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PostPosted: Thu May 09, 2019 3:30 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
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First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
Or is it a fixture? I dunno...

Start with a nice flat board
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Add a few side supports/guides to keep the radius block crntered
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Put fb blank dead centre...
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Sand away. Notice the scrap offcuts at each end, to prevent dumping the ends...ImageImage

Voila! This is a mando board, btw...but a larger version would work for guitars...
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These users thanked the author meddlingfool for the post: GRS (Fri May 10, 2019 7:47 am)
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PostPosted: Thu May 09, 2019 8:18 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Sun Mar 30, 2008 8:20 am
Posts: 3576
Cool!
If you add some 1/2 inch wide (and about as tall as the finished edge of the fretboard) strips of hardwood against the inside edge of the guide rails and remove 5/8ths inch of sandpaper from the edges of your sanding block it might keep the thickness of the fretboard edges more uniform and also let you know when you are done (when there is wood on wood contact).


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PostPosted: Thu May 09, 2019 8:42 am 
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Cocobolo
Cocobolo

Joined: Mon Feb 13, 2012 8:49 pm
Posts: 319
First name: peter
Last Name: havriluk
City: granby
State: ct
Zip/Postal Code: 06035
Country: usa
Focus: Build
Status: Amateur
I made and used something like this myself. Worked well, about three beers per fingerboard...
I found putting a handle on the sanding block helped me a whole bunch.

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Peter Havriluk


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PostPosted: Thu May 09, 2019 11:21 am 
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Contributing Member
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Joined: Fri Jan 11, 2013 2:26 pm
Posts: 133
First name: Carl
Last Name: Dickinson
City: Forest Ranch
State: California
Zip/Postal Code: 95942
Country: USA
Focus: Build
Status: Amateur
I velcroed my radius block to an inline pneumatic sander. You can get it done in 1/2 a beer that way.


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PostPosted: Thu May 09, 2019 12:30 pm 
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Koa
Koa

Joined: Sun Sep 16, 2007 1:27 pm
Posts: 636
Location: United States
I use a block plane to speed up the process.

Plane the sides a bit, then check the radius with the sanding block.
Repeat until done.

Maybe one beer per, but definitely not a three beer job.


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PostPosted: Thu May 09, 2019 12:32 pm 
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Joined: Thu Feb 09, 2006 2:35 pm
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Location: United States
First name: Joe
Last Name: Beaver
City: Lake Forest
State: California
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Brilliant Ed, and just in the nick of time. I have a FB laying on my bench ready for a radius.

And my goal for this build is to improve the accuracy of all things related to playability.

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Maker of Sawdust


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PostPosted: Thu May 09, 2019 12:58 pm 
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Brazilian Rosewood
Brazilian Rosewood

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First name: Ed
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Good luck! I found this worked quite well. The parallel on the vertical sides kept things pretty close to symmetrical, but I like the idea of spacers to let you know when it's done...


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PostPosted: Thu May 09, 2019 3:41 pm 
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Joined: Wed Aug 12, 2009 1:13 am
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First name: Tim
Last Name: Allen
City: San Francisco
Focus: Build
Status: Amateur
I have used a similar one for some years. I use tapered wedges, between the rails and the fretboard, to hold the fretboard in the jig.

My way to economize on beers using the jig comes from Sylvan Wells. Run the unradiused fretboard through the thickness sander on a flat carrier board with one edge of the fretboard slightly raised to make a very shallow facet along one side. Then run the fretboard through swapped end for end, to make a similar facet on the other side. This roughly approximates the arched contour you'll be shaping with the radius block. Depending on how accurately you cut the facets, you reduce the time needed to sand in the radius by .843 to 2.6717 beers. Approximately.

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Tim Allen
"Never hurry, never rest."


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PostPosted: Thu May 09, 2019 4:24 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Thu Feb 12, 2009 12:12 pm
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First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
Dave Livermore wrote:
I use a block plane to speed up the process.

Plane the sides a bit, then check the radius with the sanding block.
Repeat until done.

Maybe one beer per, but definitely not a three beer job.


I'm pretty much the same but with a No. 5 or No. 62, whichever is sharpest at the time. I don't go to the radius block after the plane. Takes maybe 1/2 a beer. I think I might drink slowly.

Wud watched me do it once at our gathering maybe he will chime in with a beer estimate. Eat Drink

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Bryan Bear PMoMC

Take care of your feet, and your feet will take care of you.


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PostPosted: Thu May 09, 2019 6:08 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
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First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
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Don't generally get on too well with the edged weapons, I find abrasives more in line with my character...


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PostPosted: Thu May 09, 2019 7:14 pm 
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Cocobolo
Cocobolo

Joined: Mon Dec 15, 2014 1:35 am
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Last Name: Jones
City: Cobble Hill
State: British Columbia
Country: Canada
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Looks good, Ed.......and three beer with no power tools involved I think I can do. :) Thanks

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Blue Ring Acoustics
blueringacoustics.ca


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PostPosted: Thu May 09, 2019 10:46 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 5756
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
No beers in the shop for me...:(


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PostPosted: Fri May 10, 2019 7:07 pm 
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Koa
Koa

Joined: Mon Jul 11, 2005 5:17 am
Posts: 842
Location: United States
Me neither, I hack up enough mistakes without help


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PostPosted: Sat May 11, 2019 4:56 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 5756
First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
For me it’s cause it’s not a hobby, it’s my job. I’d look pretty dimly on the electrition or the plumber or the mechanic knocking back a few while on the job...


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