Making a meal of a "quick" job

Here's another entry into my "DiY how not to do stuff " annals. Read on only if you've got a strong stomach for details of technical incompetence. I'm just writing this to get it off my chest.

Our grandson Jacob stayed on Herbie recently for a weekend break and reported that the lock on the front doors had jammed.  I wasn't unduly surprised in that it had been a bit sticky for a while, so I thought I'd better install a new one pronto.

Ideally I wanted to replace it like for like to save having to drill new holes and cut new recesses in the doors, so I found one that was pretty much the same at good old Toolstation. Error numbro uno. In retrospect I'm not sure that was a good idea because the latch looks pretty cheap and nasty.  Should it fail when we're outside the boat, we probably wouldn't be able to get back in without damaging the doors

Anyhow, even though the new lock was near identical to the old one it still had a common problem. 

Most night latch locks are designed for doors that open inwards, but on Herbie (and most other boats I suspect) the doors open outwards. So when you get your new latch you have to dismantle it and turn the latch bolt (the brass thingy that sticks in and out as you operate the lock) the other way round.

Of course I had no idea how these things worked so when I took it to bits I was nervous of not being able to reassemble it. Error number 2 - always take a photo of  how it looks before you dismantle it. Of course I didn't. Fortunately I was able to practice on the old lock first so that helped a bit. Sometime later after pinching my fingers several. times and grovelling on the floor to retrieve a little spring, I managed it. So feeling pleased with myself I offered the new latch mechanism up to the door and was pleased when all the old screw holes were indeed in the right place.  

One thing you do have to do is to cut to length the tongue that pokes through from the actual lock on the outside of the door. (see that long sticky out thing in the picture above) Could I find my junior hacksaw? Of course not. It's probably hidden in plain sight like the pen that you put down which immediately disappears. So using two pairs of pliers I snapped off the excess length, and slid the new latch over it and screwed everything into place.  Job's a good'un. Well it should have been!  Now the b*&$y thing wouldn't turn.  Error number three -check you have trimmed the lock tongue short enough.

After taking it all off again and dropping little screws and wasting time looking for them, I deduced that the tongue was still a tad too long and was jamming against the latch cover. It looked like it just need a couple of millimetres trimming off. Well you can't do that with two pairs of pliers and I still could find the hacksaw so I resorted to my recent new friend the Mr Anglegrinder. Laying him on his back and wearing protective gloves I gingerly ground off the requisite 2 mil and set off back to the doors and screwed the latch back in place for the nth time. It worked! All I had to do now was to fit the thingy on the other side that the bolt slides into.  I screwed in on and tried the doors.  

Aah. If only it was that simple. You see, when you turn the latch bolt over, the flat side is now too close to the door surface to locate into the thingy on the other side. 

Doh! Now I could chisel a rebate to sink the thingy lower, or I could use a gasket to raise the latch a bit further from the door surface. Hmm. Of course my chisels are all back at our house.  So I called it a day for now. 

The latch does stop the door from opening - just -so it'll do while I contemplate getting a better quality lock - one I can trust. Of course that almost certainly will require reversing its bolt and drilling new holes in the door.  let's hope it goes better when I do it.  The cost of the lock and latch this time was only £14 so I can write that off to experience.