Cliff Rohrabacher
06-04-2009, 11:55 AM
I got a bug to make my own DT saw.
I made it but not till I had first solved for my lack of hand filing skills by building the machine that tooths and sharpens the saw blanks.
http://www.sawmillcreek.org/showthread.php?t=98825&highlight=toother
OK great.
But I wanted more. I wanted my saw to have a nice brass back instead of that ugly aluminum rig with the holes in it that came with it as it started life as a Sheet-Rock joint compound spreader.
So I got some brass and cut it to the right size and applied it to the saw using epoxy the same way Vlad Spehar does it.
Well apparently what I did is not exactly the same way. I glued up my saw and brass last night and clamped it together.
Preparation before gluing was done using dry abrasives and naphtha to clean the metal surfaces.
Today I un-clamped it and it looked Great~!! Nice and stiff.
I cleaned it up and proceeded to mount my shiny new brass backed blade in my handle. After I got it all snugly settled in and was tightening the nuts down I caught some movement out of the corner of my eye that should not have been. It was sort of like catching the shadow of a rat scurrying.
The bloody brass had come away from the steel. Both brass pieced came away. The epoxy just let go almost as if I had pre-treated the metal with a mold release. It was that bizarre. Some epoxy film was on the brass and some on the steel.
Any clues what caused this?
As an aside: this batch of epoxy wasn't old and I've used it before with success.
I made it but not till I had first solved for my lack of hand filing skills by building the machine that tooths and sharpens the saw blanks.
http://www.sawmillcreek.org/showthread.php?t=98825&highlight=toother
OK great.
But I wanted more. I wanted my saw to have a nice brass back instead of that ugly aluminum rig with the holes in it that came with it as it started life as a Sheet-Rock joint compound spreader.
So I got some brass and cut it to the right size and applied it to the saw using epoxy the same way Vlad Spehar does it.
Well apparently what I did is not exactly the same way. I glued up my saw and brass last night and clamped it together.
Preparation before gluing was done using dry abrasives and naphtha to clean the metal surfaces.
Today I un-clamped it and it looked Great~!! Nice and stiff.
I cleaned it up and proceeded to mount my shiny new brass backed blade in my handle. After I got it all snugly settled in and was tightening the nuts down I caught some movement out of the corner of my eye that should not have been. It was sort of like catching the shadow of a rat scurrying.
The bloody brass had come away from the steel. Both brass pieced came away. The epoxy just let go almost as if I had pre-treated the metal with a mold release. It was that bizarre. Some epoxy film was on the brass and some on the steel.
Any clues what caused this?
As an aside: this batch of epoxy wasn't old and I've used it before with success.