Hi Brett,

Yes, those are the epoxy type needles  I was talking about.  But I was 
trying to figure out cheap, local sources for Kareem to experiment 
with.  Small Parts has neat stuff, but the requirement to buy $25 of one 
needle size is painful, especially if you're trying to figure what size 
you really need.  Too big, and the ink will drain out on the paper -- 
too small and it clogs too easily.

Nobody's answered my initial question.  Has anybody ever seen a 
non-pressurized ink system using Teflon tubing for the feed line (unless 
it's very fat tubing where the non-wetting properties won't break up the 
ink thread)?  But I got the impression the application intends to use  
very fine flexible capillary tubing to aid in control of the ink flow 
and I can't imagine using Teflon for that.

Regards,
Charles R. Patton

The problem for Kareem On 8/4/2011 3:18 PM, Brett Nordgren wrote:
> Charles,
>
> See:  http://www.smallparts.com/b/318120011/ref=sp_iss_318120011
>
> Brett
>
>
>
> At 12:24 PM 8/4/2011, you wrote:
>> 
>>
>> For needles two sources I can think of are:
>>   1) Your friendly doctor.  I think that it may be illegal to own a 
>> needle in the United States, so you may not be able to go this route.
>>  2)  A lot of epoxy applications use a syringe to apply.  Usually the 
>> tip is a plastic part that screws on (half-turn).  But metal needles 
>> are also available.  They just aren't sharpened like an injection 
>> needle.
>> Instead they are cut off square.  This would be nice because it also 
>> gives you method of removing the needle and refilling your "syringe 
>> ink cartridge" with the simple pull of the plunger.  So check with 
>> your local plastics/epoxy supply company.
>>
>> Regards,
>> Charles R. Patton
>
>
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