So I'm insulating my house myself with 2 part spray polyurethane foam
insulation. I like to overfill the stud cavity slightly and then trim
the foam back flush with the studs. Using a hand saw works but is
fairly laborious and creates a "snow" of fine foam particles.
What I'd like is a 16" wide straight hot wire cutter on a yoke, then I
could run the two sides of the yoke along two adjacent studs and have
the hot wire cut the foam in the stud space flush. Is such a device
commercially available? Obviously I could make one but would prefer
a quicker solution.
If you don't want to drop a lotta cash, it's easy to make one.
I used wire from an old toaster, old power supply(I only need about 24v to
get it hot enough) and a "bow"
My bow is a 2x2, 3 feet long, on each end there's a rod sticking out
perpendicular about a foot.. the wire is attached to those.
Eezy peezy :)
Probably, but I made one quickly by bolting 2 3' 1x3s together near
one end to make a large pair of scissors, then putting 2 more screw
eyes near the ends of the long ends, then running 14 ga nichrome wire
between the screw eyes, with alligator clips and 12 ga copper wires
to a variac. You can tension the scissors with a turnbuckle between
the short ends of the scissors, if you like.
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