Author Topic: Black Decker 20V  (Read 2942 times)

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Offline Philbert

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Re: Black Decker 20V
« Reply #20 on: March 17, 2016, 01:52:09 pm »
Making sure I am thinking right, but isnt  4.5mm = 11/64 file?
Thanks for catching that!  Math in my head is not as fluid as it used to be!

I mean to say 5/32 on Type 91 chain, which would mean that the 'next size up' is 11/64 on Type 90 chain.  I try to think of common saw chain file sizes in 32's of an inch, but 1/8 was too low of a starting point - though it might be used as grinding wheel thickness. 11/64 and 13/64 are the more common, 'in-between' sizes.

4/32 (1/8); 5/32; 11/64; 3/16 (6/32); 13/64; 7/32; 1/4 (8/32).

1/8 is approximately 3.16 mm.
9/64 is approximately 3.5 mm.
5/32 is approximately 4.0 mm.
11/64 is approximately 4.5 mm.
3/16 is approximately 4.8 mm.
13/64 is approximately 5.16 mm.
1/4 is approximately 6.3 mm.
5/16 is approximately 8.0 mm.

Good reference:  https://www.pferdusa.com/info/PDF/CSF.PDF

Philbert
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