Re: Through Hole microscope
2003-12-30 by wheedal99
... I ve tried using one of these for solder inspection some smt work (tqfp pads). It didn t have enough field depth to be much use for that. The bottom lens
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Re: [Homebrew_PCBs] Breaking drill bits
2003-12-30 by Adam Seychell
There has been many past discussions on drills and drilling , so search the archives at yahoogroups. From my own experience and what I ve heard from others is
Re: Two side alignment idea..
2003-12-30 by Ben H. Lanmon
... board ... maintaining ... things ... Well I would guess that you could do the press and peel for one side drill two or three of the thru holes for
Re: Breaking drill bits
2003-12-30 by Ben H. Lanmon
... bits. Any ... I use Carbide Drill Bits from Think & Tinker www.thinktnk.com Never used any resharpened bits before only new bits. Also use them in Dremel
Re: [Homebrew_PCBs] Breaking drill bits
2003-12-30 by JanRwl@AOL.COM
In a message dated 12/29/2003 7:19:07 PM Central Standard Time, javaguy11111@yahoo.com writes: My guess is that the dremel just has too much slop for these
RE: [Homebrew_PCBs] Layout considerations - BIG PADS!
2003-12-30 by Pedro Perez de Ayala Rull
Yes, I totally agree with you. This board had to be aligned with very special care for that reason, the small via size was an error(I learned that in the
Re: Two side alignment idea..
2003-12-30 by javaguy11111
I am trying to line up press and peel. I have done one two sided board just lining up and taping. That worked, but I am going to be doing much smaller holes
Breaking drill bits
2003-12-30 by javaguy11111
I just got a set of resharpened carbide bits in from drill city. I chuck one up into my dremel press. I snap the bit on the first hole. Thinking maybe I moved
Re: [Homebrew_PCBs] Through Hole microscope
2003-12-30 by Russell Shaw
... Another way is to saw the board near a hole with a fine saw, polish up the cross-sectional cut on a belt or disc sander, then use a conventional
Re: [Homebrew_PCBs] Through Hole microscope
2003-12-29 by Adam Seychell
Balan, are you a home brewer doing plated through hole ? Not many are going to this level so I was curious what your accomplishments are. The microscope you
Re: Through Hole microscope
2003-12-29 by Dave Mucha
Check out the Intel Qx3 digital microscope and it s competitor. These use your monitor as the display so you can keep looking up and still see the action.
Re: [Homebrew_PCBs] Through Hole microscope
2003-12-29 by DHC
Hi, If you want something really cheap then have a look at: http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=63-1133 I have an older
Re: Two side alignment idea..
2003-12-29 by Ben H. Lanmon
... The best way I know of is to do alignment holes in your patterns that match on both top and bottom then match these holes in the board then pin thru both
Re: [Homebrew_PCBs] Layout considerations - BIG PADS!
2003-12-29 by Stefan Trethan
... I too. It is worth the effort. I create/modify the footprints as i need them in a design. I still don t use/understand the technology files. I think i
Through Hole microscope
2003-12-29 by Balan
Hi I was looking for a through hole micro scope that can be used to examine the walls of a drilled hole after plating and also to examine the exposed rings in
Re: [Homebrew_PCBs] Layout considerations - BIG PADS!
2003-12-29 by Leon Heller
... From: Stefan Trethan To: Sent: Monday, December 29, 2003 12:02 PM Subject: [Homebrew_PCBs] Layout
[Homebrew_PCBs] Layout considerations - BIG PADS!
2003-12-29 by Stefan Trethan
Hi all. I just want to throw in (again) the following: If you make boards with no through hole plating YOU NEED BIGGER PADS. The layout software standard pads
RE: [Homebrew_PCBs] Re: Toner transfer
2003-12-29 by Pedro Perez de Ayala Rull
Ok, thanks Steve, I remembered there was some problems with the images but didn t know what it was exactly. I have created a folder named TT 8mil in the
Re: [Homebrew_PCBs] Re: How to cut circuit boards? small correction
2003-12-29 by Leon Heller
... From: mikezcnc To: Sent: Monday, December 29, 2003 11:20 AM Subject: [Homebrew_PCBs] Re: How to
Re: How to cut circuit boards? small correction
2003-12-29 by mikezcnc
Stefan, This is the cutter that feeds the board between two rollers and cuts it while feeding the board. Very unusual but works like a dream. Mike ...
Re: [Homebrew_PCBs] PCB Electroplating
2003-12-29 by Adam Seychell
Nickel is normally used as a barrier layer between copper and gold. Tin will only cause copper migration into the gold over time. Well that s what the experts
Two side alignment idea..
2003-12-29 by javaguy11111
I am wondering if there may be some way to use mirrors to view both sides of a circuit board at the same time as an aid to aligning circuit traces. I am
Re: Toner transfer
2003-12-29 by Steve
They re beautiful, but- no one but you and I, the moderator, can see the huge files you uploaded. The Photos section resizes everything down to 300x400, that
Re: [Homebrew_PCBs] PCB Electroplating
2003-12-29 by mpdickens
As far as I remember, You should be able to plate directly onto the copper. However, I think Adam Seyshell is more qualified than me to definitively answer
Re: Etchant recycling
2003-12-29 by dkesterline
Everyday Iron nails, polyethelene container, and the wires weren t in the solution. Trick is the coper was on the negative nail, and was just powdery sludge.
Toner transfer
2003-12-29 by Pedro Perez de Ayala Rull
Hi all, once again I m a little bit late... I posted a message some time ago, talking about my experience with toner transfer. I ll briefly say that I have
PCB Electroplating
2003-12-29 by Udara Dewamuni
Hi There, I am gonna gold plate my pcb. But i wanna know in which plating should i do before do the gold plating. I mean nickle plating or tin plating? What
Re: Etchant recycling
2003-12-28 by felixdkat2002
not sure what material your electrode needed to be made out of, but there are MANY different kinds of nails.... i would advise to find your source on the
Etchant recycling
2003-12-28 by dkesterline
Hello, I ve been experimenting with toner transfer for a while now, and I m starting to see acceptable results. This group has been a great help in my
Re: [Homebrew_PCBs] Re: How to cut circuit boards? small correction
2003-12-28 by Stefan Trethan
... Do you have a shear which slides down a blade simultaneously the whole length? or do you have shear which pivots the blade down? Or have i not read wrong
[Homebrew_PCBs] Two new Databases for Toner Transfer
2003-12-28 by Stefan Trethan
Hi! I have added two more databases for the Toner Transfer Method. One for Papers and one for
Re: [Homebrew_PCBs] Toner transfer works !!
2003-12-28 by Stefan Trethan
Hi! Great to hear you have good results too. I also abandoned the plotter method completely. The fuser: I have a fuser of a photocopier lying around for some
Re: Toner transfer works !!
2003-12-28 by mikezcnc
How many watts is that laminator and what was the size of board you tested the laminator with? Mike ... plotter. ... iron. ... I
Re: How to cut circuit boards? small correction
2003-12-28 by mikezcnc
The said shears cut wonderfully a regular fiberglass board. however, I just learned that a Radio Shack-type Prottype Board gets crack terribly. I learned it
Toner transfer works !!
2003-12-28 by Deepinder Singh
Hi All, Just wanted to drop a note of thanks for guiding me onto the toner transfer method. It is definitely better in resolution than my plotter. I did have a
Re: [Homebrew_PCBs] Bubbles (?) in photoresist
2003-12-27 by mpdickens
Here is how I prepare a board. All of the following is done while wearing rubber gloves: 1.) With a new, clean paper towel, scrub the board with Comet or Ajax.
Re: [Homebrew_PCBs] Bubbles (?) in photoresist
2003-12-27 by Stefan Trethan
You don t spray the resist on the still hot board from the cool oven and the very hot summer sun? (nice to tell me that while here i freeze off my ass if i go
Bubbles (?) in photoresist
2003-12-27 by Scott Gordon
Hi, I m trying to print my first ever PCBs, but I m having some problems with the photoresist producing small bubbles (or patches lacking in photoresist) which
Re: Absolutely!!! CNC driller how to...
2003-12-27 by Dave Mucha
Hi Guys, I started a group to get more detailed about this type of machine, but we really have not gotten a big start on discussing these.
Re: Absolutely!!!
2003-12-27 by mumin55555
im looking for a place with free instruccions. i cant buy the ones from the site you suggested since i dont live in america. ...
Re: Drilling before exposing, & how long is it photosensitive?
2003-12-27 by Ted Inoue
I found: expose, develop, drill, etch worked best for me. When I drilled after etching, I always seemed to screw up some pads. Undoubtedly I was using too low
Re: [Homebrew_PCBs] Drilling before exposing, & how long is it photosensitive?
2003-12-26 by Leon Heller
... From: sciciora To: Sent: Friday, December 26, 2003 7:53 PM Subject: [Homebrew_PCBs] Drilling before
Drilling before exposing, & how long is it photosensitive?
2003-12-26 by sciciora
I just tried drilling a PCB before exposing it, and it didn t seem like a better method. Spinning carbide drills at 30k rpm, the green photosensitive coating
Absolutely!!!
2003-12-26 by mikezcnc
It is called a CNC drill. Then you a drill file from th eschematic layout to control the machine. It works beautifully and your eyes stay straight.
Re: How to cut circuit boards?
2003-12-26 by mikezcnc
Stefan, You don t understand like I couldn t understand until a salesman showed me how the rollers work in a cutting funtion. It is amazing! Check post 3510
is it possible to built an automatic pcb drill???
2003-12-26 by mumin55555
is it possible to built an automatic pcb drill??? i am using a table drill (the one with the handle) and i was wondering- can i connect it to my computer so it
Re: [Homebrew_PCBs] Re: How to cut circuit boards?
2003-12-26 by Stefan Trethan
... Thanks. The Bungard shears were my only experience with bench shears. After using them my mind was made up never using a bench shear for pcb work again.
Re: How to cut circuit boards?
2003-12-26 by mikezcnc
Hi Stan, You are absolutely correct that Bungard is not the way to go IMO. http://www.covenantgroup.com.ph/covenant/bungard1.html I haven t tried Bungard but I
Re: [Homebrew_PCBs] horiziontal / vertical etching, how to make a sealing lid
2003-12-25 by Stefan Trethan
... You didn t have to clean my drills did you? ;-) NoNo, that must be sealed up! i forgot a open jar with my etchant (it is like you assumed) on a desk with
Re: [Homebrew_PCBs] horiziontal / vertical etching, how to make a sealing lid
2003-12-25 by Adam Seychell
... Can I ask why you decided that the lid must be air tight ? The only possible reason I can see why you may want an air tight seal is if your planning on