Dave -
   For info...I got a all from Nina at PW yesterday about the ladder.  =
Apparently some group is moving into the bowl and wanted the ladder, or =
something.  Anyway, as soon as Jeremy got home we zipped over to the =
garage and got the big orange ladder, which I assume is the right one, =
and delivered it to the bowl.  Had to leave it outside leaning against =
the wall.  Nina knew I didn't have a key and said to just drop it off.  =
I assume it survived the night.  Maybe I'll swing by sometime today to =
see who is moving in and make sure the ladder is OK.
Wayne
  ----- Original Message -----=20
  From: ChrisAtUpw@..........
  To: psn-l@.................
  Sent: Friday, September 26, 2003 9:54 AM
  Subject: Re: Portacorder RV-320


  In a message dated 26/09/2003 , ivey@.......... writes:


    Also, I seem to have the smoked-paper version, does anyone know how =
horrible that=20
    is to work with, and where might I get some appropriate paper (for =
relatively low $)?
    Thanks,
    Jack


  Hi there Jack,

         We regularly use smoked paper for barographs in gliding. We =
solder a 1/4" copper tube about 3" long into the steel lid of a glass =
jar - something like a honey jar. We feed a wick through this and half =
fill the jar with paraffin. The wick projects maybe 1/2" from the top of =
the tube. Adjust to get a suitable size of flame. We find somewhere with =
still air which doesn't matter getting smoked and light up. We mount =
good quality typing paper tight on the drum and rotate it in the smoke =
several inches above the flame. The close thermal contact with the drum =
prevents it from burning. When it is suitably black all over, we use it.

         When it has recorded all that we want, we VERY CAREFULLY take =
the sheet of paper off the drum without jarring it and then spray THE =
WHITE BACK SIDE OF THE PAPER with HAIR LACQUER. This penetrates through =
the paper and fixes the trace. When it is ~dry, we give the black front =
of the trace another coat of lacquer. If you try spraying the black =
carbon side first, you blow most of the carbon off, which defeats the =
object and makes a mess. It is not difficult to do and gives an =
extremely fine trace.

         Have fun!

         Chris Chapman=20







Dave -
   For info...I got a all =
from Nina at PW=20
yesterday about the ladder.  Apparently some group is moving into =
the bowl=20
and wanted the ladder, or something.  Anyway, as soon as Jeremy got =
home we=20
zipped over to the garage and got the big orange ladder, which I assume =
is the=20
right one, and delivered it to the bowl.  Had to leave it outside =
leaning=20
against the wall.  Nina knew I didn't have a key and said to just =
drop it=20
off.  I assume it survived the night.  Maybe I'll swing by =
sometime=20
today to see who is moving in and make sure the ladder is =
OK.
Wayne

  
----- Original Message ----- 
  From:=20
  ChrisAtUpw@....... 
  
To: psn-l@.............. 
  
Sent: Friday, September 26, =
2003 9:54=20
  AM
  
Subject: Re: Portacorder =
RV-320
  

In a message dated 26/09/2003 , ivey@.......... writes:


  Also, I seem to have the smoked-paper version, does =
anyone know=20
    how horrible that 
is to work with, and where might I get some =
appropriate=20
    paper (for relatively low $)?
Thanks,
Jack

Hi =
there=20
  Jack,

       We regularly use =
smoked=20
  paper for barographs in gliding. We solder a 1/4" copper tube about 3" =
long=20
  into the steel lid of a glass jar - something like a honey jar. We =
feed a wick=20
  through this and half fill the jar with paraffin. The wick projects =
maybe 1/2"=20
  from the top of the tube. Adjust to get a suitable size of flame. We =
find=20
  somewhere with still air which doesn't matter getting smoked and light =
up. We=20
  mount good quality typing paper tight on the drum and rotate it in the =
smoke=20
  several inches above the flame. The close thermal contact with the =
drum=20
  prevents it from burning. When it is suitably black all over, we use=20
  it.

       When it has recorded =
all that=20
  we want, we VERY CAREFULLY take the sheet of paper off the drum =
without=20
  jarring it and then spray THE WHITE BACK SIDE OF THE PAPER with HAIR =
LACQUER.=20
  This penetrates through the paper and fixes the trace. When it is =
~dry, we=20
  give the black front of the trace another coat of lacquer. If you try =
spraying=20
  the black carbon side first, you blow most of the carbon off, which =
defeats=20
  the object and makes a mess. It is not difficult to do and gives an =
extremely=20
  fine trace.

       Have=20
  fun!

       Chris Chapman=20