Genesis GBG600L - Grinding Specific Materials; Grinding Material Restrictions; Sharpening Lawn Mower Blades; Sharpening Twist Drill Bits

13
English
 WARNING: Never sharpen or grind anything made of or containing
aluminum or magnesium.
Becausegrinderscanremovematerialrapidly,afreshlydressedwheelandtheamountofworkpiece
pressureappliedtothewheelarekeystoefcientgrinding.Usethefollowingbasicguidelinestoaid
inworkingmetalsandavoidoverheating:
• Neverforcetheworkpieceagainstthegrindingwheel.
• Alwayskeeptheworkpiececonstantlymovingagainstthegrindingwheelwithlightpressure
andevenmotion.
• Keeptheworkpiececoolbymaintainingacontainerofwaternearbyfordippingthework
piece.
• Alwaysusethefaceofthegrindingwheelwiththewheelmovingdownward,intotheobject
beingworked.
• Donotperformgrindingoperationsonthesideofthewheel.
Lawn Mower Blades
Asyoupreparetosharpenthelawnmowerblade,ensurethereisadequateworkingspaceto
maneuvertheblade.Lawnmowerbladesaregenerallysharpenedonthebeveledsideandthen
dressedupslightlyontheothersidewiththegrinderorle.
Firstremoveanynicksthatmaybepresentonthecuttingedgebyrestingthebladeatonthetool
rest,movingthebladesidetosideuntiltheedgeisnickfree.Tosharpenthebevel,eitheradjustthe
toolrestangletomatchtheblade’sbevelangleorholdthebladeatthebevelanglewhilerestinga
portionofthebladeonthetoolrestforaddedstability.Usealighttouch,removingaslittlemetalas
possibletoattainthedesirededge;thenlightlydress-uptheatbacksideoftheblade.Ideally,lawn
mowerbladesshouldnotbehonedtorazorlikesharpness;thisincreasesthelikelihoodofnickingand
promotesrapiddulling.Usealeorthebenchgrindertolightlyfacethecuttingedge.
Afterthebladehasbeensharpened,besuretochecktheblade’sbalancewithanappropriateshop
madejigorcommerciallyavailableunit.Balancethebladebyprogressivelyremovingmetaluntil
balanceisattained.
 WARNING:An unbalanced lawn mower blade may cause excessive
vibration, causing damage to the mower and engine shaft.
Sharpening Twist Drill Bits:
Sharpeningtwistdrillscanbeatrickyoperationthatevensomeexperiencedmechanicsnevermaster.
Sharpeningtwistbitsfreehandwillrequireconsiderablepracticeanddryrunswiththegrinder
"OFF"toacquiretheskillofrotatingthebitwhilemaintainingtheoriginalcuttingedgeangle.Ifyou
anticipatesharpeningnumerousbitsconsiderpurchasingaspecializedsharpeningjig,availableat
mosthardwareandhomecenters.Atypicaltechniqueforsharpeningatwistdrillbitisasfollows:
1.Setthegroovedtoolresthorizontaltothefaceofthegrindingwheel.
2.Holdthedrillshankbetweenthethumbandindexnger,restingthebackoftheindexngeronthe
toolrest.
3.Besurethatthecuttinglipisstraightacrossthefaceofthewheelbeforebeginningeachstroke
4.Whenthedrillcontactsthewheel,pushthedrillshankdownwardandtotheleftataslightangle.At
thesametime,rotatethedrillsotheotherlipisjustvisible.
5.Repeatthisprocessontheotherliptosharpentheentiretwistdrill.