by Shrub » 28 Mar 2007 19:06
Click on my www button and throw away the MIT guide,
A binding pin is a pin that is being trapped against the plug and cylinder body before any of the others,
This is achievable because when the lock maker produces the locks the line of holes which the pins sit in are not machined in a perfect line, this is because a lock with less accuricy needed when making it becomes a lot cheaper than one that needs expensive calibrated machines to make,
That said no matter how goog the machine is NOTHING in the world can be perfect,
If a piece of string was wanted 100mm long would 100.1mm be ok? would 99.99mm be ok? would 100.000001mm be ok? thats called tolerance, you will never cut a piece of string 100mm dead on as there is no such thing so you state a tolerance of say +/- 0.5mm which would mean that string could be 100.5mm or 99.5mm or any measurement in between,
The higher the security of the lock the better the tolerance was when they were made in the factory,
Now the binding pin is really only the pin that is hitting the side of the pin chamber before the next one in the line does,
Binding pins dont travle in any order as the holes can be drilled in any orientation so say number 1 pin binds first it doesnt mean number 2 pin would bind second,
The number 5 pin hole may have been drilled closer to the line the first pin hole was drilled so pin 5 would be the next pin binding,
To find a binding pin you excet a little tension and feel the pins, some will as you say be springy, this is the pin pushing against the spring in the lock,
Some may be solid, this is when you have trapped more than one pin against the pin chamber,
When you have more than one pin solid it is because you are putting on too much tension, slacken off the tension until only one pin is trapped against the pin chamber, this is your binding pin,
Set that pin and then feel for the next binding pin which could as i say be any one of the other pins, it just depends which one is closer to the same line as the first pin you have set,
Im sorry ive lost the plot a bit on this post but i get carried away and mumble on but i leave it here incase some of it is actually useful to you both,