As anyone made a long tempering oven?

[Neb]

I wonder if you couldn't use oil as your tactile process. With the smoke point being your heat indicator. I doubt you'd hit 600° but Idk if they went that hot back then, crossbow prod breaking would have been much more common back then. My understanding is the steel prods now can be flexed furthur than the ones they made back then because the metal and heat treating processes are so much better now. Back then I wonder if they actually went so hot.

You think you might email tod at todsworshop? He makes does some amazing work in that space, no doubt modernized but he might have some insights on the historical aspect.

Yes. Seriously.

There are some mechanical engineering (where I am not trained) requirements of the steel.

We should define the goal before the process is defined.

Adding...

It can be re-tempered. Experiment starting small and working up.

Not sure what other help I can offer.

Ben

 

[Aerindel]

I wonder if you couldn't use oil as your tactile process. With the smoke point being your heat indicator. I doubt you'd hit 600° but Idk if they went that hot back then, crossbow prod breaking would have been much more common back then. My understanding is the steel prods now can be flexed furthur than the ones they made back then because the metal and heat treating processes are so much better now. Back then I wonder if they actually went so hot.

You think you might email tod at todsworshop? He makes does some amazing work in that space, no doubt modernized but he might have some insights on the historical aspect.

Yeah, you can't get that hot with oil. Modern mass production uses liquid salt or lead bath's.

They would still have had to get that hot back then, physics hasn't changed.

Tod doesn't make his own prods, he has them custom made by a local industrial spring maker. Tad is amazing, but he is not a smith, all his metal work is made by others, he just files and fits it etc.

 

[Aerindel]

It can be re-tempered. Experiment starting small and working up.

Yes, I will be doing that once I have the oven set up. I know how to make small springs, that is easy. The problem is scale, hence the need for a large oven.

"We should define the goal before the process is defined."

The goal, is to make a leaf spring with maximum elasticity possible, while still providing a high level of resistance.

The theoretical idea, is the point where it can bend as far as possible, without breaking, or taking a set, where any harder would make it break, and any softer would make it take a set.

My research shows this should be at about a 600º temper.....I haven't been able to find anything more precise. I do know that swords made to 450º, will break before they will bend, so that is too cool. I've never really gone much higher temp than 500º for stuff like axes and maces, but I'm not trying to use those as springs.

 

[Canon29]

Yeah, you can't get that hot with oil. Modern mass production uses liquid salt or lead bath's.

They would still have had to get that hot back then, physics hasn't changed.

Tod doesn't make his own prods, he has them custom made by a local industrial spring maker. Tad is amazing, but he is not a smith, all his metal work is made by others, he just files and fits it etc.

I didn't know that about tod, I feel like I've heard him claim he makes his own prod somewhere before usually my memory is better than that.

Makes sense though, crossing over from the carved components to the minutia of the metal ones is a big jump.

 

[Neb]

Black bear forge play list.



Been too busy to follow him for years.

Ben