Subject: Q: hole saw arbor

From: [email-masked] (Rooster)
Date: Sat, 14 Dec 1996 04:45:26 GMT

--- begin undecipherable ranting ---

this ques concerns a Milwaukee 7055 "quick change" hole saw arbor.  It is
a large arbor with drive pins that engage drive holes in the back of the
saw.  

this is confusing to explain, but if you screw the saw all the way down to
the flange, the drive pins don't line up.  If you loosten the saw 1/4-1/3
turn, the pins line up, but now the saw is a bit loose.

is there a way to have the saw tight against the flange AND engage the
drive pins?

many will testify that i have been whacked in the head a few times too
many, but i just don't see how you get this thing to work.  all that money
i paid for college, you'd think they would have taught me this.

--- rant off ---

thanks in advance for any help.

rooster

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From: "Randy R. Cox" <[email-masked]>
Date: Sat, 14 Dec 1996 07:53:25 -0600

> thanks in advance for any help.

 <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>> <<>>

Howdy Rooster,

Don't worry about the looseness, the pins are designed to prevent the
hole saw from getting too tight against the mandrel.  It'll work!  In my
work as an IBEW electrician, we use such hole saws all the time, cutting
up to six inch holes (there are better ways to cut six in holes).  Not
all mandrels have the two pins, so be thankful.  Hole saws by nature
wear out quickly, and it is sometimes almost impossible to get a worn
out saw off a mandrel that doesn't have pins, or worse, off a mandrel
where the user tightened the saw ignoring the pins.  Sometimes, you just
have to throw the mandrel away as it gets broken in the process of
removing the old "super tight" saw.

Randy

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From: "Gerry McLaughlin" <[email-masked]>
Date: 15 Dec 1996 06:05:22 GMT

The saw should not be tight against the flange. If it was tight, when you
were done cutting
your hole, the saw would be V E R Y tight! Hard to remove etc. etc.
We use these things at work to drill holes in Luminaire poles. Sometimes
guys don't engage the
drive pins. End up messing the whole thing up in a vice trying to remove
the saw later.
Hope this helps.

Rooster <[email-masked]> wrote in article <[email-masked]>...