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 somehow angry about the restrictions given with milling.
i very like this article, it clearly says "hey, milling can be done but if you want go professional and
want to come somewhere near industry standard you simply have to do it wet"
i think it is really no, NO option for a modern pcb to produce it with milling.
this can only be done with simple designs, i don't know how you should make, lets say a smd board with
milling. but for sure it is a nice simple process for homebrew pcb or also maybe prototyping for
companies who make very simple pcbs.
"...old attempt to be different by someone who had a paranoia against chemical
>etching" for me this sound not like "hey the guys who sell mills are stupid, by our chemicals" but much
more "we really have tried it, it is much more easy to set up a wet process, even cheaper, and you can
get results with it which are out of comparison".
they also say the mills are great for other things (especially they are very proud of having this
motorized z axis... ;-) .
i have no idea how this paste performs but i too don't like the idea.
i only have seen one device with such a hole plating.
this was a old cd drive. in the holes it has "drops" of some grey material, looking like soldering paste
for smd but seems solid. this filled the hole fully up and had a little hill on each side to connect to
the tracks. i have no idea what was the reason but the cd-rom failed ..... this connections only have
been without pins in it.
regards
st
10.05.2003 20:34:25, Neil <
cobra_neil@...> wrote:
>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 slow, expensive, almost 30 years
>old attempt to be different by someone who had a paranoia against chemical
>etching".
>
>Whether true or false, it's opinionated and obviously written in a tone that
>screams desperation to not lose support for their products/methods. They
>also state things, but don't explain why.
>
>Yes, they're comparing PCB milling machines here and not specifically
>thru-hole activation, but I think that machines like LPKF would be great for
>other uses -- like they can engrave front panels for electronic projects,
>etc.
>
>As for thru-hole plating, whenever I solder a component lead in a plated hole,
>the solder always wicks itself thru the hole and over to the other side. For
>flexible wires, I purposely add more solder so it builds up on the opposite
>side, so I get a better mechanical hold. My guess is that even if there is
>resistance with the "conductive paste" method, the solder will fill the gaps
>and conduct properly. Of course, this is my thought/guess, as I've never
>done this before.
>
>I'm going to ignore that whole article as ∗desperate∗ marketing hype.
>
>-Neil.
>
>
>
>On Saturday 10 May 2003 11:53, Stefan Trethan scribbled:
>> 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
>>
>> 10.05.2003 18:30:02, Neil <cobra_neil@...> wrote:
>> >Here's one system/source for chemical thru-hole plating that I've had
>> > laying around in my bookmarks....
>> > http://www.thinktink.com/stack/volumes/volvi/condink.htm
>> >
>> >(I've never experimented with this though).
>> >
>> >Cheers,
>> >-Neil.
>> >
>> >On Friday 09 May 2003 19:29, JanRwl@... scribbled:
>> >> Markus!
>> >>
>> >> Please let us know what those "right chemicals" are, and how to apply
>> >> them! (Temperature? catalysts? time in bath? USW!)
>> >>
>> >> Then, what current (Strom, Amperes) per 0.1 m^2 to plate-through!
>> >>
>> >> But remember! The plating-through is done BEFORE etching!
>> >>
>> >> Thanks! Jan Rowland
>> >
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