HT oven build

Thadbow said:
Very nice Jerid, it looks VERY similar to the way I built my oven. I would still think about adding the gasket around your door...
Great job
Click to expand...

The protruding door bricks seal pretty nicely into the throat. I imagine over time this will degrade.. I'll definitely be looking at gasket options as I progress.
 
Here is what I did for my gasket... I cut a frame out of a piece of sheetmetal, the o.d. the same size as the o.d. of the door and the i.d. I made where I wanted the outer most part o the gasket to seal against the brick. I then folded the stitched seam of the gasket under the frame and riveted to the door. It turned out really well.
I just read back through this and I was confused.... so here is a pic! I hope it helps

 
Started working on the electronics..

Not sure I'm happy with the enclosure I selected. Wishing I had more room on the back panel.

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Been hunting lately so this project has slowed..

However I did manage to get the door latch completed.


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Also made some additional progress on the electronics.

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Cheers.
 
Got the enclosure painted. Used 2000* tolerant paint.

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Also built a makeshift router table to cut the channels in the brick to run the heating elements.

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Bagged a young So Cal 2x2 muley this past Friday in zone D15. I didn't have time or conditions to grab a decent pic. Sun was coming up fast and it was 80* out. I was also on a slope so steep it was hard to simply stand upright. Had to tie the antlers to a bush to keep the thing from sliding down the hill while I quartered it. They always seem to die in the deepest canyons and on the steepest slopes. This was an 10 mile round trip hunt on foot with about 4000' elevation gain. I was whooped.

Second tag in hand and ready to put another one in the freezer.

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knifemaking is getting me into hunting as well, waiting for my .308 as we speak. Nice tag, I drove that zone quite a bit going to elsinore from mission viejo a couple years back. oven is looking good. If you can convert that welder to solid wire mig and things come out a little cleaner.
 
JeridJohnson said:
Started working on the electronics..

Not sure I'm happy with the enclosure I selected. Wishing I had more room on the back panel.

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Click to expand...

Nice looking setup Jerid. Do you have aluminum heat sinks for those SSRs? I made the mistake of not having them on my first build and started getting random temp overruns that burned up a few blades and a set of coils. It actually could have been worse. When those SSRs over heat, they just stay wide open.

Eric Fleming
www.flemingknives.com
 
My little router table worked great. Used a 1/2" straight cut bit from harbor freight.

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For the ends where it does a return I used my dremmel with a spiral cut bit. It worked surprisingly well too.

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Cheers.
 
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if you need staples to pin the elements, ceramic insulators, or brass barrels to connect the elements, I have a bunch. I can ship them to you.
 
Heating element routed and terminals installed. Still need to put in the staples. Also installed the thermocouple. Fabricated a box to cover the terminals on the back of the oven.

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Jerid,
Prevent a problem from happening by putting a long "U" staple as a hanger around the last TC insulator and up through the top brick. Bend the ends over to keep it in place. This will prevent the TC from bending down as it stays hot for an extended time. When installed horizontal like yours they can slowly creep downward.

Where the ends come out in the top brick, make a 1/2" deep groove between the holes. That way the wires end up embedded in the brick about 1/2" when the exposed ends are folded over. Then fill the groove with refractory cement to keep the hot wire from making a hot spot on the oven top.
 
Hi Jerid, Do you use any formula to calculate how many watts the coils for you HT oven size?
Thank you
 
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Stacy, thanks for the tip. I'll do that.

Mrlocchoc, there are calculations and I'm not going to get into it but some Internet searching should produce the info. There are many factors that come into play such as chamber surface area and the surface area of the heating element itself.

To make it easy on me I simply made mine the same chamber dimensions as the paragon 24" and bought a replacement element from paragon.
 
Terminal connections on back oven for elements and thermocouple.

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Also look at the back with the wires connected and terminal cover installed.

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IT'S ALIVE!!! No sparks, smoke, fire or electrocution. I do have a problem with my 110v lighted switches though. They are constantly lit in both the on & off position. I'll need to sort that out.

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Now I need to pull the circuit into the garage.

It's also time to read the PID manual for the 6th time so I can learn the programming.

Cheers,
Jerid
 
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