free solar box cooker.pdf
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Thissolarcookerwasmadefromallrecycledfreematerial.
Itcanbeeasilybuiltinonehourandcanbeusedtobakebread,cooksouporstewandmanyotherthings.Thissolarboxcookerworksbestforfoodthatneedstobeslowlycookedformanyhours.
IliveinLaPazMexicowherethesunisverystronganditisveryhot.IbuiltthissolarovenbecauseIdidn'twanttoheatupmyhouseandIwantedagreenwaytocookwithoutusingelectricityorgas.
Thiscookerisgreatfortheenvironmentasitusesrecycledmaterialandallowsyoutocookwithrenewableenergy.
Keepinmindthisisasmallsolarcookerandcanonlybeusedtocooksmallamountsoffood.Solarcookingtakeslongerthanregularcooking.Forbreadyouneedtogetcloseto140Cduringpreheatforagoldenbrownloaf.Baketimesforbreadwillbeclosetodoublethatofconventionalovens.
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Step1:Findingmaterials
Belowisalistofmaterialsyouwillneedtobuildthissolarcooker.Mostofthesematerialscanbefoundinthegarbage.IwasluckyenoughtofindagreatpieceofglassinthegarbagethatfitquitewellovertheboxIhadfrommoving.
Materialsandtools
cardboardbox(easytofindinthegarbage)
blackpaper(orbackpaintthatisnontoxic)
pieceofglass
insulation(balledupnewspaper,fabric,fiberglass....)
aluminumfoil(orotherreflectivematerial)
glue(whiteorwoodglueworkswell)
scissors
glasscutter(optionalifrightsizeglassisfound)
Step2:Cuttingthebox
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(http://cdn.instructables.com/FVQ/OHIV/HWP88A3O/FVQOHIVHWP88A3O.LARGE.jpg)
(http://cdn.instructables.com/F2Z/U2Z1/HWP88AK3/F2ZU2Z1HWP88AK3.LARGE.jpg)
DIYHomeSolar:PlanningaSolarArray(Beginner'sGuide)(http://www.instructables.com/id/DIYHomeSolarPlanninga
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Itisimportanttofindaverytallboxsoitcanbecutdowntotherightsize.
Firstcutofftopflaps.Thenmeasuretheheightofthepotandcutthesizeoftheboxdowntoabout3inchesoverthepotheight.Leavetheboxsidesattachedsotheycanbeusedformirrors.
Theboxsidesshouldbefoldedback.Theboxshouldbetapedsothatitisstrong.
Itisimportantthatthesolarovenistherightsizeforthepotyouwanttouse.Theovenmustnotbetolargeasitwillbemoredifficulttoheat.
Step3:Creatingtheovenboxandinsulation
(http://cdn.instructables.com/FP1/7OB2/HWP88BRD/FP17OB2HWP88BRD.LARGE.jpg)
(http://cdn.instructables.com/FL3/7VGG/HWP88CMG/FL37VGGHWP88CMG.LARGE.jpg)
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Youcanusethetopflapstobuildanovenboxinsidethelargerbox.
Gluedarkpapertothetopflapsorpaintthemblackwithnontoxicpaint.Aflatblack,nontoxicandhighheatpaintcanbemadebymixingequalpartscharcoalpowder,whiteglueandwater.
Thelargeboxshouldbelinedwithinsulation(1to2inchesworkswell).Iusedsomefabricinsulationthatcanwithstandtemperatureover200C.Newspaperisoneofthebestfreeinsulationsbutmanyotherthingscanbeused.
Thebottomoftheovenshouldbemadefromascrapofwoodthatisalsoblackened.
Firstplacethebottomoftheovenontheinsulationandthenwedgethepiecesforcardboardoneachside.Asmallpieceofmaterialneedstoberemovedfromeachpieceofcardboardsoitwillfitintheboxwiththeinsulation.
(http://cdn.instructables.com/F4B/2TT1/HWP88FEY/F4B2TT1HWP88FEY.LARGE.jpg)
(http://cdn.instructables.com/FW8/AJLP/HWP88DZR/FW8AJLPHWP88DZR.LARGE.jpg)
(http://cdn.instructables.com/FE7/GY2G/HWP88G70/FE7GY2GHWP88G70.LARGE.jpg)
(http://cdn.instructables.com/FRI/0Y30/HWP88EBW/FRI0Y30HWP88EBW.LARGE.jpg)
http://cdn.instructables.com/F4B/2TT1/HWP88FEY/F4B2TT1HWP88FEY.LARGE.jpghttp://cdn.instructables.com/FW8/AJLP/HWP88DZR/FW8AJLPHWP88DZR.LARGE.jpghttp://cdn.instructables.com/FRI/0Y30/HWP88EBW/FRI0Y30HWP88EBW.LARGE.jpghttp://cdn.instructables.com/FE7/GY2G/HWP88G70/FE7GY2GHWP88G70.LARGE.jpg -
Step4:Makingthemirrors
Theflapswillnowbecoveredwithaluminumfoiltoformthemirrors.Thesemirrorswillfocusmorelightintotheoventoincreasethetemperature.
Firstcovertheflapinathinlayerofglueandthencoveritinaluminumfoil(makesuretheshinnysideisup).
Thisfirstdesigngotjustover100C.
Step5:Designupgrades
(http://cdn.instructables.com/FT5/4DFP/HWP88FNB/FT54DFPHWP88FNB.LARGE.jpg)
(http://cdn.instructables.com/FQC/S8O6/HWP88GHK/FQCS8O6HWP88GHK.LARGE.jpg)
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http://cdn.instructables.com/F2W/UGP1/HWP88GVZ/F2WUGP1HWP88GVZ.LARGE.jpghttp://cdn.instructables.com/FT5/4DFP/HWP88FNB/FT54DFPHWP88FNB.LARGE.jpghttp://cdn.instructables.com/FQC/S8O6/HWP88GHK/FQCS8O6HWP88GHK.LARGE.jpghttp://cdn.instructables.com/FDF/9DQ4/HWP88FYU/FDF9DQ4HWP88FYU.LARGE.jpg -
IwantedmoreheatforthesolarovensoIdecidedtoaddmoreinsulationandincreasethesizeofthemirrors.
Idoubledthefabricinsulationsothatitwasabout1.5inchesthick.
Ialsoaddedmoremirrorstotheexistingmirrors.Ijustcoveredmorecardboardinaluminumfoil.Ithenattachedthemtotheexistingmirrorflapswithclothespins.
Iwasabletogettheemptysolarovenupto149C.Thisshouldbeenoughforsomegoodcooking.
Step6:Testingtheoven,cookingpotato
(http://cdn.instructables.com/F8B/TLM7/HWP88HEP/F8BTLM7HWP88HEP.LARGE.jpg)
(http://cdn.instructables.com/FWP/9J4P/HWP88IUZ/FWP9J4PHWP88IUZ.LARGE.jpg)
(http://cdn.instructables.com/F7G/7H6V/HWP88JD1/F7G7H6VHWP88JD1.LARGE.jpg)
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NowIwasreadytotesttheoven.Icutupalargepotatoandputitinalargesoupcanwith1/2alitersofwater.
Icookedthepotatofor2hoursinstrongsunlight.Itestedthepotatowithaforkanditwasfullycooked.
Mydogreallyenjoyedeatingthissolarcookingtestfood!!
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Thisissonice,
Thankyou
Rima
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Theyworkgreatinthedesert.Theycanreallymakealotoffood.
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Nicejob!IreallywanttomakeoneoftheseandbringittoBurningMan.
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