In the latest issue of Shop Notes, one of the tips is to put a dab of
silicone caulk on the end of router bit shafts to prevent them from
bottoming out in the router. Esentially, making a small silicone "stopper"
on the end of the router bit shaft.
Couldn't this be potentially bad for the router because the silicone could
put the bit out of balance? Granted, it would be just a little out of
balance, but since they spin at a bazillion MPH (it seems), I think it would
be a bad idea. It's not that difficult to keep them from bottoming out.
Anyone else see this and/or have an opinion?
Mike Dembroge
tip in some other current WW mag was to use small piece of 1/4" vinyl
tubing to prevent the "flare of the router bit from being engaged by the
collet. one foot would slice up into a bunch of spacers.
BRuce
Mike Dembroge wrote:
> In the latest issue of Shop Notes, one of the tips is to put a dab of
> silicone caulk on the end of router bit shafts to prevent them from
> bottoming out in the router. Esentially, making a small silicone "stopper"
> on the end of the router bit shaft.
>
> Couldn't this be potentially bad for the router because the silicone could
> put the bit out of balance? Granted, it would be just a little out of
> balance, but since they spin at a bazillion MPH (it seems), I think it would
> be a bad idea. It's not that difficult to keep them from bottoming out.
>
> Anyone else see this and/or have an opinion?
>
> Mike Dembroge
>
>
--
---
BRuce
There are two scenarios here that need to be addressed:
1. The shaft of the bit is longer than the depth of the hole in the router
shaft.
In this case the bit needs to be prevented from bottoming out hard.
Installing an O-ring with an o.d. equal to the i.d. of the router shaft at
the
bottom of the router shaft cures this. If a bit bottoms out there's still
enough
"give" for the collet to pull the bit down a slight amount when it is
tightened.
2. The shaft of the bit is not long enough to bottom out but if it is not a
straight
bit there will be a fillet where the bit shaft meets the cutter head.
This is where putting an O-ring with an i.d. equal to the bit shaft o.d.
on the
bit shaft to prevent the collet fingers from trying to tighten up on the
fillet.
I hope my 2 cents helps. ;-)
ARM
Ron Magen wrote:
> CW -
> I hope you're not 'trolling' ?
>
> Anyway, the idea is to use an 'O' ring that fits the shank of the bit
> somewhat snuggly.
> 1- put the ring on the shaft and 'roll' it right up to the cutter
> 2- insert the bit till it 'bottoms out'.
> 3- raise the bit a 16th or so for 'clearance'
> 4- hold the bit in place with side pressure from your fingers, and roll the
> ring down to the chuck
>
> That's it; that's all there is to it. Adjust the 'technique' depending on
> the length of your bits & the depth of your chuck.
>
> Regards & Good Luck,
> Ron Magen
> Backyard Boatshop
>
> "CW" <[email protected]> wrote in message
> news:HFLbb.408362$Oz4.199007@rwcrnsc54...
> > How is a o ring around the shank suposed to help?
> > "Bob G" <[email protected]> wrote in message
> > news:[email protected]...
> > >
> > >
> > > Courtney Mainord wrote:
> > >
> > > > An "O" ring around of the shaft of the router bit will keep the bit
> > from
> > > > bottoming out and you won't need to hold
> > > > up on the bit.
On Sun, 14 Sep 2003 15:57:58 GMT, Phisherman <[email protected]> wrote:
>When I insert a router bit, I purposefully bottom it out, then back it
>out a tiny amount just before tightening it. Isn't that the proper
>procedure anyway?
Yeah, but when you need one hand to hold the router, one hand to
operate the wench er.. wrench and one hand to hold the bit up that
tiny amount you seem to run out of hands before the job gets done.
Tim Douglass
http://www.DouglassClan.com
or just tighten the bit by hand, then pop it up
a smidgeon with the wench, I mean wrench, before
final tightening.
--
Cheers
Nuno Souto
[email protected]
"Courtney Mainord" <[email protected]> wrote in message news:[email protected]...
> An "O" ring around of the shaft of the router bit will keep the bit from
> bottoming out and you won't need to hold
> up on the bit.
> "Tim Douglass" <[email protected]> wrote in message
> news:[email protected]...
> > On Sun, 14 Sep 2003 15:57:58 GMT, Phisherman <[email protected]> wrote:
> >
> > >When I insert a router bit, I purposefully bottom it out, then back it
> > >out a tiny amount just before tightening it. Isn't that the proper
> > >procedure anyway?
> >
> > Yeah, but when you need one hand to hold the router, one hand to
> > operate the wench er.. wrench and one hand to hold the bit up that
> > tiny amount you seem to run out of hands before the job gets done.
> >
> > Tim Douglass
> >
> > http://www.DouglassClan.com
>
>
Tim Douglass <[email protected]> wrote in message news:<[email protected]>...
> On Sun, 14 Sep 2003 15:57:58 GMT, Phisherman <[email protected]> wrote:
>
> >When I insert a router bit, I purposefully bottom it out, then back it
> >out a tiny amount just before tightening it. Isn't that the proper
> >procedure anyway?
>
> Yeah, but when you need one hand to hold the router, one hand to
> operate the wench er.. wrench and one hand to hold the bit up that
> tiny amount you seem to run out of hands before the job gets done.
I've never noticed a problem with it. I set the routah (PC-690) on
its side on my bench, put the bit in so it bottoms out, pull it back
out just slightly, and then hand-tighten the collet nut. Then I set
one wrench around the bottom nut, lean that wrench handle against my
benchtop, and engage the top wrench and tighten by pushing down
against the wrench that's supported by my bench.
I do a final check by putting the routah on it's head and grabbing
the two wrenches in the palm of my hand and squeezing (i.e., levering
them against each other).
I'm no routah expert (in fact, I don't like using the thing), but
in the time I've been using one, I've had zero skinned knuckles and no
bits fly across the shop, or break or "self-adjust".
Chuck Vance
What you described could be done just as easily without the O ring. As
described, it is just along for the ride.
"Ron Magen" <[email protected]> wrote in message
news:[email protected]...
> CW -
> I hope you're not 'trolling' ?
>
> Anyway, the idea is to use an 'O' ring that fits the shank of the bit
> somewhat snuggly.
> 1- put the ring on the shaft and 'roll' it right up to the cutter
> 2- insert the bit till it 'bottoms out'.
> 3- raise the bit a 16th or so for 'clearance'
> 4- hold the bit in place with side pressure from your fingers, and roll
the
> ring down to the chuck
>
> That's it; that's all there is to it. Adjust the 'technique' depending on
> the length of your bits & the depth of your chuck.
>
> Regards & Good Luck,
> Ron Magen
> Backyard Boatshop
>
>
> "CW" <[email protected]> wrote in message
> news:HFLbb.408362$Oz4.199007@rwcrnsc54...
> > How is a o ring around the shank suposed to help?
> > "Bob G" <[email protected]> wrote in message
> > news:[email protected]...
> > >
> > >
> > > Courtney Mainord wrote:
> > >
> > > > An "O" ring around of the shaft of the router bit will keep the bit
> > from
> > > > bottoming out and you won't need to hold
> > > > up on the bit.
>
>
CW -
I hope you're not 'trolling' ?
Anyway, the idea is to use an 'O' ring that fits the shank of the bit
somewhat snuggly.
1- put the ring on the shaft and 'roll' it right up to the cutter
2- insert the bit till it 'bottoms out'.
3- raise the bit a 16th or so for 'clearance'
4- hold the bit in place with side pressure from your fingers, and roll the
ring down to the chuck
That's it; that's all there is to it. Adjust the 'technique' depending on
the length of your bits & the depth of your chuck.
Regards & Good Luck,
Ron Magen
Backyard Boatshop
"CW" <[email protected]> wrote in message
news:HFLbb.408362$Oz4.199007@rwcrnsc54...
> How is a o ring around the shank suposed to help?
> "Bob G" <[email protected]> wrote in message
> news:[email protected]...
> >
> >
> > Courtney Mainord wrote:
> >
> > > An "O" ring around of the shaft of the router bit will keep the bit
> from
> > > bottoming out and you won't need to hold
> > > up on the bit.
How is a o ring around the shank suposed to help?
"Bob G" <[email protected]> wrote in message
news:[email protected]...
>
>
> Courtney Mainord wrote:
>
> > An "O" ring around of the shaft of the router bit will keep the bit
from
> > bottoming out and you won't need to hold
> > up on the bit.
> > "Tim Douglass"
> =======================================
> When did you meet my Dad...? lol
>
> He is now long gone but years ago I was in my shop "playing" when he
> stopped by the house and suggested using a small "o" ring...
>
> That was
> 30 or so years ago and I have been using "o" rings ever since..and leave
> them on the bits...
>
> Bob Griffiths
>
On Sun, 14 Sep 2003 08:02:45 GMT, "Groggy" <[email protected]>
pixelated:
>Silicon blobs will get knocked off and fly around the shop like flubber. Use
>an 'O' ring instead, if you're that worried about it. Should be able to get
>a packet for a dollar or so from any gardening department.
Uh, Grogs, HOW will the little silicone blob fly off the
tip of the shaft--which is now buried inches deep in the
collet and motor shaft of the routah?
O-ring it is.
---
-If thy poster offends thee, *PLONK* it out.-
http://diversify.com Comprehensive Website Development
On Sun, 14 Sep 2003 03:31:24 +0000, Mike Dembroge wrote:
> In the latest issue of Shop Notes, one of the tips is to put a dab of
> silicone caulk on the end of router bit shafts to prevent them from
> bottoming out in the router. Esentially, making a small silicone "stopper"
> on the end of the router bit shaft.
>
> Couldn't this be potentially bad for the router because the silicone could
> put the bit out of balance? Granted, it would be just a little out of
> balance, but since they spin at a bazillion MPH (it seems), I think it would
> be a bad idea. It's not that difficult to keep them from bottoming out.
>
> Anyone else see this and/or have an opinion?
An O-ring of the proper size in the bottom of the collet.
-Doug
Considering the very low weight of a dab of silicone that small and as close
to center that it would have to be, it would have no noticeable effect. It
would work but is more trouble than it is worth. You're right, it's not that
hard to keep the bit off the bottom. A lot of the tips I have seen in
magazines were obviously included not because they were a good idea but more
because they have space to fill.
"Mike Dembroge" <[email protected]> wrote in message
news:[email protected]...
> In the latest issue of Shop Notes, one of the tips is to put a dab of
> silicone caulk on the end of router bit shafts to prevent them from
> bottoming out in the router. Esentially, making a small silicone "stopper"
> on the end of the router bit shaft.
>
> Couldn't this be potentially bad for the router because the silicone could
> put the bit out of balance? Granted, it would be just a little out of
> balance, but since they spin at a bazillion MPH (it seems), I think it
would
> be a bad idea. It's not that difficult to keep them from bottoming out.
>
> Anyone else see this and/or have an opinion?
>
> Mike Dembroge
>
>
Courtney Mainord wrote:
> An "O" ring around of the shaft of the router bit will keep the bit from
> bottoming out and you won't need to hold
> up on the bit.
> "Tim Douglass"
=======================================
When did you meet my Dad...? lol
He is now long gone but years ago I was in my shop "playing" when he
stopped by the house and suggested using a small "o" ring...
That was
30 or so years ago and I have been using "o" rings ever since..and leave
them on the bits...
Bob Griffiths
On Sun, 21 Sep 2003 02:09:31 GMT, "Courtney Mainord"
<[email protected]> wrote:
>An "O" ring around of the shaft of the router bit will keep the bit from
>bottoming out and you won't need to hold
>up on the bit.
Exactly the same thing you are trying to do with the little blob of
silicone the OP was commenting on. I suspect that many times the shaft
on a bit isn't long enough for the silicone trick to work, but it
might in many cases. My only real concern with that idea is how do you
dig the little piece of silicone out of your collet after it detaches
from the bit, as I'm sure it would for me. I like the o-ring idea
better, but the silicone one is still a valid thought.
Tim Douglass
http://www.DouglassClan.com
"Larry Jaques" ...
> Uh, Grogs, HOW will the little silicone blob fly off the
> tip of the shaft--which is now buried inches deep in the
> collet and motor shaft of the routah?
Bad comprehension day. I read what he wrote then answered what I thought
(thinking he mean't apply a blob near the top of the shaft near the cutter).
>
> O-ring it is.
Still.
An "O" ring around of the shaft of the router bit will keep the bit from
bottoming out and you won't need to hold
up on the bit.
"Tim Douglass" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 14 Sep 2003 15:57:58 GMT, Phisherman <[email protected]> wrote:
>
> >When I insert a router bit, I purposefully bottom it out, then back it
> >out a tiny amount just before tightening it. Isn't that the proper
> >procedure anyway?
>
> Yeah, but when you need one hand to hold the router, one hand to
> operate the wench er.. wrench and one hand to hold the bit up that
> tiny amount you seem to run out of hands before the job gets done.
>
> Tim Douglass
>
> http://www.DouglassClan.com