How far to insert a bit - Router Forums
 16Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 18 (permalink) Old 11-15-2019, 07:37 AM Thread Starter
Honored Member
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,481
     
Send a message via Skype™ to harrysin
Default How far to insert a bit

This question was raised quite some time ago and several different answers were posted so I contacted several major router manufacturers plus I did tests on a number of routers. Most manufacturers suggested full into the collet and then withdraw it at least 1/8", whilst at least one manufacturer said all the way in. My own tests showed that all the collets were 1" in length meaning that inserting the bit more than 1" achieved no further grip. At the time many members suggested putting things like an O ring in the bottom of the chuck but my preferred method was to place an O ring 1" from the end of the bit and I showed a simple jig that made fitting the O ring very quick and simple.
The point of this story is that today I came across this image in the first shot and the jig in the second.
Attached Thumbnails
Click image for larger version

Name:	O-ring-tool (2).jpg
Views:	30
Size:	53.0 KB
ID:	376793  

Click image for larger version

Name:	bits.jpg
Views:	30
Size:	159.8 KB
ID:	376795  

Attached Images
 

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus






harrysin is offline  
Sponsored Links
Advertisement
 
post #2 of 18 (permalink) Old 11-15-2019, 12:02 PM
Forum Contributor
 
DesertRatTom's Avatar
 
Join Date: Jul 2012
Country: United States
First Name: Tom
Posts: 16,323
 
Default

So, you drill a half inch+ hole in a block of wood, 7/8ths deep. Slip on the Oring and push the bit all the way down and that positions the Oring for you. Is that correct Harry?

The more I do, the less I accomplish.
DesertRatTom is offline  
post #3 of 18 (permalink) Old 11-15-2019, 12:24 PM
Moderation Team
 
Cherryville Chuck's Avatar
 
Join Date: Sep 2010
Country: Canada
First Name: Charles
Posts: 15,076
 
Default

Sometimes if I need every possible mm of length from a bit I'll remove the collet and put the bit in it and make a pencil mark on the shaft when it's fully inserted.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
Cherryville Chuck is online now  
Sponsored Links
Advertisement
 
post #4 of 18 (permalink) Old 11-16-2019, 09:56 AM Thread Starter
Honored Member
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,481
     
Send a message via Skype™ to harrysin
Default

Quote:
Originally Posted by DesertRatTom View Post
So, you drill a half inch+ hole in a block of wood, 7/8ths deep. Slip on the Oring and push the bit all the way down and that positions the Oring for you. Is that correct Harry?
Not quite, drill two holes, one 1/4" dia and the other 1/2" dia 1"deep. What isn't clear in the shot is a slight chamfer for the O ring to sit part way in. Trying to push an O ring on with fingers invariably causes it to twist, the jig allows the bit to go straight in.
As can be seen, no attempt was made for precision!
Attached Thumbnails
Click image for larger version

Name:	jig0001.jpg
Views:	4
Size:	586.2 KB
ID:	376831  

DesertRatTom likes this.

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus







Last edited by harrysin; 11-16-2019 at 10:09 AM.
harrysin is offline  
post #5 of 18 (permalink) Old 11-16-2019, 11:56 AM
Registered User
 
JOAT's Avatar
 
Join Date: Apr 2010
Country: United States
First Name: Theo
Posts: 6,195
 
Default

K.I.S.S. for me (Keep It Simple Stupid). I've found that dropping it all the way in, then pulling it back up about 1/8" works every time for me. Been doing it that way for years. If it ain't broke, don't fix it.
Gene Howe, JFPNCM and DesertRatTom like this.

"It ain't what you're told, it's what you know." - Granny Weatherwax
Gather the villagers, pitchforks, torches; we march at dusk!
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.
JOAT is online now  
post #6 of 18 (permalink) Old 11-16-2019, 06:38 PM
Registered User
 
Gene Howe's Avatar
 
Join Date: Jul 2007
Country: United States
First Name: Gene
Posts: 9,857
 
Default

I drop the o ring into the collet. The bit contacts the o ring and that's where it gets tightened.
JFPNCM likes this.

Gene Howe
Snowflake, AZ

'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

Please edit your profile with a name and location so we can better assist you and make for a friendlier forum.
Gene Howe is offline  
post #7 of 18 (permalink) Old 11-16-2019, 09:58 PM
Registered User
 
JFPNCM's Avatar
 
Join Date: Dec 2009
Country: United States
First Name: Jon
Posts: 3,771
 
Default

The newest Freud bit I acquired had a line marked around the shaft indicating maximum depth in the collect. The problem, difficult to see the line with my old eyes. So, the tried and true drop it in and raise it an 1/8th works for me. I also make certain that those bits where the shaft tapers as it approaches the cutter that the taper is well above the collect.

Jon
JFPNCM is online now  
post #8 of 18 (permalink) Old 11-16-2019, 11:16 PM
Forum Contributor
 
Stick486's Avatar
 
Join Date: Jan 2013
Country: United States
First Name: Stick
Posts: 25,284
 
Default

Quote:
Originally Posted by JFPNCM View Post
The newest Freud bit I acquired had a line marked around the shaft indicating maximum depth in the collect. The problem, difficult to see the line with my old eyes. So, the tried and true drop it in and raise it an 1/8th works for me. I also make certain that those bits where the shaft tapers as it approaches the cutter that the taper is well above the collect.
Most of the better brands of bits are marked that way...
you could just mark your own and not worry about the O ring needing replacing or moving......

https://www.gima-ib.de/en/commerce/c...ct/aetzstifte/

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and TaxidermyĒ
Stick486 is online now  
post #9 of 18 (permalink) Old 11-17-2019, 07:41 AM Thread Starter
Honored Member
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,481
     
Send a message via Skype™ to harrysin
Default

For those members who have a MUSCLECHUCK, simply insert the bit and let it drop gently to the O ring.
Some of these replies reminds me of a late true Aussie friend who in the 70's like us had the deep sewer pipe pass through our property, we like most of the neighborhood couldn't wait to get connected, that is except my friend. When I asked him why he said, to my amusement, "what's good enough for my father is good enough for me!!!

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus






harrysin is offline  
post #10 of 18 (permalink) Old 11-17-2019, 10:15 AM
Registered User
 
Join Date: Nov 2019
Country: United States
First Name: Joe
Posts: 13
 
Default

good day all:

back in the day do when i was trained in machine work using tools secured by a collets, rule of thumb was no less than 2/3 of the collet. some collet are bottom less and not a problem. but with routers some o have a small space after collet. if you go to bottom you can bind the tool. and can not get it out very easily. this will also add to the premature failure of the tool and collet. by the way collets have a life span. the center part does ware. also not putting the tool is deep enough will kill the collet and give bad work result. vibrating even a small amount will leave the work just off. also early bearing failure and spindel ware.

just my 0.02 cents
DesertRatTom and Nickp like this.

Last edited by biotec; 11-17-2019 at 10:18 AM. Reason: error in sentences
biotec is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome