw. There are small units with 50 and 100mm blade diameter. The blade should be a carbide blade for Fiber
Re: [Homebrew_PCBs] How to cut circuit boards?
2003-12-20 by Markus Zingg
... I use the bench circular saw KS 115 from Proxxon with the diamond blade NO 28 012 with good sucess. This little saw is having an adaptor to connect a vacum
How to cut circuit boards?
2003-12-20 by javaguy11111
Any suggestions on cutting circuit boards. I have used a bandsaw, but it tends to be slow, dusty and inaccurate. I have tried paper shears, but the board tends
RE: [Homebrew_PCBs] Toner transfer problem
2003-12-20 by nuno-t
Thanks Leon and all, Has you all said, any kind of paint solvent, thinner or even acetone will do, I ve tested quite a few, just takes a little more or less
Re: Toner transfer problem
2003-12-20 by johnman_001
The two best solvents that I use to remove the toner from etched boards are: 1. Energine Spot Remover (A dry-cleaning fluid) and 2. Goof Off (A paint
Re: [Homebrew_PCBs] Toner transfer problem
2003-12-20 by Stefan Trethan
On Sat, 20 Dec 2003 07:05:16 -0800 (PST), pebo festus ... Or take a paper towel or old rag or something, make a corner wet with thinner and
Re: [Homebrew_PCBs] Toner transfer problem
2003-12-20 by pebo festus
laquer thinner works. just douse the board aand rub with a paint brush. ... __________________________________ Do you Yahoo!? New Yahoo! Photos - easier
Re: Printing pcb patterns negative or positive
2003-12-20 by Ben H. Lanmon
... will ... I would think that you want a negative to expose your screen which would be the trace pattern would be clear and all other areas dark just like a
Re: [Homebrew_PCBs] Re: Toner transfer problem
2003-12-20 by Stefan Trethan
The acetone i had evaporized out of the closed can. (tin can with plastic lid, it was sold in there so one should assume it stays in) Since that i try to
Re: Toner transfer problem
2003-12-20 by mycroft2152
... My solvent of choice is Acetone. I bought a quart at the local hardware store for a few dollars. Nail polish remover also works well. Myc
RE: [Homebrew_PCBs] Toner transfer problem
2003-12-20 by nuno-t
Thanks Leon, I also find out that any kind of paint solvent will do, just takes a little more or less time and rubbing to clean it all. No damage to the
Re: [Homebrew_PCBs] Toner transfer problem
2003-12-20 by Leon Heller
... From: nuno-t To: Homebrew PCB s group Sent: Saturday, December 20, 2003 10:29 AM Subject:
Toner transfer problem
2003-12-20 by nuno-t
Hi everyone, I ve started making PCB s using the toner transfer method. The results are quite good but I have a problem: How can I remove the toner from the
Re: Another material information URL
2003-12-20 by Steve
Thanks, Stefan, for making a folder and posting that and some other similar links. A reminder to everyone: check the Links and Files areas occassionally if you
[Homebrew_PCBs] Another material information URL
2003-12-19 by Stefan Trethan
Hi Just wanted to drop here if anyone is looking for material data. There are the standard things listed (density, conductivity etc.)
Re: New member
2003-12-17 by alienrelics@yahoo.com
... No one answered, so I ll jump in. Look in the Links and Files sections of the list, there is tons of info there. Take a look through the archives, too.
Re: Screen printing
2003-12-17 by grant.fair@sympatico.ca
So you can imagine how bright I feel! I think I got confused long ago by PCB s in Audio Amateur and the way they named them. Grant
Re: Printing pcb patterns negative or positive
2003-12-17 by grant.fair@sympatico.ca
Search in this list on silk screen . Tom (twb8899) has extensive knowledge and he posted some sources in the US over a year back. I am in Toronto, and I
Re: [Homebrew_PCBs] Re: Milling PCB's - how to line up both sides?
2003-12-16 by Alan King
... Actually it is only a few lines of code to translate points through rotation, even without using sine/cosine trig, and any milling software that doesn t
Re: Milling PCB's - how to line up both sides?
2003-12-16 by dave_mucha@yahoo.com
My T-Tech has the hole and slot. when I sell it and get my home unit running, I plan on making multiple locations so as to spread out the wear on the machine.
Re: Screen printing
2003-12-16 by alienrelics@yahoo.com
... .... I feel like a dope. I went back to the start of the thread and re-read it, saw that the original poster -did- have it backwards with respect to
Screen printing
2003-12-16 by twb8899@yahoo.com
The negative-positive issue seems confusing at times but here s how it works. Screen printing requires that the image being printed must be opened up or
Re: [Homebrew_PCBs] Re: Milling PCB's - how to line up both sides?
2003-12-16 by Tony Harris
Wow! Thanks for the detailed response (was actually beginning to wonder if I was the only one milling lol). I ll have to figure out a way to convert that to
Re: Milling PCB's - how to line up both sides?
2003-12-16 by ballendo@yahoo.com
Tony, Commercial PCB mills (LPKF,T-Tech,etc) use two 1/8 dowel pins to locate the board on the mill. T-tech uses a 1/8 hole and 1/8 wide slot, while LPKF uses
Re: [Homebrew_PCBs] Re: Printing pcb patterns negative or positive
2003-12-16 by JChavez@soboce.com
... Where can I get negative acting screen printing emulsions ? TIA, Javier.
Re: Printing pcb patterns negative or positive
2003-12-16 by Steve
... Which doesn t make sense. What -you- said makes sense. Use a negative image with negative resist. Steve
Re: [Homebrew_PCBs] Re: Printing pcb patterns negative or positive
2003-12-16 by Alan King
... Exactly. But black areas ... Again exactly. This isn t making sense ... If black areas are where the copper is, but instead you need black areas over what
Re: Printing pcb patterns negative or positive
2003-12-16 by Steve
... I m really confused. Black areas are where copper is. But black areas over the emulsion result in it washing away. This isn t making sense to me. Steve
Re: Printing pcb patterns negative or positive
2003-12-16 by grantfair2001
Tom - Many thanks, again. Grant
Re: Printing pcb patterns negative or positive
2003-12-15 by twb8899
... Grant, Most screen printing emulsions are negative acting. Expose them using a postive image of your circuit board where opaque black is the copper and