RE: [Homebrew_PCBs] Metalized holes
2003-05-11 by Nuno-T
Hi, I’ve seen these pins, but they are not hollow. They are good to use in ‘vias ’ (holes without components) What about the holes that have to hold
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Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-11 by Mike Putnam
Neil, you are 100% right. If the solder is wicking to the other side, you do not have a problem with resistance from the process used for plating. The solder
Re: [Homebrew_PCBs] Smallest trace?
2003-05-10 by Mike Putnam
I have gotten professional results at 7 mil with photo etch. I have not tried smaller as I have never had the need. -Mike ... From: Neil
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Markus Zingg
Ok, I definately will create a little page and post the link then. Markus
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Markus Zingg
... This is - in priciple - the same thing as using a wire and solder it on both ends. The only difference is that those pins remain better in the holes and
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Stefan Trethan
no, i have understood this very different. they actually produce and sell their own milling machines as you might have read. i think these guys are simply
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Neil
I have to laugh! They start of by saying Please consider the following as an open minded statement that... , then later state ...isolation milling is a
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Cristian
... I own the Bungard s original press.There is no need to buy the full press. One handy man can buy only the two parts (see Neil s mail) of the active head
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Ned Konz
... What about the snap-off pins that you press into the hole by hand and then snap off and solder? -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Stefan Trethan
hmm the guys from bungard don t like this. they say it has too high resistance. http://www.bungard.com/downloads/ANTI_E.PDF somewhere in there... regards st
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Neil
Here s one system/source for chemical thru-hole plating that I ve had laying around in my bookmarks....
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Markus Zingg
... Again, as soon as I m ready (my wife aparently had some different plans for this weekend so I m not sure if I can finish it this weekend) I will post a
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Stefan Trethan
yes they are expensive. but this is not a solution for making boards with hundreds of plated through holes. i think you may also use only one size to start
Re: [Homebrew_PCBs] Smallest trace?
2003-05-10 by Leon Heller
... I think it is mostly a function of the artwork quality, and the collimation used on the UV exposure. Using transparencies made on an old LaserJet IIIp I
Smallest trace?
2003-05-10 by Neil
Curious ... how small a trace width can you reliably get with your home-etching system? I ve been doing most things at 15-20mil so far, but wondering if I
Re: SPAM: Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Neil
Thanks for the sources Stefan. The only one here in the US is LPKF, and they are quite expensive -- if I wanted to experiment with say 3 different sizes (most
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Stefan Trethan
here are the urls for the rivets: http://www.bungard.com/seiten/p-favorit.htm lpkf has them (or a other brand)
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Stefan Trethan
i have seen them also. (neil s) these cylinders look like pop rivets, but thinner wall (and of course no shaft). you simply apply them by tining one side of
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Cristian
I m interested. Cristian
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by JanRwl@AOL.COM
In a message dated 5/9/2003 6:39:23 PM Central Standard Time, m.zingg@nct.ch ... Markus! Please let us know what those right chemicals are, and how to apply
Re: [Homebrew_PCBs] Metalized holes
2003-05-10 by Neil
There is one other method I ve heard of, which is to use small eyelets that look like little open cylinders with flanged ends. There is a special tool
Re: [Homebrew_PCBs] Metalized holes
2003-05-09 by Markus Zingg
How this is done depends on a number of factors. The easiest way is to just put some wire through the holes and solder it on the top and bottom layer. Aside of
Metalized holes
2003-05-09 by Nuno-T
Hi everyone, I’m new here, I’ve been working with PCB’s for a while and now I want to start making my own boards for a great number of reasons. I found
Re: [Homebrew_PCBs] what's the best tool for etching pcb's
2003-05-09 by Mike Putnam
Carbide will last a lot longer and give you better results (definition). It is more expensive than tool steel, but in the long run, it will be less expensive
Re: [Homebrew_PCBs] Dental turbine milling and Scratch 'N Etch
2003-05-08 by Stefan Trethan
the scratch and etch is a very nice idea. knows anyone how i may obtain a plotter file (hpgl1) which contains the information needed to plot the outline of a
Dental turbine milling and Scratch 'N Etch
2003-05-08 by Steve
... -snip- ... catalogs, but ... have on ... catalogs of ... have ... Don t forget to check the Links section of the list, and if you have a good supplier
Re: what's the best tool for etching pcb's
2003-05-08 by twb8899
Bob, We always used diamond cut fishtail router bits for profiling boards on Excellon Automation CNC routers. Almost every job was routed using .093
Re: [Homebrew_PCBs] what's the best tool for etching pcb's
2003-05-07 by JanRwl@AOL.COM
In a message dated 5/7/2003 6:36:46 AM Central Standard Time, ... Bob: I have been reading mail from latest-received, on, so I just got to your good question:
Re: what's the best tool for etching pcb's
2003-05-07 by grantfair2001
Hi Bob- I am not an expert on this, and I have no direct experience. I do know that John Kleinbauer, who designs and sells plans for home built CNC machines
what's the best tool for etching pcb's
2003-05-07 by spoothammer
Hi, I hope I m not re-asking a worn out question... but here goes. What is the best tool to use to route printed circuit boards on an NC mill? I have a
Re: [Homebrew_PCBs] PCB design software
2003-05-07 by Markus Zingg
Check out autotrax. Pretty powerfull and - belive it or not - completely free! http://www.autotraxeda.com/ Note, I don t know the package in detail cause I
Re: First pcb etched with CuCl
2003-05-07 by grantfair2001
One of the variables affecting etch time in CuCl is etchant temperature. However, you have to be careful not to melt or soften your etchant tank. And, the
Re: [Homebrew_PCBs] PCB design software
2003-05-07 by Neil
Check out Eagle at http://www.cadsoft.de . The freebie version is limited to something like 4 x 4 (or thereabouts) and 2 layers, but is very fully capable
Re: [Homebrew_PCBs] PCB design software
2003-05-07 by Leon Heller
... Easy-PC is very good, I used it for years: http://www.numberone.com I now use Pulsonix which is a professional product from the same company:
Re: [Homebrew_PCBs] PCB design software
2003-05-07 by Mike Putnam
Monte, CadSoft has a free version of their Eagle PCB program available at their website http://www.cadsoft.de/freeware.htm This will allow you to make
PCB design software
2003-05-07 by MM
Hello to all... New member here and not real knowledgeable regarding PCBs but am hoping to learn. If you guys can stand a few neophyte type questions for a
Re: [Homebrew_PCBs] First pcb etched with CuCl
2003-05-07 by Mike Putnam
Even the Ferric Chloride etchant will etch unevenly and take some time in cold etchant. Is CuCl the same? I have always heated the Ferric but am wondering if
Re: [Homebrew_PCBs] First pcb etched with CuCl
2003-05-06 by Francisco Peña
I have experienced uneven etching using CuCl too. I etch my boards horizontally facing up, and the etching happens from the edge to the center of the board,
an idea for air in etchant
2003-05-06 by luth_strd
I was thinking that it might be possible to arrange a several turn spiral of flexible tubing submerged about 90 percent ( a slow spiral ramp) slide a smaller
Re: [Homebrew_PCBs] First pcb etched with CuCl
2003-05-05 by adam Seychell
Thanks for the update. What you describe about the gray film on the copper surface during etching is very important discovery. The film is copper(I) chloride
First pcb etched with CuCl
2003-05-05 by grantfair2001
Even though my tank of etchant is far from the deep green color which shows it is at an optimum, I decided to etch a small board tonight. I hung it in the
Re: [Homebrew_PCBs] Re: mushy airstone
2003-05-05 by Adam Seychell
That URL shows some good stuff on air sparging . The porous hose is probably just fine for the job. As you say, the ceramic blocks (fine bubble version) are
Re: mushy airstone
2003-05-04 by grantfair2001
It looks like the Sweetwater air diffusers might be best for the job, in that they last forever in an acidic environment, according to the manufacturer. There
Re: [Homebrew_PCBs] Re: mushy airstone
2003-05-02 by Adam Seychell
I once tried pin holes in PVC tube, but the bubbles always come out big compared to air stones. I think they air needs to pass through all those small cavities
Re: mushy airstone
2003-05-02 by grantfair2001
Yip, that s the one. I asked the clerk what it was made of but she didn t have a clue (or seem likely to get one anytimew soon, either). I thought I would just
Re: [Homebrew_PCBs] mushy airstone
2003-05-02 by Adam Seychell
... Damn, well there goes that idea out the window. Was this the one you got ? http://www.quickgrow.com/images_shop/aqua_fizz_12.gif I spent some time looking
whish is best ?
2003-05-02 by luis_emilio2
hi agin i like to knows whish is best to etchant pcb regards muale
temperatura control
2003-05-02 by luis_emilio2
hi my english is no good i use fuser fron one laser printer to tranfer pcb layout to blank pcb use regular papel and coater papel it work bery good and fine i
mushy airstone
2003-05-01 by grantfair2001
After about 24 hours, the 12 airstone is mushy to the touch and is not putting out much in the way of bubbles, so I took it out. It was a Hagen brand, a
Re: CuCl etchant is progressing
2003-05-01 by grantfair2001
I was thinking of getting bromophenol blue and methyl orange. What do you recomend? Shipping tends to be expensive so I thought I would try to get everything I