Wednesday, June 21, 2017

Saw Renovation

I inherited this Disston 10 TPI rip-saw from my friends Andrew and Helen. It's a good-quality make, and will eventually be very useful to me. However, first it's going to need quite a bit of care.

The blade is very rusty, especially on one side — the side that was exposed to sea air for some years. That rust will have to be taken off and any major pitting polished and smoothed out. The handle is split in a couple of places, and will need to be glued and patched. I'll re-shape the grip a bit at the same time, to better suit my hand. And, of course, it will need to be sharpened; I'm not sure it ever has been.

Next day

Here's the saw plate after soaking in a bath of white vinegar and salt for about 30 hours, and a quick scrub down with steel wool. It hasn't got rid of all the rust, but the improvement is marked. Some grinding with increasingly fine wet-and-dry paper will take care of the rest, and will polish out any overly egregious pitting.

The screws were stuck well and truly into the wood of the handle, and with the existing cracks that meant that it pretty much fell to pieces as I disassembled it. I've glued all the bits back together, and I'll see if that will serve along with some judicious reinforcing, but if I have to make a new handle it's not the end of the world.


Some time later

Owing to various impediments, it's been nearly a week since I've been able to do anything more to the saw.

Today I've filed down the teeth on the plate to even them out before sharpening, and I've started reshaping the handle to fit my hand more comfortably.

Most of the reshaping is done with rasp, files and sandpaper, but I've also gouged out hollows for my finger and thumb.

It's been glued back together almost like a jig-saw, so I don't know if it will last forever. I'm using good glue though, so I'm hopeful. I may inset some reinforcing panels if need be.

One more day

Well, it's done. Not quite as good as new, but almost.

It has sharpened up well, but there's a catch about half way down the blade that I haven't tracked down the cause of. There are no kinks that I can see*, and no missing teeth. It doesn't seem to affect the quality of cut, so I'll probably just ignore it unless it gets too annoying.

I might possibly, at some stage in the future, take it up to 12 teeth per inch, but that's a job for another day when I'm feeling a bit more enthusiastic about filing.

* [NARRATOR] There was a kink.