How to Build a Parabolic Powerful Solar Stove for Cooking

Step-by-Step Guide

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   Step 1: Transportable in a regular station wagon car

   Keep doing that each 5 centimeters (2.0 in) away from each round until the half sphere is completed to the ground.,,,, Soak newspapers in the glue you choose to use without ruining them, than stretch them on the outer side of the parabola, until it's all covered, let it dry a day, than rotate it outside down and do the same inside, repeat outer and inner layers until you have some 10 layers total. reinforce the pipes area well.
   
   Allow to dry a few days, Impermeable the whole thing by painting it with waterproof paint., Cut it in two, and in between the two parts weld a L iron based frame 30 X 30 CM or larger, on which you will place the cooking pot, or the lava stone sheet to grill upon, etc, this is your stove surface. , This should do for reflecting a lot of sun., Make a support of 3 regular legs to bolt it beneath and another small support (the center of a rim that fits) to make the upper center to which you weld two pipes of 500 mm diameter 60 mm wall thickness 5 mm with their center on opposite sides and parallel among them. , You put two 100 mm long pipes of 100 out on the ends of the support and weld them to the 2 pipes coming from the rim on one side and the other two to the other pipe the opposite side.
   
   Block the outer support to the cooking support with nuts and bolts so your soup won't be in danger.
   
   Nor the whole support from the rim up rotates horizontally, and the parabola rotates around the central support.
   
   Done. ,,, Easy to make with a flex grinder and a welding machine.
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   Step 2: or on the rooftop of any car

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   Step 3: can be mounted in 15 minutes

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   Step 4: and on the cooking support there can be placed any light metal sheet oven of half a meter deep

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   Step 5: half a meter wide and half a meter tall

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   Step 6: in which can be cooked 3 large pizzas together

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   Step 7: or a water boiler of 30 liter (bunch of soup or stew) or a half a meter diameter pan (omelets and fried potatoes for a small army).

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   Step 8: Obtain need a sheet of plywood 10 mm thick 3 meters (9.8 ft) long and 1.6 meters (5.2 ft) wide.

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   Step 9: Determine on a side the exact center

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    Step 10: Screw in next to the edge a wood screw to it's half

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    Step 11: Take a wire or similar and tie it to the screw

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    Step 12: than stretch it to the opposite end of the plywood

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    Step 13: and 10 centimeters (3.9 in) before it reaches the edge tie in a pencil.Now you have the compass

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    Step 14: rotate the compass to reach the edge where the screw is bolted in

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    Step 15: so you draw your parabola form

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    Step 16: cut on the curved line with a saw or a powered pendulum saw and separate the 2 wood pieces.

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    Step 17: For the outer circle: Glue the straight edge on a piece of wide lumber or plywood to have it stand with the top of the circle up

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    Step 18: than you need to make it like a half pipe ditch all along the circular surface

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    Step 19: than take iron wire

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    Step 20: better if plastic coated

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    Step 21: 2 mm thickness

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    Step 22: and apply it in the ditch to form it in wire circle arcs.

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    Step 23: you need some 30 of them.

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    Step 24: Draw a 2.4 meters (7.9 ft) circle on the ground

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    Step 25: and all around it each 20 centimeters (7.9 in) place a nail to complete the circle

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    Step 26: than take wire arches you prepared and put each arch across the center to unite two nails

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    Step 27: until you covered all the circle and all the arches are overlapped on top.

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    Step 28: Tie the arches together like this: take a wire and close to the top start passing the wire below an arch

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    Step 29: above the next to it

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    Step 30: below the third one

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    Step 31: above the fourth

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    Step 32: and so on until you meet the beginning of your wire

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    Step 33: and tie them together

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    Step 34: than at 5 centimeters (2.0 in) distance outer

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    Step 35: tie them again

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    Step 36: where the first wire was passing above

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    Step 37: pass this one below

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    Step 38: and where it was passing below

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    Step 39: pass it above.

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    Step 40: Take away the nails and tie the tips of the arches around the last wire ring.

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    Step 41: Take a pipe diameter 80 mm or so

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    Step 42: wall thickness 2 mm or more

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    Step 43: cut two pieces of 150 mm each

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    Step 44: put them at the end of a 2500 mm long pipe diameter 75 mm and pass them through the sphere in between the last circle at the ground level and the one previous

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    Step 45: tie it well with wires that you will connect tying them hard to various knots on the sphere in the area

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    Step 46: the pipes must go out of the sphere 100 mm and in the sphere 50 mm

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    Step 47: if you can weld them to the wires is better.

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    Step 48: Where all the arches overlap

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    Step 49: inside the smaller circle tie

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    Step 50: cut all the arches in the center than tie them so the smallest circle for good

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    Step 51: take newspapers

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    Step 52: large quantity

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    Step 53: and acrylic glue (vinyl) for wood

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    Step 54: or better oralite (urea) based glue (the additive they put in the asphalt to harden it on the roads) since is waterproof.

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    Step 55: Check with the wood jugs out and in for perfection

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    Step 56: and use car quality putty or fiberglass resin to fill the gaps until the surface is smooth semi-spherical.

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    Step 57: Remember the 2 meters (6.6 ft) long pipe you used at point 7 to put in line the pipes in the sphere wall?

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    Step 58: Buy self sticking rolled mirror

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    Step 59: cut it in stripes of 2 centimeter (0.8 in) wide

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    Step 60: perfectly parallel using a sharp cutter and a metal ruler

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    Step 61: starting from the center to the edge put a stripe

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    Step 62: than 180 degrees put in continuation a second stripe

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    Step 63: than ASIDE put another stripe from edge to edge passing near the center

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    Step 64: same on the other side

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    Step 65: and so on until the whole sphere is covered

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    Step 66: make sure no air bubbles are left.

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    Step 67: Build the stand you need a rotating plate

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    Step 68: teh most common one for free or almost is a rear wheel from any car at the junk yard

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    Step 69: take it all

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    Step 70: brakes disk and caliper included

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    Step 71: it will help you to keep the stove blocked using the old parking brake system.

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    Step 72: The structure is nothing more than 4 quarter circle arches of 70 mm pipe thin wall (1

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    Step 73: 5 mm or 2 mm) you stick on the rim welded pipes and rotate under the parabola connection pipes where the central cooking support pipes are coming out.

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    Step 74: The lens legs are 4 bent pipes

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    Step 75: the support is a round bended square pipe welded with two lateral round pipes to connect to upper legs

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    Step 76: and a central diagonal to hold the pivoting pipe.

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    Step 77: The support has 2 legs detachable with horizontal metal sheets with holes so you can bolt on pivoting wheels

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    Step 78: and move the stove as you need.

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    Step 79: If you want to build it

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    Step 80: the elevating system is a simple gear anyone can cut with the flex grinder with two lateral welded discs to keep the gear connection of the half parables together alienated

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    Step 81: and can be turned with a pipe long one meter with the other end in a L shape.

Detailed Guide

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