how to route a groove. - Router Forums
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post #1 of 33 (permalink) Old 07-25-2016, 04:48 PM Thread Starter
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Default how to route a groove.

I want to route a V groove 1/2" from the edge around this oval. I want to do it the safest [as in no goofs] way. This is my third time to make this sign and I am tired of it. On one of my mess up's I used double stick tape to attach a block of wood to the routers base and use that as a fence. I could do it but it's risky. The other way is use the router table and drop the sign on top of the bit and let the sign ride the fence. So far this seems the best way. I am just looking for more and better ideas.


Don in Murfreesboro,Tn.

Measure once cut twice and it's still to short.
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post #2 of 33 (permalink) Old 07-25-2016, 05:01 PM
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My choice would be the router table.

"The difference between genius and stupidity is that genius has its limits". Albert Einstein
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post #3 of 33 (permalink) Old 07-25-2016, 05:05 PM
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Make a V shaped guide for the table router large enough to accept your sign. 2X2s would be good. You'll likely need to cut the ends of the legs to set against the fence at the angle you'll need for the V to fit your circle. Center the bit between the legs of the V, and far enough away from the fence to give you the half inch you want.
Then hold the sign in place against the guide and lower it onto the spinning bit and turn it against the rotation of the bit.
Hope that made sense.

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post #4 of 33 (permalink) Old 07-25-2016, 05:06 PM
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pencil in the line..
hand router it w/ inlay groover...

make a smaller oval template ans use a bearing guided bit or your bushings in your router...

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

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post #5 of 33 (permalink) Old 07-25-2016, 05:17 PM
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The issue with doing it with an edge guide or like Gene suggests is that the shape is elliptical and will bridge across the gaps differently where the slope has a larger radius that it will on the ends where the radius is smaller. The most accurate method I would say is to cut the shape out of some scrap and use that as a template and then use a guide bushing.

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.
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post #6 of 33 (permalink) Old 07-25-2016, 06:31 PM
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Looks round to me. Chuck is right. If it's elliptical, my method won't work.

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post #7 of 33 (permalink) Old 07-25-2016, 08:39 PM
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it's elliptical....

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 Taxidermy”
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post #8 of 33 (permalink) Old 07-25-2016, 09:02 PM
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I think Stick's got it right.

HJ
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post #9 of 33 (permalink) Old 07-26-2016, 01:50 AM
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In doing my platter I learned concentric ellipsis are difficult to layout. I used the string method to do one Then wanted one 1/2" smaller so I moved the pins 1/2" Nope its not concentric trace the shape to make a jig to hold it or freehand a hand drawn inner line which is something I can not do Bill free hand =booboo

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post #10 of 33 (permalink) Old 07-26-2016, 04:04 AM
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Don, what are the dimensions (major and minor axes) of your (beautiful as it is) sign? What is the width of the V-groove you want to cut?
Rockler sells an ellipse jig http://http://www.rockler.com/rockle...cle-router-jig

Another possibility using sacrificial pieces and template guides: (it is now 4 AM and I need to get some sleep.I thought I had the template guide siizes and router bit sizes figured out but it required a template guide size only available from Oak-Park. Can the 1/2 inch centering of the V-groove be off by 1/16 inch? To be continued.)To be continued.)

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Last edited by TWheels; 07-26-2016 at 04:24 AM.
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