JS1 plastic neck plate spacer - Jemsite
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post #1 of 3 (permalink) Old 02-13-2012, 06:41 AM Thread Starter
 
Join Date: Feb 2012
Location: New Zealand
Posts: 5
JS1 plastic neck plate spacer

I have an early JS1 which I bought in 1992/3. A year or so after purchasing I removed the plastic neck plate cup, which acts as a spacer between the metal plate and the body. I did it to slightly improve comfort by reducing neck heel bulk, and after much measuring of screw lengths etc to make sure they wouldnt come out the fretboard!

Anyway, nearly 20 years later, I am wondering what the purpose of these plastic spacers was/is. My guess is that it has something to do with protecting the finish - especially necessary since the forces from the tilted plate might dig into the paint, causing cracks. Or is it something to do with factory tolerances or manufacturing techniques? I havent seen any adverse effects since removing the part myself, despite this being a very well used guitar...

Do the current models still have the plastic part?
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post #2 of 3 (permalink) Old 02-13-2012, 04:33 PM
 
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Join Date: Jun 2002
Location: Bozeman, MT
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Re: JS1 plastic neck plate spacer

Well, no one else chimed in so I'll take a shot.

The plastic plates are used by other manufactuers as well. I've seen them on regular flat (not contoured) heels. The main idea is to protect the finish -- overtightening the neck bolts can cause the metal plate to contort slightly so that the tension isn't evenly distributed under the plate. That can cause clearcoat fractures. I've also heard people complain about the depression and edge marks that the metal plate makes in the finish, but that seems silly because you have to remove the plate to even see that.

On the JS heel, the screws are angled relative to the plate. I suppose that could cause greater problems with uneven tension and flexed plates, but I've never had a problem with that. Nonetheless, I always use the plastic shim just in case. These are available from AllParts if you need a replacement.
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post #3 of 3 (permalink) Old 02-14-2012, 04:29 AM Thread Starter
 
Join Date: Feb 2012
Location: New Zealand
Posts: 5
Re: JS1 plastic neck plate spacer

Thanks. I guess that is pretty much what I surmised. Thanks for the tip on Allparts - I will have a look.
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