Plastic Key. Defeat Magnets.

[Joker5BB]

why a plastic key? ou can have a brass key, and even if the lock had nodymium magnets, i can just use non magnetic stainless steel pick's.

[SnowyBoy]

why a plastic key? ou can have a brass key, and even if the lock had nodymium magnets, i can just use non magnetic stainless steel pick's.

Yah, we already established by post 8 that the plastic key idea was flawed..... concidering the fact brass is no ferrous anyway.

All we need to wait for now is someone to flame you for necroposting :p

[NanoDuke]

If you actually implemented these "magnetic springs" won't that make picking even easier. You can come at the lock from underneath with a large magnet and *bang* all the "springs" compress upwards. Then there will be no resistive force when you begin your SPPing. Raking would be a breeze.

[REparsed]

If the bottom pins themselves were neodymium magnets and the plug were made of aluminum the pins would resist movement with a force proportional to the speed they were moving and defeat a bump (maybe).

If both top and bottom pins were neodymium magnets (or a magnet/ferrous metal pair) they would stick together and resist bumping.

[LocksmithArmy]

I have been expierimenting with neodymium magnets quite a bit recently for use in perpetual motion... they are quite brital. the force of bumping could quite possibly shatter a pin or 2.

[REparsed]

Yes they are quite brittle. The would probably be best suited for use as top pins.

[NanoDuke]

It depends on how the magnets are polarized. You can have both top and bottom pins with opposing domains, that repel each other.

But I like your idea about them opposing motion. If you have a non-magnetic casing, with magnets as pins, you get eddy currents in the casing as the pins move. The eddy currents move in such a way as to oppose the kinetic motion. This would resist bumping.

[LocksmithArmy]

It depends on how the magnets are polarized. You can have both top and bottom pins with opposing domains, that repel each other.

why would you have your top and bottom pins repel eachother man... that would open with no picking... it would leave a huge gap like it is constantly bumped, or am I missin somthing

[NanoDuke]

Maybe I'm the one that's lost. I was going on the thought of having the magnets as a replacement for the springs.

Yep, based on SnowyBoy's post on page one. I thought that's what we were still discussing.

Ok, how about this then.....


Brass everything as normal, little disc magnet set in the top of each top pin, another oposing magnet set in the stack cap.... no need for springs! Slight posibility it would be unbumpable then.

[LocksmithArmy]

yeah thats magnets above the top pins and magnetic top pins sure... but not oposing top and bottom pins that would leave a gap because they would be pushing aginst eachother. you want the top pins to push down on the key pins.

[NanoDuke]

Ah yes, you're right. I'm getting my terminology mixed up.

[Tyler J. Thomas]

Any of you guys ever seen how Miwa utilizes magnets in regards to pin stacks? Truly ingenious design - only wish they had a bigger stake in the U.S. market. Best lock I've ever worked on.

[SadisticPsycopath]

Guys, original poster here. Forgot my account name. Made new account. Remembered old one in the shower.

My original idea was magnets that would repel the entering of a magnetised object. (Bump keys?).
These would sit on either side of the lock.

It is possible, as long as the lock is not magnetised. But if the bump key is also not magnetised, then it is allowed to enter.

The repulsors, as I will now call them, cause it sounds cool, are just a secondary measure. Meant to stop some, but not all, methods of entry.

Thanks for your time.

[mhole]

Interesting. I'd also recommend having an engraving of a cross on the cylinder, this would prevent vampires picking the lock.

[SadisticPsycopath]

Okay. If the magnets were arranged so the pins had the opposing charge to a magnet below them, the pins would be harder to pick.

This is assuming that the pins are pointing towards the floor. (European style?)