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21 mm bit?

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Forum topic by Sawdust2012 posted 01-24-2014 06:34 PM 693 views 0 times favorited 7 replies Add to Favorites Watch
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Sawdust2012

82 posts in 878 days


01-24-2014 06:34 PM

I have a turning project that calls for a 21 mm bit. I cant seem to find one anywhere. One site has a 21.3 mm Forstner bit. Is that close enough?


7 replies so far

View mondak's profile

mondak

69 posts in 1566 days


#1 posted 01-24-2014 06:41 PM

Do a search on the net for W L FULLER INC
They manufacture bits etc and will send you to one of their retail outlets.

View Texcaster's profile

Texcaster

979 posts in 839 days


#2 posted 01-24-2014 06:45 PM

19mm is also hard to find. I ground a spade bit to suit. I take a deep breath every time I have to use it.

-- Bill....... " was you dryin' your nails or a wavin' me goodbye?" Tom Waits

View Tedstor's profile

Tedstor

1624 posts in 1798 days


#3 posted 01-24-2014 06:50 PM

A 13/16” might be easier to find and would be only slightly smaller.

View HillbillyShooter's profile

HillbillyShooter

5634 posts in 1458 days


#4 posted 01-24-2014 06:53 PM

Check out Woodcraft—I’ve ordered several miscellaneous metric sizes.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View CampD's profile

CampD

1346 posts in 2652 days


#5 posted 01-24-2014 07:01 PM

The real questions you should ask yourself is; What is this bit needed for? What will be put through the hole?
Will you apply a finish? if so a 21.3 bit would work fine once a finish is applied.
Or else you could just use a 27/32 bit

-- Doug...

View PaulDoug's profile

PaulDoug

923 posts in 869 days


#6 posted 01-24-2014 07:12 PM

13/16” (0.8125) (—0.0143)
21mm (0.8268)

Info from: http://www.penventory.com/inv.pl

-- “We all die. The goal isn't to live forever; the goal is to create something that will.” - Chuck Palahniuk

View WayneC's profile

WayneC

12641 posts in 3263 days


#7 posted 01-24-2014 07:12 PM

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