From: George Bush 
To: psnlist 
Sent: Tue, 2 Aug 2011 16:21
Subject: RE: Ink for paper recording system...


I presently do not have a source. I am using tubing from old=20
trip-chart recorders I have.
If anyone on the PSNlist knows of a source of small, flexible,=20
lastic tubing, please let Kareem and I know.
Thanks- George
> >I use Scheaffer Skrip fountain pen ink. I find that the ink seems to be
 >self dissolving in that normal flow will keep the pen clean and clear.
 >If I forget to change the paper and the ink flow is reduced and starts
 >to clog, when the ink is flowing onto the paper again, it seems to
 >open-up the flow on it's own.
Hi George,
    You can buy it off a tubing / plastics supplier, but maybe not in small=
=20
quantities. Find your size and then as for a sample, please? Electrical=20
Adhesive Heatshrink is available which shrinks down to 1mm. Also 1/16" and=
=20
1/8" tube with a 3:1 shrink ratio. Solid core cable with PVC insulation is=
=20
available with 0.5 mm ID upwards. You cut a bit over the length that you=20
want and strip the ends. Then you put one wire end in a vice and pull the=
=20
other end with pliers to stretch the wire, maybe by 20%. This shrinks the=
=20
copper and you can then pull the wire out easily. You can get larger=20
diameter wires.=20
    I can buy 2mm silicone rubber insulating sheathing for wires. I can als=
o=20
buy wires with silicone rubber sleeving.
.
     Hope that this helps,
    Regards,=20
    Chris




















=
From: George Bush <ke6pxp@.......>

To: psnlist <psnlist@..............>

Sent: Tue, 2 Aug 2011 16:21

Subject: RE: Ink for paper recording system...





I presently do not have a source. I am using tubing from old=20
strip-chart recorders I have.

If anyone on the PSNlist knows of a source of small, flexible,=20
plastic tubing, please let Kareem and I know.

Thanks- George

> >I use Scheaffer Skrip fountain pen ink. I find that the ink seems =
to be
> >self dissolving in that normal flow will keep the pen clean and cl=
ear.
> >If I forget to change the paper and the ink flow is reduced and st=
arts
> >to clog, when the ink is flowing onto the paper again, it seems to
> >open-up the flow on it's own.
Hi Georg=
e,
    Yo=
u can buy it off a tubing / plastics supplier, but maybe not in small 
quantities. F=
ind your size and then as for a sample, please? Electrical 
Adhesive Heatshrink is available which shrinks down to 1mm. Also 1/16" and 
1/8" tube with a 3:1 shrink ratio. Solid core cable with PVC insulation is 
available with 0.5 mm ID upwards. You cut a bit over=
 the length that you 
want and strip the ends. Then you put one wire end in a vice and pull the 
other end with pliers to stretch the wire, maybe by 20%. This shrinks the 
copper and you can then pull the wire out easily. Y=
ou can get larger 
diameter wires. 
=
    I can buy 2mm <=
/TT>silicone rubber insul=
ating sheathing for wires. I can also 
buy wires with silicone rubber sleeving.
=
.
     Hope that =
this helps,
    Re=
gards, 
    Chris<=
/FONT>