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From: jeffj@sfsup.UUCP (J.S.Jonas)
Newsgroups: comp.periphs
Subject: Re: Looking for device to block certain keys on a keyboard
Message-ID: <1938@sfsup.UUCP>
Date: Wed, 26-Aug-87 12:03:53 EDT
Article-I.D.: sfsup.1938
Posted: Wed Aug 26 12:03:53 1987
Date-Received: Sat, 29-Aug-87 06:11:02 EDT
References: <485@drexel.Drexel.edu> <4987@felix.UUCP> <1089@randvax.UUCP>
Organization: AT&T-IS, Summit N.J. USA
Lines: 25
Summary: Honeywell did that too

[]
I have some surplus keyboards where keys were disabled by putting a
plastic ring under the key. It was just big enough (diameter) to go around
the post that the keycap goes on, and long enough (length) that the
key would go on the post but not move down enough to activate the switch.

Too big a diameter might cause adjacent keys to get stopped.
Too long would not allow the key back on the post.
Too short would allow the switch to close/open.

It looks more like a washer that a tube.

As Mark said:

In article <1089@randvax.UUCP>, lacasse@randvax.UUCP writes:
> Most good hardware stores (the ones that re-pin locks, will sell you
> quantity 1, 2-56 machine nut, etc) sell plastic tubing by the foot.
> They have a wide assortment of inside diameters.  I would think you
> could slice off about 1/2" of the appropriate tubing and put that
> under your keycap, around the key-switch.
> 
>     mark lacasse

Jeffrey Jonas
{ihnp4 | allegra} attunix ! jeffj