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Danielb
01-22-2020, 02:30 PM
I started my own oil tank evaporator last week.

I picked up some plastic spiles with buckets and lids last year, about halfway through the season, and decided for ****s and giggles I would put a few taps in, which progressed to 11 taps in the yard. I hadn't planned any for making any syrup until that point, so I had to throw together what I could to make do.
After boiling on an old cast iron wood stove with 2 canning pots, I decided I wasn't going to wait until the last minute and fall short again.
I don't know if it is just the fact that Canadian oil tanks are narrower than our neighbours to the south, or if I just couldn't find the right tank, but after looking at about 30 different old tanks, I chose one that the father-in-law had, which was .100 wall, rather than the others I had seen, which were about .080 wall.
Fairly standard build for the most-part, cut the top back 4', welded in 2x2x1/8 angle around the sides. The only thing i had to really do that was special was section the tank in half, and weld in a 4" strip, to take it from 23" wide to 27" wide, so allow for a full 24" pan, and room for insulation and brick, or cement board.
I cut out a door opening that once finished is 13 1/2" x 13 1/2", so as to give me lots of room to load the fire.
Cut out the back section of the bottom, to lighten it up, and skinned a small ramp.
I cut the top for the flue pipe it, welded in 1/8" plate, cut a 7" hole, and made a ring out of .100 steel. My father-in-law has some 7" stainless pipe that I will.be using, and I have a 7" insulated roof section to go with that.

I have to pick up a little more steel, hopefully I will have that tomorrow or Friday, so next week I can finish up. I have to skin the back portion of the bottom, build an ash door opening and door, and the main door. After that, I will use stone wool insulation, either 1 1/4" or 1 1/2", whichever is easier to get for now, and then line the fire box with cement board, as a temporary covering, until next year, hopefully.
After that, I need to line up some stainless and start my pan(s).

Sugarmaker
01-22-2020, 04:51 PM
I like it, keep moving! A good way to get this done is to go tap the trees. Then you HAVE to get it ready to boil. Not sure of your pan design, but that can suck up a bunch of time too.
Keep boiling!
Regards,
Chris

Danielb
02-10-2020, 06:19 PM
I have been beating away at things when time allows, and have finally pretty well finished up the arch build. All that is left is some sort of draft adjustment for the ash door.
I used 1.5" rock wool insulation to insulate, and for this year I used 1/2" cement board in the fire box, high-temp
siliconed to the insulation.
Door is sealed with 3/8" stove door gasket. I Used 1/2" cold rod for the latch arm, and siliconed an old screwdriver handle on for comfort.
Tomorrow the hope is to head to the wife's grandfathers shop, and get cutting some steel. I picked up 2 sheets of 22ga 304 mill finish. My plan is for a 32" flue pan, I'm going to cheat if I can by making a zigzag bottom, so.my 24" wide pan should have 52" of width, which should give me around 11gph in the back pan, the front pan will be a divided 16x24.
207532075420755

Danielb
02-11-2020, 03:41 PM
I moved the "arch" into it's new home today. It isnt much, just a crooked old shed we have on the property, so I am really thankful for the adjustable feet I put on the legs.
Stainless 7" stack is installed too 20767

tbear
02-11-2020, 06:10 PM
That's a neat looking rig! Good job! Ted

Pdiamond
02-11-2020, 07:08 PM
That is a fancy looking oil tank arch. Are you planning on placing cement board or metal on the floor to catch embers that fall out of the arch when you are feeding the fire? This should be something to consider as a precaution. don't forget a bucket of sap and a fire extinguisher.

Danielb
02-12-2020, 04:46 AM
That is a fancy looking oil tank arch. Are you planning on placing cement board or metal on the floor to catch embers that fall out of the arch when you are feeding the fire? This should be something to consider as a precaution. don't forget a bucket of sap and a fire extinguisher.

Yes, i have some .012" stainless that i plan to lay down around the front.

Cjadamec
02-12-2020, 05:39 AM
Very nicely done. I wish my oil tank looked that nice.

Do you plan on adding any forced draft to the firebox? You may find you need a little more heat to your fire to get the back of your rig to solid boil.

What are your plans for pre-heating sap?

Danielb
02-12-2020, 03:09 PM
20786
Pan progress

buckeye gold
02-12-2020, 03:40 PM
Daniel, while your fabricating put a channel for a drain at one end of those flues. You'll be glad you did.

Danielb
02-12-2020, 04:13 PM
Daniel, while your fabricating put a channel for a drain at one end of those flues. You'll be glad you did.
My end panels will give me the channel for the ends, it will be 2" wide at both ends.
I have a buddy with a welding shop who offered to weld it up for me in trade for supplying the stainless and bending him a bottom for his pan for next year. I was going to weld them myself but I have no experience with TIG welding.

Danielb
02-12-2020, 04:18 PM
Very nicely done. I wish my oil tank looked that nice.

Do you plan on adding any forced draft to the firebox? You may find you need a little more heat to your fire to get the back of your rig to solid boil.

What are your plans for pre-heating sap?

This year forced draft is out of the question. I have no power in my shack where it sits, but we are planning to relocate it, or build a better, more permanent building later this year. I know I will suffer in my boiling capacity, but it is what it is for now.
For preheating, I am going to see about wrapping some copper around the stack if I have the time this year.
The plan for tomorrow is to drop off my flue pan to my buddy to weld it up, then bend up my float box and syrup pan. I will probably weld those up myself, where they arent going to be so complicated.

Danielb
02-25-2020, 01:33 PM
I am still waiting on my.flue pan to be finished, my welder buddy has been busy, and hasn't had the chance to finish welding it up, so I made due with what I had.
I welded my syrup pan myself, it was my first go at TIG welding, so it isnt pretty, but is doesnt leak. I had to out in a couple of steam pans in the back to fill up the arch, and got boiling today finally. My first run of sap has yielded me about 30-35 galling of 2.5% sap, so I should have it boiled town by later this evening.21025

Danielb
03-02-2020, 02:51 PM
Got my pans all together, and added my float boxes today. I have about 30 gallons stored from sunday, now I just wait for tomorrow's run and hope I have enough to fire up and try to start a gradient. 21101

Pay no attention to the appearance of the arch being badly out of level. The building isn't. Arch is.

Big_Eddy
03-02-2020, 07:02 PM
Looking Good!!
Nothing better than the first steam off your self-built evaporator.

snakes14009
03-03-2020, 11:27 AM
Man good looking rig.