NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: 4-digit Circular Sliderules
From: Hanno Ix
Date: 2015 Apr 21, 07:56 -0700
for some reason, not at all for the red one.
Or, not consistently for the red one.
I got some red lines looking fine, straight and saturated
and many other ones faint and fuzzy - even though
I came to believe the chemistry of the red SHARPIEs
was changed when they came out with the colored versions.
Which is exactly what we did at HP when we developed the printer inks.
From: Hanno Ix
Date: 2015 Apr 21, 07:56 -0700
Robert,
thanks for the note. Well, I did what you said. The material is 42 mil thick.
This method works superbly for the black line but, for some reason, not at all for the red one.
And, believe me, I tried a few ways of scoring,
scribing, drying, rubbing, etc.
I took detailed notes of the modifications I did trying to
repeat carefully the ones that came out right.
This is an existence proof good red lines can be made
but, boy, how?
This is an existence proof good red lines can be made
but, boy, how?
I came to believe the chemistry of the red SHARPIEs
Which is exactly what we did at HP when we developed the printer inks.
Regards
H
On Tue, Apr 21, 2015 at 5:16 AM, Robert VanderPol II <NoReply_RobertVanderPolII@fer3.com> wrote:
For the cursor, how thick is the material? If it is thick enough, for the cursor lines what you could do is use a knife and straight-edge to score the backside of the material, mark over the score with a Sharpie and rub that marking back out with your fingers. The ink in the scored groove gets left behind leaving a very fine line.
