[GreenKeys] Teletype Model 33 Platen Restoration

[David Tumey]

They did not share the entire process with me, but explained that they first remove the old rubber material, then create a new surface on a mandrel cut to the same diameter as the '33 platen.  Next, using pressurized air, they transfer the surface to the '33 platen - apparently no adhesive material is used, so it is easy to repeat the process again if needed.  Finally, the platen is "ground" to the OEM specified O.D.
The job was VERY professional - i.e., looks like a NOS part.
--dave
      From: drlegendre . <drlegendre at gmail.com>
 To: epvgk at limpoc.com 
Cc: David Tumey <davetumey at yahoo.com>; GREENKEYS BULLETIN BOARD <greenkeys at mailman.qth.net> 
 Sent: Saturday, September 26, 2015 5:43 PM
 Subject: Re: [GreenKeys] Teletype Model 33 Platen Restoration
   
So what's the basic refurbishing technique for a platen or roller? Is it similar to retreading a tire, where the rubber is wound on in a thin sheet, after which the piece is placed in a heated mold to vulcanize & cure, followed up by whatever grinding / trimming / finishing is required.
On Sat, Sep 26, 2015 at 3:19 PM, Eric <epvgk at limpoc.com> wrote:

I'd like to have my model 19's platen done, but I'm not sure I want to take disassembly and reassembly...

Eric

On September 26, 2015 12:43:19 PM PDT, David Tumey <davetumey at yahoo.com> wrote:
>Keys,
>I had a platen restored recently by J.J. Short Associates in NY as
>recommended by Cory Heisterkamp (hat tip).  Just wanted to share the
>results, contact information and pricing.
>The company did a phenomenal job on the restoration, the platen came
>back looking like brand new.  I installed it into the '369 machine
>today and ran it for a couple hours.  Print quality, tracking,
>alignment, drift, tractor force, all excellent!  The left margin held
>to within 1/32" over 400 printed lines.  Line spacing is perfect as
>well.  Cory was right, these guys are a great resource and enjoyable to
>work with.
>It took about 7 days to do the work and the cost for one platen was $69
>including shipping and tax.  I pulled the other platens and sent them
>off for restoration - should be good for another 40 years.
>I attached a couple "after" photos, but unfortunately I lost the
>"before" photo.  It looked like what you would expect after 4 decades,
>hard as a rock, small surface cracking, etc.
>Contact Peter or JohnPhone: 315-986-3511Fax: 315-986-2827E-mail:
>office at jjshort.comVISIT OUR WEBSITE AT WWW.JJSHORT.COM
>J.J. Short Associates, Inc.P.O. Box 183Fairport, New York 14450-0183
>Thanks.--daveW5DT
>
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