Re: [ATM] Cutting large-diameter PVC

["Bob May" <rmay@nethere.com>]

With a circular saw, the best is the paper round the tube.  I
prefer to drop by my butcher and get some butcher paper as it has
a better dge.  I now have a piece of .010" thick piece of styrene
from a plastics shop as well as some red vynal and both of them o
around medium sized tubes.
For work on a table saw, the thing to do is get a piece of
plywood or chipboard, etc. and clamp it to the fence, backing it
up with  some vertical support if necessary so that it is square
to the table.  This allows the tube to have its longest part
awlyays against the fence and start at a point wo that the long
est part of the tube is the last cut.  You can even roll the bube
over the blade if desired or put a pair of blocks down so that
you rotate the tube over the blade.
I'd not do the work on a radial arm saw as it will be a bit
difficult to setup well.
After sawing the tube, you can take a plane and smooth out the
edge with  no difficulty if you have a good sharp blade in it.
Otherwise, take some 320 grit  wet/dry paper and tape it to a
flat board and wet sand the edge flat.  A large file also can be
used to make sure that the edge is flat.  Use the biggest file
you can find for the flattest edge.  I'd probably use a standard
coarse cut )not the ones that are rasps_ and as wide as I can
find.
Bob May
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