no hole

[dls]

the biggest risk in the standard euro barrel is its resistance to snapping they snap easily across the very screw hole which "secures" them into the lock case this is because they have to remove a large portion of the remaining metal which joins the two halfs together, the design is weak and the hole adds considerably to this so why not get rid of it.
i know there are snap resistant locks out there but they may not suit every budget so why not offer a lock with a small dimple on either side about 4 mm wide and design all future cases to use a grub screw to secure the barre,l if this screw was m6 then it would be backward compatible with the current barrels with a m5 thread.
just another idea
by the way my front door had a standard twin combi held in with a m5 grub screw.

[dls]

By the way when i say the m6 grub screw would be backward compatible with the m5 threaded hole i didnt mean that it would screw into it i meant that the point of the grub screw would grip the hole like the dimple.

[vov35]

wouldn't this make the lock more vulnerable to pulling....

[mh]

The German company BKS has made lock cases and cylinders like that some time ago. Maybe 10 to 20 years ago.

Pulling is not an issue with that, the cylinder is held at the cam as well, the point is to prevent it from breaking while pulled.

Was it commercially successful? I think it wasn't.
Escutcheon plates that cover the front and also provide some form of additional drill protection were apparently more appealing to many customers.

Cheers
mh

[dls]

20 years ago they knew about the snapping issue and they are getting more popular every day it doesnt make sense when you think about it.

[vov35]

one more thing: I don't see very many euro locks on anything but glass storm doors around here... I don't quite care for improving euro cylinders that much.

[dls]

euro barrels are very common over here and if you want to be truly open source with a design you should consider all applications so you can reach the masses

[Rickthepick]

problem with changing the design so late down the line is that all manufacturers would then have to change their lock cases to suit... i cant see that happening at such a late stage.

using a more suitable metal is the best method. Locks that use a hard steel spine are 100% un snappable, you would break everything in the door but that piece of the lock.

There are lots of heavy duty escutcheons available too and re-inforced handles to beef up upvc door security

[SnowyBoy]

ASSA/Abloy are moving forward with their designs. They incorporate a steel bar that is pinned to each half of the case with four steel pins (two each side).

[exspook]

DOM have a similiar design in there modular europrofile cylinders

http://www.ronis-dom.co.uk/modular.html

(I have several of these )

And BANHAM realised this and have offset fixing holes to give a greater cross sectional area

http://www.directlocks.co.uk/banham-l11 ... -1002.html

[Rickthepick]

That banham is pretty cool never seen one

[exspook]

http://www.banham.co.uk/locks/door-locks/

the new line of locks they produce are excellent

most houses (well decent houses) in London are fitted out with these

deadlocking rim and a hook bolt below, they have armoured escutcheons and a funky offset centre cam

[Rickthepick]

HOw often do you get called to open those things? Wouldnt fancy that as my everyday work, or do banham have their own locksmiths with 'the knowledge'

[exspook]

BANHAM have there own people

and I have opened on average two a month, mainly repo work

The older pin cylinders do impression well and the main door locks are normally keyed alike.

I have not had to open the new line of dimple locks as they do look challenging

[mhole]

Banham also offer keyholding services, so I'd imagine that would be used in a lockout situation.

The nightlatches are easily opened if not doublelocked, using a bypass similar to the widely known Ingersoll SC71 bypass. No more on that in the open forum...

I've also opened the deadlocks using the normal DE approach for euro cyls, albeit from the inside with the escutcheon removed. They're probably even weaker than a conventional euro in the same area, so I'm sure this technique could be used from the outside too.