Prototype created by Oxbow Farm
Bill of Materials:
Item
Quantity
Cost (approximate)
1.75" Toprail Fence Tubing
38
$418
0.5" EMT Conduit
19
$41
0.75" EMT Conduit
10
$43
2" U-bolts
26
$28
2X2" Angle Iron
6
$138
1.75" brace bands
40
$26
1.5" carriage bolts and nuts
40
$11
4" carriage bolts and nuts
20
$13
4.5" eye bolts and nuts
8
$10
Gabion Basket wire roll
1
$32
Finned Super Stakes
8
$12
3 foot sections 0.125" Aircraft cable
16
$15
0.125" cable ferrules
32
$24
2" coated exterior screws
many
$25
Self-tapping screws
38
$8
1.75" Greenhouse Cross-Connectors
13
$20
10 foot 1X4" boards
20
$37
8 foot 2X4" boards
6
$30
8 foot 1X2" furring strips
22
$28
28 footX50 foot Greenhouse Plastic
1
$130
Metal Cut List:
Part
Stock
No.
Length
Holes
Bend?
Half Bow
Toprail Tube
26
10’
NA
YES
Arch Piece
Toprail Tube
13
5’
NA
YES
Ridge Pole
Toprail Tube
5
10’
NA
NO
Purlin
¾” EMT Conduit
10
10’
NA
NO
Wind Brace
1/2” EMT Conduit
12
10’
2
YES
Short Truss Piece
1/2” EMT Conduit
9
3.5’
NA
NO
Long Truss Piece
1/2” EMT Conduit
4
4.5’
2
NO
Endwall Brace
1/2” EMT Conduit
4
5’
2
NO
Long Rail
2X2 Angle Iron
4
20’
12
NA
Short Rail
2X2 Angle Iron
2
10’
8
NA
Rail Splice
2X2 Angle Iron
4
2’
4
NA
Wood Cut List:
Part
Stock
No.
Length
Hipboard
1x4
10
10’
Hipboard Splice
1x4
8
18”
Endwall Hipboard
1x4
4
4’
Endwall Anchor Brace
1x4
4
5’
Endwall Frame
1x4
8
6’
Peak Gusset
1x4 or plywood
2
18
Lintel
2x4
2
8’
Door Post
2x4
4
5.5’
Endwall Anchor
2X4
4
2.5’
Tools
Vital Tools
-
Drill Press for drilling holes in rails and brace pieces, I used a bench-top model and set it on the ground and used makeshift cribbing and the other pieces of angle iron to make a race to slide the rail being drilled.
-
Metal cutting device, I used an angle grinder and abrasive cutoff wheels.
-
Tubing Bender, I used the DY-12 bender from Lost Creek Greenhouse, the same or very similar bender is being produced by Lost Creek for Johnny’s and sold in their catalog. Usually Lost Creek has better shipping, it was free when I bought ours.
-
Small Tubing Bender for bending the “Gothic Arch” ,this you have to DIY. I will try and get info about this up soon but there are better methods than the way we did it.
-
Cordless Screwgun/Drill
-
Rugged flat surface for bending hoops
-
Flat surface for assembling hoops
-
Hammer
-
Heavy metal object with a flat surface to use as an anvil, an actual anvil would be awesome, a splitting wedge or splitting maul driven into a chunk of wood was what we used.
-
Metal marking punch
-
Drill bits
-
5/16ths ratchets and wrenches
Helpful Optional Tools
-
Fencing Tool
-
Vise-Grip pliers
-
Ratcheting Box wrenches (these really sped things up when we bought a couple)
Also see the wiki for the independent wheel assemblies
