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Here is my new tempering setup I have been playing with.
I took the bi metallic thermostat/switch out of the fry daddy, and am using a pid and relay to control the thing.
It holds the temps very steady, a lot less variation than my toaster oven.
I have peanut oil in it right now, it seems to do ok up to 450F.
Charlie
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Wow, that's awesome! Did u come up with the idea to temper in oil or was this inspired by something u seen?
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Tempering in oil is not an original idea. Bob Allman's setup is what got me thinking about it.Quote:
Originally Posted by Dafonz6987
I thought Max is also doing that. Or experimenting with that.
Man I miss your workshop :)
I have to try this. Does the steel still change color?
The steel does not change color, it is under the oil and away from the oxygen and does not form the oxides.Quote:
Originally Posted by ScottGoodman
Charlie
Can you do chicken at the same time as the blades?
I confess I have absolutely no idea how to make use of a PID controller but I suppose I should finish my forge before worrying about it. Then again, I could just buy your toaster oven!
Nice job with another inspiration for the rest of us!
So, for a layman who is still using a toaster oven...they could use a cookie sheet with oil in it to get the same results? Being a volunteer fireman makes me rethink this a bit...
All kidding aside, I can see this as as one of those absolute perfect things. No hot spots or un-even anything. Kind of a companion to heat treat salt baths.
A toaster oven works fine, a toaster oven with a little mass it, like a small piece of plate steel works even better.
I had a pid ( really simple to hook up Ron, diagram on side of unit, comes as a kit (pid,relay,thermocouple,heat sink) on ebay) fry daddy, and some free time on hand. It is not a leaps and bounds improvement over the toaster oven, it is just a tightening up of my heat treating process.
That should work VERY well.......as long as you don't burn your shop/house down. :) But in all seriousness, at 450F, you are right at the smoke point for peanut oil. Safflower oil has smoke point of 510F. Are you concerned about the durability of the Fry Daddy parts? Those little devices typically don't run that hot.
[QUOTE=JDM61;1634469]That should work VERY well.......as long as you don't burn your shop/house down. :) But in all seriousness, at 450F, you are right at the smoke point for peanut oil. Safflower oil has smoke point of 510F. Are you concerned about the durability of the Fry Daddy parts? Those little devices typically don't run that hot.[/QUOT
If the fry daddy dies, I will go to Goodwill and buy another one, actually I have a few waiting in the wings. As for the oil when I replace it, I will get something better, as for now it is the best the local super market had to offer.
I am normally tempering at 400 which is not to stressful on the whole sha-bang.
Cool. Keep us updated. An oil tempering setup would be nice and eliminate the need to buy a second oven. I already use a turkey fryer for one of my quench tanks and it would be interesting to see if you could get the same kind of accurate temp control in a tank that tall using a pid and heating element or burner somehow. What temperature do you use to temper your W2 razors?
[QUOTE=spazola;1634470
If the fry daddy dies, I will go to Goodwill and buy another one, actually I have a few waiting in the wings. As for the oil when I replace it, I will get something better, as for now it is the best the local super market had to offer.
I am normally tempering at 400 which is not to stressful on the whole sha-bang.[/QUOTE]
Hey Charlie, I have a patronizing suggestion for you...
Maybe you only had it on the tablesaw and carpet for the photo, but just it case, I suggest that you keep that thing on the floor in another room. We all know that you've got the space to keep it far from anything else in order to keep you and your shop safe.
Yes. The big room with the concrete floor seems like a good idea.
I say this both as a friend thinking about your personal wellbeing, and as someone who wants that shop to still be around next year :DQuote:
Originally Posted by Bruno
Ron, Bruno, I did the initial runs and testing with it on the floor. I am some-what comfortable with it now. I appreciate your guys thoughts on the subject.
450 for tempering the W2
Cool something else to look at and not know a thing about! Ya I,m with the other guys I,m sure you know what your doing, but I need that shop to be standing, and your smiling face waiting in it for us to return. Tc
I just don't know about this Charlie. I was getting used to all your first generation tools being completely home-made. I expected a PID on a Radio Shack circuit board with surplus parts all soldered together...
Mike talked back when about someone, I think in England, who was doing a combination quench and temper in 420 degree peanut (?) oil - similar to austentempering in salt. You'd have to figure out how much quenching the razor raises the oil temperature. Might be worth experimenting with this idea.
