On Wed, 9 Apr 2025, The Doctor via cctalk wrote:
My thinking was the former - one key cut for five pin
stacks, but only
four would be used by a given position.
Tony said that the plug slides forward and back, with a spring behind it.
With that setup, four cutes is likely to work, since you slide the key
and plug further back for the offset position.
As you mentioned, with a five cut key, but with different sets of four
pins, then it should be able to work WITHOUT pushing the key and plug
further in.
In terms of how much slop there can be, . . .
most lock companies (at least Schlage and BEST) make some keys that will
fit (a little more loosely) multiple different keyways.
Those are called "multi-milled" or "multi-section"
Schlage SC20 fits C, CE, E, EF, F, FG, and G. Whereas none of those
keys will fit any of the others, or vice versa.
similarly, fitting fewer keyways, Schlage H will fit C, CE, and E
Schlage J will fit E, EF, and F
Schlage K will fit F, FG, and G
But, the "L" or SC20 fits all of those; it's a thinner key, and is a
little sloppier than using the "right" key.
and, yes, those are far from all of Schlage's keyways.
BEST FM? and JKLM?
--
Grumpy Ol' Fred cisin(a)xenosoft.com