SFIC tension tool question

by **vector40** » 25 Mar 2005 10:04

Using the operating key in a BEST removable core, can you turn either direction to open the lock?

And why do the Peterson SFIC tension tools appear to be "toothed" on the side that would facilitate left-handed picking?

by **stick** » 25 Mar 2005 12:02

The locks are turned 15 degrees clockwise to be removed, so the SFIC tension tools are designed to be turned left. Not sure about the operating key, but SFIC tension tools are used to pick the control line, not the operating line.

by **rakemaster** » 25 Mar 2005 12:27

See the crypto.com article www.crypto.com/photos/misc/sfic/index.html to see why the teeth are there.

you always turn the control key clockwise.

which way to turn the operating key depends on the lock the core is in, not the core. so it could be either way, depending.

Rakemaster

by **vector40** » 25 Mar 2005 15:07

Oh, no, I know why the teeth are there, I'm curious why they're on that particular side; don't most right-handed pickers hold their tension wrench (torkylever

) on the left of the lock?

And my mistake, I'd thought the special tool was for picking to the operating line... is there no way to isolate the operating shearline aside from hoping to hit it on each pin by luck, then?

by **vector40** » 25 Mar 2005 15:08

Oh, btw, I keep noticing Blaze referring to "MACS restriction" on crypto. Anyone know what that means?

by **digital_blue** » 25 Mar 2005 15:10

MACS = Maximum Adjacent Cut Specification. In simple terms, you can't put a 9 cut beside a 1 cut or the key gets stuck. The combined angles of the cuts should be between 90 and 120 degrees as I recall.

db

by **rakemaster** » 25 Mar 2005 15:14

vector40 wrote:Oh, no, I know why the teeth are there, I'm curious why they're on that particular side; don't most right-handed pickers hold their tension wrench (torkylever ) on the left of the lock?

And my mistake, I'd thought the special tool was for picking to the operating line... is there no way to isolate the operating shearline aside from hoping to hit it on each pin by luck, then?

I dont know how to pick to the operating key except by luck, but i did it a few times. Theres sometimes more friction on the control shear i think.

and i think the tool is shaped that way because most ppl like to push DOWN not up and you are going clockwise. Im a righty and I made my homemade best tool the same way, seems to work beter.

by **vector40** » 25 Mar 2005 16:46

Wrench on the left side, pushing down, you'll be torquing COUNTER-clockwise, that wouldn't work...

by **rakemaster** » 25 Mar 2005 18:13

vector40 wrote:Wrench on the left side, pushing down, you'll be torquing COUNTER-clockwise, that wouldn't work...

right, which is why the handle is on the right side in the pterson tool (i think) and the one i made.

by **vector40** » 26 Mar 2005 9:19

Oh... duh.

hehe. Must've been tired

Who here has actually picked one of these with the special tool? How hard would you rate it?

And what other SFICs have you seen, aside from BEST? I know that all of the Primus's I've seen appear to be interchangable, and IIRC some other high-end ones as well.

by **stick** » 27 Mar 2005 15:48

Falcon and Schlage SFICs are pretty common too. My school's purely Falcons and Primuses.

by **vector40** » 27 Mar 2005 18:10

Do others use the same system (with the holes) as the BEST ones, and are susceptible to the same tool?

by **stick** » 27 Mar 2005 22:11

Yes. According to peterson-international, the SFIC tension tool will work on Arrow, Best, Falcon, Ilco, KSP, Schlage and Master SFICs.

by **Beekeypr** » 31 Mar 2005 7:54

The definition is correct, but the reasoning isn't. Due to MACS, in some keying systems, if you cut a 9 next to a 0 or 1, there isn't enough material left to support the root of the shallow cut left on the key. In Best, you can have a 0 next to a 9 without having a MACS violation.

[quote="digital_blue"]MACS = Maximum Adjacent Cut Specification. In simple terms, you can't put a 9 cut beside a 1 cut or the key gets stuck. The combined angles of the cuts should be between 90 and 120 degrees as I recall.

db[/quote]

by **vector40** » 31 Mar 2005 14:23

Why is it different?

SFIC tension tool question

SFIC tension tool question

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