Homebrew PCBs

I reckon you need not blow it.
take a glass tube and locally heat it in gas.
then pull. the more you pull the thinner.
the hollow core ill still be there.

ST

On Tue, 27 Apr 2004 04:18:17 -0000, grantfair2001 
<grant.fair@...> wrote:

> Hi Vasile-
>
> I've never blown glass but have seen it done.
>
> What did the glass pen look like when it was done? How did it write
> the ink? Did it have a "nib", or a ball, or what?
>
> Grant
>
> --- In Homebrew_PCBs@yahoogroups.com, Vasile Surducan <vasile@s...> 
> wrote:
>>
>>
>> Maybe it sounds crazy for your ears, but in the comunist era we have
> used
>> for XY plotters a home made glass pen, very similar with the Staedler or
>> Rotring pens, and the result was quite amazing, the same resolution as a
>> 0.5 standard pen. You need just a bunsen gas burner, a vial and two
> right
>> hands to pull the glass.
>> The key for continuous traces was keeping down the pen (on the printed
>> surface) as much as possible.
>>
>> best regards,
>> Vasile
>> http://sudrucan.netfirms.com
>
>
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