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PostPosted: Tue Jan 31, 2017 2:03 pm 
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Joined: Thu Jul 09, 2015 7:46 pm
Posts: 24
Newbie, working on 1st project, a tenor ukulele. Got the top glued and down to about .086" and now to the sound hole and rosette troughs. What do y'all do? by hand? StewMac dremel gear? or...?

Thanks for the help!


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PostPosted: Tue Jan 31, 2017 8:39 pm 
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Joined: Fri Mar 03, 2006 7:09 pm
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Location: Hegins, Pa
The stew mac unit will do the job

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Blues Creek Guitars Inc
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PostPosted: Tue Jan 31, 2017 11:07 pm 
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Joined: Wed Aug 13, 2014 12:14 pm
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I made a pivot bar for my DeWalt compact router. I clamp down the top to a piece of plywood that serves as a bench and drill a 1/8" hole in the center of what will be the sound hole down through the top and the plywood, which gives more solidarity to the hole. I use a 1/8" dia. dowel pin in that hole as the pivot point to rout the rings for the rosette, then as the final step use it to cut out the sound hole.

Note: don't be in a big rush to cut out the sound hole. Once you do, you lose your center point! It can be recovered, if need be, but it's easier to wait until you're sure you won't need it again before cutting the hole.

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PostPosted: Tue Jan 31, 2017 11:27 pm 
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Joined: Sat Apr 10, 2010 10:50 pm
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Location: Seattle
I normally use a router with a base that allows me to make circles. I have used an lmi circle cutter and a chisel, it is easier than it looks. One best practise I have is that I do not thickness the top until after I have installed the rosette. It just gives me a bit of wood to deal with tearout or other minor accidents.

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PostPosted: Fri Feb 03, 2017 12:00 am 
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Joined: Thu Jul 09, 2015 7:46 pm
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Thank you all! I found while researching this that a good number of folks have turned from whatever method they were using to the StewMac Dremel base and circle cutter. I could think of a lot of ways to spend the money but decided I'd just jump in. I did try messing around with a chisel and might again sometime but like the security of a tool that is slip-proof.


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PostPosted: Fri Feb 03, 2017 7:28 am 
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Joined: Fri Mar 03, 2006 7:09 pm
Posts: 5422
Location: Hegins, Pa
look at the exacto brand stuff
https://www.amazon.com/OLFA-9911-Compas ... cle+cutter
I never used this but this may be what your looking for. It has a blade to score the rosette lines and you clear the rest with a chisel

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John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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PostPosted: Fri Feb 03, 2017 10:06 am 
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Joined: Wed Aug 13, 2014 12:14 pm
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To set the radius I want to cut, I drill two 1/8" dia. holes in a strip of acrylic or aluminum that are spaced at the radius I want. I can do that very accurately on my milling machine. Then I slip that strip over the center pin of the radius arm on the router and over the toolbit, which guarantees the radius setting is what I want.

Lacking a milling machine to locate the holes, I'm not sure that technique would get you anything though.

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Everybody is ignorant, only on different subjects. -- Will Rogers
There are lots of people who mistake their imagination for their memory. - Josh Billings
Anything is possible if you don't know what you are talking about.


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PostPosted: Fri Feb 03, 2017 8:44 pm 
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Joined: Sun Mar 09, 2014 8:13 pm
Posts: 1319
Hi. I've got the Stewmac base and I'm no longer using it if you want it. I sent you a pm.


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PostPosted: Sat Feb 04, 2017 1:48 am 
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Joined: Sat Feb 09, 2008 8:06 pm
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Location: Visalia, CA
Diane what are you using now for your rosettes?


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PostPosted: Sat Feb 04, 2017 4:19 pm 
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Joined: Sun Mar 09, 2014 8:13 pm
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Kevin Sjostrand wrote:
Diane what are you using now for your rosettes?


I'm using my Ridgid compact router and a JS Bogdanovich attachment I found online. It's plastic, but made to work like the stewmac rosette attachment. Unlike the stewmac, it's made for a compact router, which I prefer.

Attachment:
router-attachment-500x384.jpg


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