[GreenKeys] platen refurbishing ?

[John Nagle]

> ?From: On Behalf Of Keith Lueck 
> Subject: [GreenKeys] platen refurbishing ?
> 
> I'm having the platen on my M15 re-covered.? It was rock hard, and
> the type bars were perforating the paper, even when I backed the
> typing force adjustment as much as possible.? The guy doing the
> restoration says that the platen currently measures a 100 Shore-A,
> which is the same as "modern" (lol) Selectric typewriters.? He says
> older typewriters used a 90 Shore-A material, but claims that the
> softer material could allow perforation of the paper and ribbon,
> which is exactly the problem I'm having now...?
> 
> Does anyone have an opinion on this??
> 
> I'll keep you all apprised of how this works out...? His prices seem
> pretty reasonable.?

   I had trouble with ribbon perforation, but turning down the
typing force was enough to solve the problem.  Let us know
how this "platen refurbishing" works out.

   Modern nylon ribbons are less resistant to perforation than
the original cotton ribbons.  Also, some electric typewriters
were designed to have a lower striking force on small characters
like "-" and ".".  Teletypes don't have that mechanism.

				John Nagle