Sears Craftsman 171.25450 Owner's Manual page 34

4) Atthis pointit will benecessary foryou to makea top back-upboard.Thereasons for thetop back-up boardareto minimize splintering
and to providesupportfor thetemplate. T hetop back-upboardis a scrappieceof woodhavingthefollowingdimensions:
LENGTH: 6"to 8",sufficientlengthso that it canclampedbythe topclampingbarand beusedmorethanonce;
WIDTH; 2 "widerthanthe widthof the projectsides;
THICKNESS: 1/8"to 1/4"thickerthanthethicknessof theprojectsides;this to prevent"ACCIDENTALLY" cuttinginto thedovetailbase,
This canalsobe accomplished by usingmorethan onepieceof scrapas longasthe resultantlength,widthandthicknessareasdescribed.
5) TOCUTCORNER # 10F THEPROJECT R IGHT SIDE,positionthetop back-up boardontopofthebasesothatitlinesopwiththe frontof
the baseandabutsto theright topstop blockasshownin figure58.
NOTE: B ACK UPBOARDS A REUSED TOMINIMIZE SPLINTERING O FPROJECT P IECES AND TOKEEP ROUTER BITFROM DAMAGING T HE
DOVETAIL FIXTURE,
Fig, 58 TOP BACK-UP BOARD \
\
AUXILIARY TEMPLATE \ TOP OFTHE BASE\ _ .
SUPPORT(ASNEEDED) \ _ _ _ _\_ / _ "_','-._
// \ ....\ ,., v
'k ,J
FRONTOFTHEBASE _ (( _._ .- _ _,L ,
FRONT I ACK'UP BOARD _ __
"OUTSIDE SURFACE' SHOULD BEVtSIBLE ONTHIS SURFACE I-
BEFORE POSITIONING THE FRONT BACK-UP BOARD
6) Lightly clampthe back-up boardin place,
7) Position the projectsideagainst t hefront of thebasesothat thetop surfaceabutsthe rightfront stop block.Theuseof a front back'up
boardat this step is alsorecommended. It is positioned between the projectsideandthe clamping baras shownin Figure58.Thefront back-
up boardshouldhavethefollowingapproximate dimensions:
LENGTH: 6"to 8",sufficientlengthsothat it canbeclampedbythefront clamping bar andbe usedmorethanonce;
WIDTH:1"to 2"widerthanthewidth of thesides;
THICKNESS: 1/4"to 1/2".
THEOUTSIDE OFTHEPROJECT SIDEFACES AWAY FROM THEFRONT OFTHEBASE.
TEMPLATE FOR
Fig. 59 TEMPLATE BRACKET
CLAMPING KNOBSI
j CLAMPING KNOB
\
WASHER
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