Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: 4-digit Circular Sliderules
    From: Hanno Ix
    Date: 2015 Apr 21, 07:56 -0700

    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.
    Or, not consistently for the red one.
    And, believe me, I tried a few ways of scoring,
    scribing, drying, rubbing, etc.

    I got some red lines looking fine, straight and saturated
    and many other ones faint and fuzzy - even though
    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?

    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.


    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.  

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site