BEST SFIC types

by **Afisch** » 30 Nov 2007 2:52

I don't think there is a tool to make sure you only get the operating shearline. It is just a case of using a normal tension wrench and not pushing them too far. Good luck.

by **dougfarre** » 30 Nov 2007 10:18

criminalhate wrote:
bja743 wrote:OK well im srry guys ...i did some recearch and found out the ones i need HOWEVER... the ones i was looking at was to better pick the Controls shear line... i need one to help me in picking the Operating shear line ( just checking but operating shear line is opening the lock not removing the IC right ) anyway if anyone has a site that sells those, if they do, then plz tell me
BTW the ones i was looking at are Petersons... they are on
............www.hawleylocksupply.com..................

PS. This is what the alphabet would look like if Q and R were gone...

If you just want to pick the standard control shear then you use a normal tension wrench that fits the key way.

I would have to say that using a normal tension wrench on a BEST IC lock will get you little progress. Your best bet is to take advantage of the special tension tool.

by **bja743** » 30 Nov 2007 20:37

Using alot of tension...mmmmmm...i need to try that but , i have 1 more question... if you picked the control shear line, and pooped the IC out then could you still oped the Padlock/door? even if the lock is out ????!?!?!?!? THXZ for the web site

PS. This is what the alphebet would look like if Q and R were gone...

by **bja743** » 30 Nov 2007 20:39

LMAO...Pop the IC out...lol

by **dougfarre** » 30 Nov 2007 20:51

The answer to your question is most definitely yes.

by **Trip Doctor** » 30 Nov 2007 23:40

Has anyone tried Impressioning these? It seems that there wouldn't be a whole 'double shearline' problem in this case, since you would always get at the uppermost shearline (control?).

by **Afisch** » 1 Dec 2007 4:41

Picking it to the control shearline unlocks it as well as simply removing the core. The idea of the IC wrenches is to make picking it easier, by only picking to one shearline not two.

by **lostlink** » 1 Dec 2007 7:28

Afisch wrote:Picking it to the control shearline unlocks it as well as simply removing the core. The idea of the IC wrenches is to make picking it easier, by only picking to one shearline not two.

And we all know if the control sleeve has been modified or worse yet it is an Arrow Choice IC those wrenches have little use...........

by **WOT** » 2 Dec 2007 3:26

Trip Doctor wrote:Has anyone tried Impressioning these? It seems that there wouldn't be a whole 'double shearline' problem in this case, since you would always get at the uppermost shearline (control?).

What gives you the idea that you only get the control shear with impressioning?

by **Trip Doctor** » 2 Dec 2007 16:51

WOT wrote:
Trip Doctor wrote:Has anyone tried Impressioning these? It seems that there wouldn't be a whole 'double shearline' problem in this case, since you would always get at the uppermost shearline (control?).

What gives you the idea that you only get the control shear with impressioning?

Well, a blank would lift the pins all the way up, lifting all the cuts above the shearline. So when you're filing the markings made by the binding pin, you would stop (ideally) when it sets and allows another one to bind. It would first set when the lower cut of that pinstack lines up with the top shearline (and same with the other stacks).. right?

Ok.. and now that I think about it some more... A blank wouldn't necesseraly lift all the cuts above the upper shearline would it.
Bah.

by **Trip Doctor** » 2 Dec 2007 17:27

Ok (sorry for double post), now that I think about it a bit MORE, here are the conditions I've come up with. Correct me if I'm wrong.

1. If the middle pin in a pinstack is smaller than the distance between the two shearlines, then the first set will occur at the upper shearline (whether it's the higher or lower cut that will set).

2. If the middle pin in a pinstack is bigger than the distance between the two shearline, then:
- (a) If the blank raises BOTH cuts above the upper shearline, then the first set will occur at the (of course) upper shearline.
- (b) If the blank raises only the higher cut above the upper shearline (and the lower cut between the two shearlines), then the first set will occur at the lower shearline.

Now, for an A2 system, the smallest master/control pins are .025". I don't know what the distance between the two shearlines is, but if it's under .025", then the 1st condition won't even occur.
I don't know a lot of measaurements for these locks, but perhaps the conditions can be lowered down even more to something like "unless key cuts 1 and 2 are used, this happens".

Enlighten me WOT.

by **MacGyver101** » 3 Dec 2007 13:14

Trip Doctor wrote:It would first set when the lower cut of that pinstack lines up with the top shearline (and same with the other stacks).. right?

Ah. You seem to be assuming that the operating cuts are all deeper than the control cuts, but this is not the case. The shear lines are at different heights, but the pin stacks are built up such that there is no restriction that a control cut must be deeper/shallower/different than an operating cut. (Well, other than, obviously, at least ONE of the control cuts must differ from an operating cut.) :wink:

by **Raymond** » 4 Dec 2007 1:33

INTERESTING discussion. I am going to sputter around and ramble on with interesting facts.
The distance from the standard plug shearline to the control shearline is exactly .125 inch. It is no coincidence that there are 10 depths, 0 to 9.
Each step in an A2 system is exactly .0125. The top pin varies in size only to prevent crushing the springs. The combined lengths of bottom pin, master wafers and control pin minus 10 equals the control key cut. The sum of all pins should equal 23. (A2 system). Top pins should be in the range of 4 to 13 only. Any other pin size on the top and the pinner didnt follow the pinning rules. The is no limitation in regard to maximum adjacent cuts - you can use a 9 next to a 0. Best may have about 25 + keyways and there are many more companies with their own keyways. Arrow, Marks, Scorpion, Medeco, KSP, etc., etc.

A2 normally uses two-step progression to prevent interchanges. A4 can use one-step progression with no problems.

The different types of control shear pick turning tools are because a specific tool is designed for certain keyways. In the wrong keyway the turning tool may fall over and not hold onto the holes in the bottom of the sleeve. Some of the tools require a "toothpick" be inserted next to the turning tool to hold it upright.

Picking and impressioning both are neither easy nor difficult on sfic cores. You can set a pin at either shearline and not know which. Sometimes one will pick easily at the control and another at the opening shear. There is no rule to control which.

I like working with sfic. Add a few spool pins and forget picking it easily

by **WOT** » 5 Dec 2007 4:35

Trip Doctor wrote:Ok (sorry for double post), now that I think about it a bit MORE, here are the conditions I've come up with. Correct me if I'm wrong.

1. If the middle pin in a pinstack is smaller than the distance between the two shearlines, then the first set will occur at the upper shearline (whether it's the higher or lower cut that will set).

I'm not sure if you can reliably impression Best IC.

#0 cut is a valid cut for both operating and control keys and an uncut blank is pretty darn close to #0 that left uncut, it would usually work fine. So, if the operating/master is #0 cut and ctrl is #4, that cylinder would not respond to impressioning.

There's no rule saying which set of shearline will have lower/higher cuts and on a 7 pin cylinder, you have to get EVERY 7 pin to line up with either the control or operating shear or both shears will bind.

by **Afisch** » 5 Dec 2007 14:44

To add to what WOT said, that is the reason why the IC wrenches are in use.
It allows you to only tension one shearline and as such set pins to only one shearline.

BEST SFIC types

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