For the manner in which men live is so different from the way in which they ought to live, that he who leaves the common course for that which he ought to follow will find that it leads him to ruin rather than safety.

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Saturday, February 25, 2012

Stair saw

As crazy as things have been lately, between rewiring my house and working on my bike, I set aside a little time to get started on making a stair saw.
The donor, a clunky old Craftsman saw that I got for the hardware.

A few minutes of work with the plasma cutter...if you've never used a plasma cutter, they are one of the coolest tools EVER! High pressure air is forced over an arc through an orifice, creating a plasma, which is at some incredibly ridiculous temperature, which then proceeds to actually vaporize the steel.

One of the blanks.

The new blade. As you can see, I did a much better job cutting the slot on the left, a bit of clean up remains on the right side.  More to come!


  1. Sweet! I love using the plasma cutter. Does the saw plate have any temper to it? If it does, will the plazma cutter ruin the temper? Im thinking of making some card scrapers out of an old handsaw, but I may need to save some of it for a new stair saw too.Thanks -Kgoold

  2. The great thing about plasma cutters is the concentrated heat, therefore the heat stays relatively localized. You can see only a little bit of a color change on the sides of the cut. So, if I'm not an idiot, that would indicate that you're probably only loosing the temper out of a tiny bit of the plate immediately next to the cut. At the most, I'm thinking one soft tooth on either end of the saw. I clamped the saw to a piece of aluminum to act as a heat sink as well, at draw the heat faster. I could always toss it on the hardness tester...

  3. I always find something to use my cutter on, definitely couldn't get by without it.