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Blue Hawk 7343 - Page 19

Blue Hawk 7343
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1 9
Lowes.com
14
Rate of feed
T h e p r op er r a t e of f eed d ep en d s on sev er a l f a ct or s: t h e h a r d n ess a n d moi st u r e con t en t of t h e
wor k p i ece, t h e cu t t i n g d ep t h , a n d t h e cu t t i n g d i a met er of t h e b i t . U se a f a st er r a t e of f eed wh en
cu t t i n g sh a l l ow g r oov es i n sof t wood s, su ch a s p i n e. U se a sl ower r a t e of f eed wh en ma k i n g d eep
cu t s i n h a r d wood s, su ch a s oa k .
14. Feeding too quickly
Clean and smooth nished cuts can only be achieved
wh en t h e cu t t er b i t i s r ot a t i n g a t a r el a t i v el y h i g h sp eed ,
t a k i n g v er y sma l l b i t es a n d p r od u ci n g t i n y , cl ea n - cu t
ch i p s.
F or ci n g t h e f eed of t h e cu t t er b i t f or wa r d t oo q u i ck l y sl ows
t h e R P M of t h e cu t t er b i t a n d t h e b i t t a k es l a r g er b i t es a s
i t r ot a t es. La r g er b i t es mea n l a r g er ch i p s a n d a r ou g h er
nish. This forcing action can also cause the router motor
t o ov er h ea t .
U n d er ex t r eme f or ce- f eed i n g con d i t i on s, t h e r ot a t i on ca n
b ecome so sl ow a n d t h e b i t es so l a r g e t h a t ch i p s a r e on l y
p a r t i a l l y cu t of f , ca u si n g sp l i n t er i n g a n d g ou g i n g of t h e
wor k p i ece.
T h e r ou t er wi l l ma k e cl ea n , smoot h cu t s i f i t i s a l l owed t o r u n f r eel y , wi t h ou t t h e ov er l oa d of f or ced
f eed i n g . F or ced f eed i n g ca n b e d et ect ed b y t h e sou n d of t h e mot or . T h e u su a l h i g h - p i t ch ed wh i n e
wi l l sou n d l ower a n d st r on g er a s i t l oses sp eed . H ol d i n g t h e r ou t er a g a i n st t h e wor k p i ece wi l l a l so
become more difcult.
15. Feeding too slowly
W h en t h e cu t t er b i t i s f ed t oo sl owl y , t h e r ot a t i n g cu t t er
b i t d oes n ot cu t i n t o n ew wood f a st en ou g h t o t a k e a
b i t e. I n st ea d , i t scr a p es a wa y sa wd u st - l i k e p a r t i cl es. T h i s
scr a p i n g p r od u ces h ea t , wh i ch ca n g l a z e, b u r n , a n d ma r
t h e cu t i n t h e wor k p i ece, a n d i n ex t r eme ca ses, ov er h ea t
t h e cu t t er b i t .
W h en t h e cu t t er b i t i s scr a p i n g i n st ea d of cu t t i n g , t h e
router is more difcult to control.
W i t h a l most n o l oa d on t h e mot or , t h e cu t t er b i t h a s
a t en d en cy t o b ou n ce of f t h e si d es of t h e cu t i n t h e
workpiece, producing a cut that has a rippled nish
i n st ea d of cl ea n , st r a i g h t si d es.
15
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