How to Make a Poor Man’s Mitre Box | Paul Sellers

sometimes when you're at home and you
need a miter box you need to cut maitus for something like a picture frame some
beading in the inside of the bottom of cupboard something like that it's very
easy to run out and buy one it's easy to run it to the chop saw make your chop saw cut but this is a very effective way of getting you ready to work and all I've
got is two pieces of one by three which is actually three quarters of an inch by
two and three quarters but it could be any size of wood you want it to be what
we're going to do is very quickly make a miter box and this is how I make mine
every time I do a job I pick up a piece of wood like this knife wall here right
on the 45 so this needs to be dead-on about forty-five it's critical for a knife wall two or three deep cuts like this one going the opposite way let me see
there anywhere in the length of the wood it doesn't really matter just work
accurately right into the corner like that now we're going to make a little
step down in there on both of those we'll just take a wider chisel like this
cut into it so you saw drops way down into it against the knife wall and that
slope will push the saw into the knife wall as well so what I'm going to do is
put a pencil line on your side so you can see what I'm doing here like this
just a guide really just so you can see where I'm going and on this side I'm
going to go here I've got to be exactly on that line now I'm going to go down
let's say this is my material that I'm cutting my picture frame from all my
beading from I want to go down far enough to leave a little a little bit of
both so I'm going to leave half an inch or so above
about 12 millimeters above the frame and then just make a mark here now
you could just use your finger and run the gauge line like that or you could set
a marking gauge like this just to make sure that you are parallel to the edge
like this and run a gauge line along the edge to guide you for your cut so there
is my line there and this piece is going to go here in a minute so I'm going to
cut down those knife walls now now I've got a fairly fine saw here it's a gent saw
but any tenon saw would work so I go right into the corner now I don't know if you
can see here when I've got my saw against the wall here I put my two
fingers right up against the side of the saw and I push with the back of my nails
to keep it tight up against the wall and push if I can so now I'm in I've taken
three or four strokes just stop yourself there because now the most important
thing is I got down the line perpendicular I want to be dead on the
line so I start to drop my hang here almost immediately with each cut because
I don't have to worry about the 45 degrees because the kerf is going to keep me in
place loose hand loose arm follow the knife wall only because I want to get as close to
45 as I possibly can this side here not so easy to get my fingers on this side
so I'm going more carefully keeping my saw dead tight up against the knife wall
so there's no gap no margin at all and I'm dropping the hand
I'm going back up because it's strain just a little bit just use the side of my teeth
just to correct my saw down to just beyond the line that I marked can you
see I just went past the line this little bit because I'm actually going to
cut into this seat piece here the next bit is so simple this bit you
could glue this make it more permanently attached but this actually I think It'll
defy you to get this apart double-sided tape does work just about as perfectly
as anything for this just about as good as anything I can think of lift this off
I'm going to go with the second piece and it's so thin I can go over the top
of the other without worrying this is very effective and this will get
you the accuracy you need you won't get this accuracy using a bought miter box
they just don't come that accurately they're too sloppy now what I have done
is I've checked this four square on here so that my piece isn't slanting away in
other words I custom-made the piece i've got a little bit of a shaving in there so
line this up here with your gauge line work accurately and then your mitos will
come out very close to being ready to put together clamp it in the vise like
that and that's how you make a homemade miter box that will get you in the zone
straight away and then there you can see it's together just made a little step
there I can put another miter box on this side when this does where and they
do where I can use this side and make another one so there is my miter box is
my stick of wood the nice thing is this fits the curve perfectly with just
enough friction so I'm going to go here and with a light pass with the saw light
strokes you end up with a very very pristine miter so there you can see i'll just turn this
so you can see there you have a perfect mitre and I think that's ready to go
actually I probably wouldn't even have to shoot this on a shooting board beautiful simple and effective

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