On 2010-11-21, Michael A. Terrell wrote:

Ignoramus3297 wrote:

On 2010-11-21, Michael A. Terrell wrote:

Ralph wrote:

[ ... ]

What good are security screws when anyone can go to HF and get tools for
$5.88 to remove them?


Not all security tools are available to the public. Some I used over
20 years ago still aren't sold without a lot of paperwork. The more
common types are more safety related, to keep general idiots out of
things.



Do you have an example?



A hollow oval head used for CATV equipment. Hamlin used them on
their descramblers. You could get them out with a pair of dykes, but
nor without destroying the screw and damaging the case. Either cost the
customer their account, and they could never get cable service with our
company, anywhere in the US. A list of violators was kept, along with
their personal information for future reference.


A five sided version of an Allen head, with a center pin and used for
wall plates for addressable taps. For that one you had to buy the taps,
controller, wall plates, screws and tools at one time.

That one does not sound that difficult for one of us to make.
(Hmm ... what would be nice would be some 1/4" hex drill rod stock
instead of round to start from. :-)

The oval head really would be easier with a CNC surface grinder
and an extra axis on an index head or rotary table.

Enjoy,
DoN.

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