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| ven:
I might be asked to make a new keyhole escutcheon (surround) to be fixed to the outside of a church door. The o.d.would be about 30mm or so, a circular steel plate say 5mm thick with a pretty edge and the key shape in the centre. The steel plate could be weathered i.e. rusted by soaking in Coke (anything quicker?) but I wonder about making the two fixing screws, round head or countersunk, burglar-proof. I know that one-way wood screws could be bought but where from? i wouldn't want stainless steel ones because they wouldn't 'weather'. Perhaps ordinary steel wood screws with the anti-clock side of the slot filed off? Thanks for the replies! |
| vtsteam:
Well, best would be screwing it on from inside. Usually there's a couple of pillar shaped bosses on the inside of the escutcheon that are tapped for screws. Screws extend from the inside into that. You could braze a couple of pieces of rod to the inside of the escutcheon plate, and tap them to do the same thing. Or if the escutcheon is thick enough,you could tap it for screws. It might have to be inset in the door a little for that. |
| awemawson:
You don't reveal where you are in the galaxy, but I have a few boxes of security 'one way only' screws, you'd be welcome to a couple for the postage if it is geographically sensible. HOWEVER: they would look naff in my opinion in this situation - the one way feature is achieved by 'camming' the drive slot, so one side has a vertical face and the other a ramp - on a Church door maybe rather ugly. Why not weld / braze or what ever a pair of studs to the rear that penetrate the door and have nuts on the inside, so fixing is invisible ? |
| Fergus OMore:
Many years ago, I designed a set of tamper proof screws that would protect electric meters from being illegally tampered. Basically,once inserted and over tightened, the screw head sheared off leaving a fairly smooth surface. I suspect that Screwfix has something similar now. Nothing new in all this, it was the way that things like sea mines and such were disabled from being rendered harmless by bomb disposal teams. One of the techniques to fool this is still on the British Secret list. If you want to rust something- washing soda is the thing. My father was a sapper in the Royal Engineers :thumbup: And the preacher for next week's service will be nailed to the church door at the end of this service. :bow: Norman |
| Arbalist:
I used stainless steel screws on an old house number but used copper paint on them to look a bit better. Looked very nice against the Teak I thought. Not tamper proof though. |
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