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Tuesday, 3 July 2012

Green Oak Frame - Part 2

The frame is in and up.
Oak frame in position

I had quite a bit of work up in the loft space and ceiling first as I had to fix a metal bracket joining two purlins that used to touch each other, somewhere along the line they didn't and for the last few years a piece of 4x2 has been holding them together with about 4 nails in. With the removal of the wall it was essential to add something to make sure they were both going to be supported by the new oak frame. 
The view from the other side
The diagonal on the frame sits directly below the centre of the purlins and the whole frame is sitting on a steel beam in the floor. The frame itself is also fixed into the stone wall using a resin fixing and threaded bar. 
Kiln dried dowels are used
The frame was assembled using motice and tenons with dowels that were draw bored together. This means that the holes for the dowels are slightly off set so the joints are pulled together tightly when they are knocked in.
The pegs that we got were kiln dried, the idea being that they won't shrink when the rest of the green oak frame does and it holds it all tightly together. In reality the pegs were a little too dry and would split as soon as I started to knock them in, one peg had to come back out as the second knock with a hammer sent a split right down the centre of it, that doesn't make for a very fun assembly!
I think stopped chamfers really soften the look of the oak and make it look more finished
All the joints went together well, a couple I would have liked a little tighter but I know with green oak they are all liable to move anyway and I'm probably being far too fussy.
Since I took these photos I have removed the props and filled all the holes in the walls and ceiling that I needed for access, with a final sanding and a coat of oil I think the frame will make an interesting strutual feature in this bedroom and will be there for many years to come.

2 comments:

  1. Refrence your pegs splitting . did you use tapered pegs ?

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    Replies
    1. Yeah, they had a pretty heavy taper on them and started fine.
      During my apprenticeship we used to make our own but knocking a square peg through a round hole in 3/4" steel plate then just atper the ends ourselves, never split then.

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