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Ralph Laughton
PostPosted: Wed Mar 31, 2010 5:45 pm 
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Here is a nice easy one.

What's going on here then?

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Ralph :wink:

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Rapid Roger
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PostPosted: Wed Mar 31, 2010 6:10 pm 
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Router set up for following an edge or pattern.

That's my story and I'm sticking to it! :D

Rog

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Ralph Laughton
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PostPosted: Wed Mar 31, 2010 6:14 pm 
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Tell me about the drill bit and what its function is in this application and I'll award you a soggy point...

Ralph :wink:

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Ice Pirate
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PostPosted: Wed Mar 31, 2010 7:03 pm 
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Extended base for additional stabalization and the collar for placement against a pattern. Looks like it'd be used to quickly drill a series of holes based on the template.

But I could be wrong. :roll:

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Rapid Roger
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PostPosted: Wed Mar 31, 2010 7:34 pm 
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Sorry, I didn't notice that it was a drill bit! :shock: I thought it was an up sprial router bit! :confused:
Well, in that case...... considering the depth of the bit....unless that is a plunge router....which I dont think it is.......I DON'T HAVE A CLUE!!! :shock: ..... AGAIN!!! :shock:
Good luck on getting the hole exactly where you want it!!! :D

Oh wait!!! Maybe it is a plunge router!! I just doesn't look like MY plunge router. :oops: :oops: :oops: :oops: :oops: :oops:

Rog

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Delta-Coyne
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PostPosted: Wed Mar 31, 2010 9:20 pm 
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Oh, Oh, Oh,......(doing my best Horshack impression from Welcome Back Kotter)... It looks like you are fitting an auxiliary base on the router and are using a !/4" bit chucked to center the guide bushing.....
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eric
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PostPosted: Thu Apr 01, 2010 1:31 am 
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It looks like your ready to use this
http://www.woodworking.org/WC/GArchive9 ... lejig.html

Even if your not, its worth checking out

eric
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Bob Malone
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PostPosted: Thu Apr 01, 2010 4:09 am 
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Well I got it wrong 2 years ago, but I do remember the answer Ralph.

Centering a shop-made plate using a 1/4" drill bit and a guide.

But your story was well worth reading again.

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Ralph Laughton
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PostPosted: Thu Apr 01, 2010 5:46 pm 
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Delta-Coyne gets the points tonight! In he standard Porter-Cable style set of guide bushes The 5/16 inch diameter guide has an internal diameter of 1/4 inch making it a perfect fit on a 1/4 inch drill bit that will centre in a 1/4 inch collet - Simple!

Just fir reference here are the dimensions of a typical PC style set of guide bushes. The length may differ from one set to another...


Internal Ø External Ø Length
1/4 inch 5/16 inch 5/32 inch
9/32 inch 3/8 inch 5/16 inch
11/32 inch 7/16 inch 5/32 inch
13/32 inch 1/2 inch 5/16 inch
17/32 inch 5/8 inch 9/16 inch
5/8 inch 51/64 inch 9/16 inch
21/32 inch 3/4 inch 9/16 inch

Ralph :wink:

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