K79 Oven Build

[mrchipster]

Re: K79 Oven Build

I'm thinking of making the decorative arch out of standard brick with the keystone being a piece of granite with an L engraved in it. Something like this photo.

Now we know you were a Laverne and Shirley fan back in the 70's....

[K79]

Re: K79 Oven Build

Light up my oven this morning for 1.5 hours with my lamps. My floor averaged 115F and my dome peaked at 185F. I'll turn it back on at 4 when I get out of work and leave it on till 10.... we'll see what happens.

[K79]

Re: K79 Oven Build

Picked up 8 bags of this stuff to burry my oven in once my enclosure is up:

[chirobuggy]

Re: K79 Oven Build

looks like your curing process is going well. I like the idea of using lamps for the first leg of the cure. I was thinking I would use one of those BBQ charcoal lighter wands (the one that gets hot like a electric range top coil) but wasnt sure how hot that would take to temp in the oven.
I think I might follow your lead

[deejayoh]

Re: K79 Oven Build

Light up my oven this morning for 1.5 hours with my lamps. My floor averaged 115F and my dome peaked at 185F. I'll turn it back on at 4 when I get out of work and leave it on till 10.... we'll see what happens.

you can leave lights on 24/7. Your oven won't get too hot.

[K79]

Re: K79 Oven Build

Ok guys I just checked my oven after 4 hours of light and my floor was 165F and my dome was 235F and my cords were getting really soft and I could smell the rubber. I cut the power and plugged the door for now. I'll put the lights to her again tomorrow and hopefully put some fire in it this weekend if my torch comes in at Lowes!

[deejayoh]

Re: K79 Oven Build

I would look into briquets for your next step. They're cheap and I think it is easier to control the heat than with wood. I used sterno for the second step, but it doesn't really get hot enough to do much curing. Bag of kingsford is pretty cheap.

[K79]

Re: K79 Oven Build

I would look into briquets for your next step. They're cheap and I think it is easier to control the heat than with wood. I used sterno for the second step, but it doesn't really get hot enough to do much curing. Bag of kingsford is pretty cheap.

Not a bad idea. You think 4 hours at 235F ish is enought and put in some briquets to 300F tomorrow for about 6 hours?

[UtahBeehiver]

Re: K79 Oven Build

K79,

I also agree with DJ on heat beads.

[deejayoh]

Re: K79 Oven Build

Yeah, I would say keep it 300-400. Slow & low is good, but I think where you run into the most problems is when you let the heat spike up quickly. But at the end of the day cracks don't matter so much. It's like getting a door ding in a new car. Seems like a big deal, but the car still drives fine.

[Sharkey]

Re: K79 Oven Build

Using a halogen light, then heat beads / briquettes before lighting your first low fire seems to be the standard curing method these days. It worked well for me - I only got a small hairline crack.

I like the analogy comparing a crack to a ding in your car door. You will curse when you first see it and you can patch it up as best you can but in the end it won't have any effect on performance.

[K79]

Re: K79 Oven Build

Kingsford is in the garage. Ill use that tomorrow and try and keep it below 350F for at least 6 hours tomorrow.

[K79]

Re: K79 Oven Build

Light the charcoal at 5 am. At 7 am I was just over 200F. Definitley going slow.



Exciting to see smoke coming out my vent. I'ld say about 95% is coming out the arch. Hopefully almost all of it will with the chimney on !



Here's my vermiculite. Look like the right stuff? The guy at the hardware store knew less about it than me. In fact it was in the back of the warehouse and not even in their computer anymore. I got a heck of a good deal on it

[stonecutter]

Re: K79 Oven Build

Wow that's very fine particles...nothing like what I have used in the past. But since you aren't depending on it for insulation it should tool out nicely over that blanket.

[K79]

Re: K79 Oven Build

Wow that's very fine particles...nothing like what I have used in the past. But since you aren't depending on it for insulation it should tool out nicely over that blanket.

Well I sort of am depending on it for insulation. I mean I have 3" of fiber blanket on the oven, but I was hoping this would also add some insulating factors. Check out post #423... it says it reduces heat transfers by 50%. I hope its ok???