304 is the alloy I use. Works great and is only a little more expensive than brass. The mild steel is 1018 and brass is alloy 260.
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304 is the alloy I use. Works great and is only a little more expensive than brass. The mild steel is 1018 and brass is alloy 260.
At least you've managed to fit the handle the right way up this time. That's got to be worth a bonus point.
Matt
How is the raging bull going with the folding? :rolleyes:
I thought I would remind you of this thread on folding backs which I know you have seen because you were one of the early contributors.
https://www.woodworkforums.com/f278/folded-179503
Regards
Paul
The raging bull is preparing the masses for an onslaught Paul.
Of biblical proportions.
Ok, enough big words for me I get my self in trouble.
Unfortunately in my world Paul shed time is worth more than a thousand of your best camels and back saw thrown in for free.
So I hang out here and throw ideas around.
It will happen once Spring hits.
O and it looks like I've fallen for my own big mouth.
Quote
"I like he's doing it not just gasbaging" lol
But thanks for keeping me in line Paul [emoji3][emoji3]
Rob,
With regard the annealing you said you do that part way through the folding.
I would of thought it would be beneficial to anneal it first before starting the bend Possibly more heat during the bending process maybe after half way through the bend.
But this may also cause more distortion than welcome.
Straightening a folded piece of metal can be done
But it's not the easiest compared to just one piece.
But bear in mind I've never made a folded back.
But do have a little metal work experience tho.
Cheers Matt
Just perpetuating the metaphor in what I hoped was a light hearted manner.
And you are welcome to all my camels, but the back saws......Ooooh, I'll have to think about that :D .
Just to show I too occasionally get a little shed time ( cold shed time at the moment) these are the two back saws I prepared. The front saw has a new handle, which was just bare wood the last time I showed a pic. Trouble is I can't remember where I posted it. That's what you get for digressing. Catches you out every time, but like Sun Tzu says, you have to be aware of your surroundings and make the most of opportunities:
Attachment 389780Attachment 389781
:wink:
No room for creative improvisation here as it had to be a replica. One day I'll make up my "own" saw. Consequently I am watching your progress with interest.
Regards
Paul
O me and my big mouth.
Sun Tzu
Would have me doing the dishes for a thousand wars lol.
Paul the back saws look most excellent.
If I'm ever up your way I would love to stop by for a look and chat,
Cheers Matt
Matt
I hope you will get up this way and you will be most welcome. Consider it a staging post.
Regards
Paul
Get together at Pauls
Sent from my iPhone using Tapatalk
I anneal the steel when it's about 3/4 folded shut. The final pressing, where the bending of the fold is extreme, is where the breakage usually occurs. Annealing at the start will make the job easier. I heat steel at about 1200 oF for 30 minutes, not dead soft annealing of course, and press the back to the final shape. The backs are often bowed slightly, perhaps due to internal stresses, when they come out of the final forming step something like 0.1" max. I then straighten the backs using an arbor press and a straight edge.
Hah!
Attachment 389793
Careful Matt, sawdomy, i.e. unnatural congress with a wood parting tool, might lead somewhere you'd rather not go.