View Single Post
  #17   Report Post  
Posted to uk.d-i-y
Dennis@home Dennis@home is offline
external usenet poster
 
Posts: 2,554
Default Repairing timber shed uprights - fish plates?

On 24/07/2018 23:28, John Rumm wrote:
On 24/07/2018 17:26, newshound wrote:
On 24/07/2018 17:20, dennis@home wrote:
On 24/07/2018 16:42, wrote:
On 24/07/2018 16:08, newshound wrote:
On 24/07/2018 15:15,
wrote:
I have a large shed with 6" x 3" timber uprights resting on a stub
block wall. The bottom 2-3 feet of the posts is rotten so I want
to splice-in some new timber. I can't think how to cut a decent
lap joint in the bottom end of the remaining upright so I'm
tempted to butt join the timber and add steel plates (fish
plates?) on each side - at a guess these would be around 150 wide
450 long and a few mm thick.

Suggestions welcomed for how to cut a lap joint on the bottom of a
bit of timber that's waggling in the breeze, or for a source of
suitable steel plates.

A bit fiddly, but can't you make the basic cuts for a lap joint
with a circular saw? And square off with a panel saw. Then put
coach bolts through it.

Tough to do with the timber hanging down from the roof structure,
which it will be once I saw off the rotten bit. I suppose I could
cut a sort of half lap joint (zillions of half-depth cuts with a
circ saw, then cleaned-up with a chisel) while the rotten bit is
still attached and providing a little bit of anchorage, then saw off
the end. Hmm, perhaps I could first attach some sacrificial timber
over the rot and fix it to the wall to a provide temporary anchorage.

Sounds like a job for a multitool.

A bit slow, on 6 x 3.


also getting the 3" depth of cut could be tricky - you would have to
plunge from both sides.


To make a lap joint you can take a quarter out first and then take the
next quarter out. Assuming you have access to one corner and most of one
6" face.
Its easy with a multitool if a bit slow. You need less access than with
a circular saw or a hand saw.

Maybe one of those little chain saws in the other thread would do it better?