Why It's Done Like That? - Router Forums
 
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post #1 of 10 (permalink) Old 01-24-2009, 03:17 PM Thread Starter
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Default Why It's Done Like That?

If you understand why things are done in a certain way, you learn better……….

I was watching a woodworking video and I have a question on the setup.

The table mounted router has a guide installed. The bit seems to be a straight bit with a bearing mounted at the top (end of the bit).

The stock is mounted on top of a pattern. The total thickness of the stock and pattern are below the bearing on the bit.

Why we don’t mount the pattern at the top of the bit, remove the guide and with the help of a starting pin let the bearing follow the pattern?

Thanks
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post #2 of 10 (permalink) Old 01-24-2009, 03:52 PM
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Hi kolias

It can be done both ways, but lets say you don't want to pull nails or peel tape off every time you make copy of the pattern..

The jig below will let you make many copies of the same pattern very quick by using the guide in the router table..

=======



Quote:
Originally Posted by kolias View Post
If you understand why things are done in a certain way, you learn better……….

I was watching a woodworking video and I have a question on the setup.

The table mounted router has a guide installed. The bit seems to be a straight bit with a bearing mounted at the top (end of the bit).

The stock is mounted on top of a pattern. The total thickness of the stock and pattern are below the bearing on the bit.

Why we don’t mount the pattern at the top of the bit, remove the guide and with the help of a starting pin let the bearing follow the pattern?

Thanks


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Last edited by bobj3; 01-24-2009 at 04:08 PM.
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post #3 of 10 (permalink) Old 01-24-2009, 05:56 PM Thread Starter
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Thank you Bob, of cource much easier than pulling nails / tape

The jig is also a smart way to hold paterns
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post #4 of 10 (permalink) Old 01-24-2009, 06:03 PM
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Wouldn't a pattern bit work as well? Then you don't need to figger the offset when making the pattern.

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post #5 of 10 (permalink) Old 01-24-2009, 07:14 PM
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HI Gene

"Wouldn't a pattern bit work as well?" = YOU BET
But most pattern bits are a bit short the norm or you could have the best worlds and use the bit below
One thing nice about using the guide way you can make the project a little bit bigger or smaller by just switching the guide out or by changing the size of the bit out or put on a over size guide ring over the brass guide, (see below) that's are to do with a pattern bit..

Top & Bottom Bearing
Flush Trim/Pattern Bits

http://www.mlcswoodworking.com/shops...n_flush_anchor

======

Quote:
Originally Posted by Gene Howe View Post
Wouldn't a pattern bit work as well? Then you don't need to figger the offset when making the pattern.


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Last edited by bobj3; 01-24-2009 at 07:40 PM.
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post #6 of 10 (permalink) Old 01-24-2009, 08:26 PM
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Bob,
did you make the pattern and the hold-downs in post #2?
Cordially,
Gerry
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post #7 of 10 (permalink) Old 01-24-2009, 08:48 PM
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Hi Gerard_sr

Yep, I do make a lot of knobs and jigs

If you take a peek into my gallery you will see many of them.. plus how to make them in many ways

It can be a pain to dig in the gallery so here's one of many
http://www.routerforums.com/42539-post14.html
http://www.routerforums.com/jigs-fix...ade-knobs.html

=======

Quote:
Originally Posted by Gerard_sr View Post
Bob,
did you make the pattern and the hold-downs in post #2?
Cordially,
Gerry



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Last edited by bobj3; 01-24-2009 at 09:22 PM.
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post #8 of 10 (permalink) Old 01-25-2009, 12:07 AM
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Quote:
Originally Posted by bobj3 View Post
Hi Gerard_sr

Yep, I do make a lot of knobs and jigs

If you take a peek into my gallery you will see many of them.. plus how to make them in many ways

It can be a pain to dig in the gallery so here's one of many
http://www.routerforums.com/42539-post14.html
http://www.routerforums.com/jigs-fix...ade-knobs.html

=======
SIR, and I mean that in admiration, The knobs are one heck of an idea!
I am totally blown away by your inventiveness!
You should write a book on the subject!
If you do, I'll be in line for a signed copy or two!
I've got to look into your gallery more!

(edit) You MUST have a book out, Right?

Respectfully,
Gerry

Last edited by Gerard_sr; 01-25-2009 at 12:21 AM. Reason: see (edit)
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post #9 of 10 (permalink) Old 01-25-2009, 12:27 AM
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Hi Gerard_sr

Thanks you

NO book But I do like to share

========

Quote:
Originally Posted by Gerard_sr View Post
SIR, and I mean that in admiration, The knobs are one heck of an idea!
I am totally blown away by your inventiveness!
You should write a book on the subject!
If you do, I'll be in line for a signed copy or two!
I've got to look into your gallery more!

(edit) You MUST have a book out, Right?

Respectfully,
Gerry



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post #10 of 10 (permalink) Old 01-25-2009, 12:49 AM
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In addition to variable heights when using a guide bushing remember that a guide bushing will never sieze up or come off in the middle of a project. The main reason for using the bit in post #1 is the bearing is not in the way and the bit is the proper size for the project.

Mike
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