For the past few years I've been making my own maple syrup, using techniques found here on Instructables, but I've been doing it the old fashioned way over an open fire. It has worked great for years, but this year I have tapped too many trees and therefore had a problem to solve.
How can I boil more efficiently.
So I took a look at my Mother-in-laws commercial evaporator, then went into my office to contemplate a solution, I should also say my budget for this build was exactly Zero (as usual)
I thought to myself "What would MacGyver Do?"
After Staring at paperclips and duct tape for far too long my eyes came to rest on my filing cabinet, and my hoarder genius mind went to work.
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Step 1: Gather Your Equipment
Here is what you need
One old metal filing cabinet
A circular saw or jigsaw
Drill and bits
A couple of old hinges
An old chimney pipe
A couple of hinges and hasps
Step 2: Start Cutting
I am not going to go into safety issues, but please use all your equipment responsibly.
Almost all the pictures in this instructable were taken by my five year old.
Lay your boiling pan on the top of your cabinet and mark the width and length (you could measure and draw but I am lazy)
Do not center the pan, you want to leave room to add the chimney
Take your circular saw and reverse the blade (this is a great trick for cutting metal and it's dangerous!)
Cut the opening out
A better tool for this is a jig saw, but I don't have any blades and I was working on a zero budget.
Step 3: Make Doors
I thought this would be super easy, I was super wrong.
Do not attempt to knock the doors off the drawers with a sledge hammer, you will only be able to dent and mess it up.
Using your circular saw, or a saws all cut the doors off the drawers.
Attach them to the filing cabinet using your hinges. I scavenged my hinges from the dump and could only find two, but if you are smart you will put two hinges on each door. Reinsert the bottom drawer, this will be your fire box.
Now attach a hasp to hold each doors closed.
Step 4: Add a Chimney and Drill Some Air Holes
For this I used an old waterheater chimney pipe. I had my daughter draw draw the circle around the base of the pipe, then I drilled a bunch of holes in the circle and made some X cuts across the circle and smashed it in with a sledge hammer.
Then I crammed the chimney in, and it was done! I didn't need any hardware to attach it's crammed in...
While I had the drill handy I drilled holes in the bottom of the cabinet and on the sides, just a dozen on each side.
Step 5: FIRE! FIRE! FIRE!
Yup this is the fun part! Make a fire to melt off any weird plastics and the paint. Just make a super hot fire and let it burn for a long time.
Super simple and loads of fun!
At this point DO NOT USE MAPLE SAP!
Just make a fire
Step 6: Now You're Done, Make Some Syrup!
Tap your trees
Collect 40 gallons of sap
Boil it down to 1 gallon
(temperature of 219 degrees)
I usually finish it on the stove so I don't overheat it.
Bottle it, sell it, hoard it!
Feed your kids, make sugar have fun and let me know how it goes!
This beast of an evaporator will last for a long time, feel free to improve the design, paint it with high temperature paint or recycle it and build a new one every year.
This indistructable MacGyver evaporator is being entered in both contests, maybe I'll win, vote for me and make some comments!
Either way get outside and make some syrup!
Runner Up in the
Jury Rig It! Contest
Participated in the
Participated in the