TheHonestGuidetoChoosingaJuicerInthe1930'sachapcalledDrNormanWalkerinventedajuicerwhichfirstlygratedandthencutproduce.Theresultingmasswasthentobeputintoalinenbagandplacedunderahydraulicpress,directingjuicedownaspout.(DrWalkerlivedto108yearsofage-hediedinasurfingaccident).Youcanstillpurchasethis2-stage"Norwalk"machineforaround$2000,whichisaveryprohibitivepriceindeed.Andmostofthejuicersyouwillfindonsalehaven'tevolvedmuchsincethen,whichbringsusto...Centrifugaljuicers.Centrifugaljuicersworkbyusingaflatcuttingbladeonthebottomofarapidlyspinningstrainer.Cutproduceisflungoutoverthesidesofthestrainer.Duetothecentrifugalforce,juicethenpassesthroughtinyholesinthestrainer.Featuresintrinsictothisdesigninclude:􀁺ThestrainersareHUGEandapaintoclean􀁺Thecuttingbladesaretrickytocleanandsomeareparticularlydangeroustohandle􀁺Theprocessincorporatesmassoxidizationandthereforea'dying'andbrownjuice􀁺Thereisalotofunpleasantfroth􀁺Leafygreenvegetablesareimpossible,sonoherbsandnowheatgrass􀁺Pulpbuildsupinthestrainerandefficiencyfallsrapidly􀁺Thecentrifugalforcepushesalotofpulpthroughthestrainer,resultinginalotofpulpinthejuice􀁺Thesejuicerscanseriouslydamageyourhearing,andwon'tbepopularinaterracedhouseorflat,orifanyoneisstillinbedUltimately,thetechnologyinsideacentrifugaljuicerisnotunlikethatofatreecutter.They'respinningatupto10000rpm.Theresultingfrictionalheatisnotgoodforyourjuice.Neitheris10000rpmaneasytaskforamotorwhenunderconstantresistance.Theamountyoucanspendonacentrifugaljuicervariesfrom£30toover£100-sowhatareyoupayingfor?Well,intruth,mostlybrandnameandaestheticdesign.Whilethecheapestofmachinesarecertainlyweekheartedandnotgoingtolastyoulong,experienceandfeedbacktellsusthatmoreexpensivemachinesdon'tnecessarilylastanylonger.Infact,ifeveryonewhoboughtajuicerusedtheirmachineeverydaywethinknearlyeverymachineonthemarketwouldbewithdrawnbecausewithdailyusagevirtuallyallmachineswouldfailwithintheirfirstyear,letalonewithinwarranty.Thisguidehasbeenwrittenasaresultofthecumulativeexperienceofsever