December - February - Things are a little slow this month due to
workload and hospital visits - Father-in-law has been diagnosed with an
aortic aneurism some 7.5cm in diameter, but the NHS has been superb,
and he's due for the Op. Monday 13th, so we're sitting with fingers
crossed for a successful outcome.
The few bits I have done all revolve aropund getting the stock prepared for the decks - a different take on "spring-fingers"
has allowed me to split all of the narrower stock to 16mm thickness boards.
In essence, the right hand stop is set to give a nominal 17mm
thickness from my 37-39mm stock, as this should be the most consistent
plank. To the left, a solid 18mm ply backing then has a piece of
polycarb (waxed for friction reduction) sandwiching a 20mm thick layer
of seating foam, giving a much taller face with which to apply a
consistent pressure to the plank & keep it in position. (My
original idea involed spring loaded rollers, but that would have been
waaay too much hassle)
Once started, it was relatively easy to guide the plank through the splitting process without any significant lateral wavering
the planks are also pretty heavy at original thickness, but slow
progress through the cut zone gives a nice, clear groove some 73mm deep.
(Note the difference in deflection of the polycarb guide between the
pictures)
I'm now left with four planks - 2 at 230mm wide, and 2 at 320mm,
which need the grooves joined up. I've tried handsawing, but if I go
that way I'll be doing it til June 2013. The reciprcating saw I have
won't take a blade long enough for the widest one, but doesn't seem to
be making much impression on the narrower in terms of cutting progress,
so I'm looking for a joinery shop with a band saw who will have a go for
me.
If anyone has any other ideas, I'd be grateful... |