Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: Fluids for Bubble Sextants and Sealing Methods
    From: Robert Swartz
    Date: 2015 Dec 28, 14:37 -0800

    Bill;

    I appreciate your insights. However, I beg to differ with you on filling A-12 bubble chambers with alcohol which is hygroscopic and can cause corrosion or discoloration in the bubble chamber interior.

    Also you cannot seal w/ shellac as alcohol dissolves shellac.

    When working w/ old radium paint--better put a luminescent coating on top rather than trying to dissolve the old paint in acetone and repainting. Remember this is nasty stuff and creates disposal 

    issues.

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    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