Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Thu Aug 21, 2025 1:38 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 28 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Neck carving duplicator?
PostPosted: Mon Jul 01, 2013 11:20 am 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
How many people here use them? I was thinking of making one or buying one. well because I hate carving necks.
I was wondering which one people recommend and if anyone has ever made one?


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 3:02 pm 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
I was thinking of making this. http://www.copycarver.com/


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 4:06 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7555
First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
If you do, let us know how it goes.
I've been thinking of something like that as well.


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 4:17 pm 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
Will do. They say it will only cost $150-200 to build. I just wish it wasn't so big.


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 4:35 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Jun 10, 2012 10:04 am
Posts: 773
First name: Peter
Last Name: Fenske
City: Leeds
State: Yorkshire
Country: Uk
Focus: Build
Status: Amateur
Not exactly simple, but have you seen Pederson guitars neck carving jig? If not look on his build threads in the AGF custom shop.

_________________
"I am always doing that which I cannot do, in order that I may learn how to do it."
Pablo Picasso

https://www.facebook.com/FenskeGuitars


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 4:37 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Jan 28, 2008 5:21 am
Posts: 4917
Location: Central PA
First name: john
Last Name: hall
City: Hegins
State: pa
Zip/Postal Code: 17938
Country: usa
Focus: Build
Status: Professional
built one threw it away

way too much slop

_________________
John Hall
blues creek guitars
Authorized CF Martin Repair
Co President of ASIA
You Don't know what you don't know until you know it


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 6:31 pm 
Offline
Koa
Koa

Joined: Sat Mar 01, 2008 2:44 pm
Posts: 692
I built one too. Works fine, but makes a lot of mess and I can carve by hand with a draw knife and rasps in about the same time. So I don't use it for necks. Works great for bridges, logos for the peg head, truss rod slots, and binding (if you build it with the ability of maintaining a vertical axis).

Chuck

_________________
_________________


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 7:41 pm 
Offline
Contributing Member
Contributing Member

Joined: Sun Jan 10, 2010 11:40 am
Posts: 764
First name: wes
Last Name: Lewis
City: Garland
State: Tx.
Zip/Postal Code: 75044
Focus: Build
how about router bits???????
I use 2 now , one is a triple wing bit, about a 2.25 inch to start with and finish the profile with a 2.5 2 fluted bit...
take off just a little at a time...


You do not have the required permissions to view the files attached to this post.

_________________
MK5acoustics.com


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 9:36 pm 
Offline
Contributing Member
Contributing Member

Joined: Sun Oct 05, 2008 8:50 pm
Posts: 239
I had a Gemi Duplicarver. I made a master neck and it actually worked really well and I could bang out a nice symmetrical neck in about 5 minutes that didn't require a lot of finish work to make it nice.. Why don't I still have it? The dang things take up so much floor space and need to be leveled out so the bed wasn't twisted at all, so moving it out of the way after each batch of necks was completed was not going to happen. I eventually sold it. I do miss it, but I just don't have the space for something that big.


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 10:27 pm 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
PeterF wrote:
Not exactly simple, but have you seen Pederson guitars neck carving jig? If not look on his build threads in the AGF custom shop.

I saw that. It was sweet but I don't have te machine for that.


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 10:29 pm 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
I also saw a guy on YouTube mod his so the board with the router was on a hing so it could swing up to give it another access.


Top
 Profile  
 
PostPosted: Mon Jul 01, 2013 11:23 pm 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Thu Oct 09, 2008 11:27 pm
Posts: 313
Location: McKinney, TX
First name: David
Last Name: Morris
City: McKinney
State: TX
Focus: Build
Status: Amateur
weslewis wrote:
how about router bits???????
I use 2 now , one is a triple wing bit, about a 2.25 inch to start with and finish the profile with a 2.5 2 fluted bit...
take off just a little at a time...

This is what I do. I hit it with a 1" roundover bit, and it's amazing how much time that saves. From there, I generally go to 40 grit sandpaper, so I can feel the neck in my hand. It's become one of the easiest and pleasurable parts of the process for me.

_________________
David Morris


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 3:32 am 
Offline
Koa
Koa

Joined: Thu Jan 24, 2008 2:13 am
Posts: 902
Location: Caves Beach, Australia
Those of you using a roundover bit in a router table, would you mind detailing how you do it?
are you doing the blank before it is tapered?


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 6:18 am 
Offline
Contributing Member
Contributing Member

Joined: Sun Jan 10, 2010 11:40 am
Posts: 764
First name: wes
Last Name: Lewis
City: Garland
State: Tx.
Zip/Postal Code: 75044
Focus: Build
its important to have the blank squared up , the profile accurately cut to within .040 or so of final thickness including the heel and headstock, mark where the top bearing stops at the neck to headstock transition, one nice thing is that the bits make a perfect " volute " if done properly, go slowly , take about 5 passes each side , also the width needs to be cut about 3/32 wider than the final width , you may trash a couple of necks but once figured out its easy, make sure to take all safety precautions..

_________________
MK5acoustics.com


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 6:32 am 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
PeterF wrote:
Not exactly simple, but have you seen Pederson guitars neck carving jig? If not look on his build threads in the AGF custom shop.

do you know if he has a toot on how to make this? I was thinking of trying to make something like this but not sure how to make the templates for the necks


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 7:35 am 
Offline
Koa
Koa
User avatar

Joined: Thu Sep 24, 2009 9:50 am
Posts: 942
Location: Ellicott City, Md - USA
First name: John
Last Name: A
Focus: Build
Status: Amateur
Wes - what is the radius of that bit ? I assume it is 2.5" diameter - any chance you can post pictures of the process ?

Is this the bit ?

2-1/2-Inch cutter diameter
1-1/4-Inch cutting length
3-1/4-Inch overall length
1/2-Inch shank diameter
1-Inch radius

_________________
It's this new idea from recent decades that everyone gets a participation award. - MUX


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 8:08 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7555
First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
Are you making multiple passes by raising the bit, or trying to carefully hold back the wood and not letting it cut deep until you want it to?


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 8:16 am 
Offline
Contributing Member
Contributing Member

Joined: Sun Jan 10, 2010 11:40 am
Posts: 764
First name: wes
Last Name: Lewis
City: Garland
State: Tx.
Zip/Postal Code: 75044
Focus: Build
Radius bits are 1 and 1.25
Mark centerline on neck and raise bit, I don't take 1 inch bit all the way,so it doesn't cut off width , last pass is with bigger bit, finishing heel and neck to headstock transition

_________________
MK5acoustics.com


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 9:23 am 
Offline
Koa
Koa
User avatar

Joined: Tue Dec 15, 2009 1:46 pm
Posts: 667
First name: Robert
Last Name: Renick
City: Mount Shasta
State: ca
Zip/Postal Code: 96067
Country: us
Focus: Build
Status: Amateur
micahmed wrote:
PeterF wrote:
Not exactly simple, but have you seen Pederson guitars neck carving jig? If not look on his build threads in the AGF custom shop.

do you know if he has a toot on how to make this? I was thinking of trying to make something like this but not sure how to make the templates for the necks

I have done the Fox compound radius fb jig, the same idea, but just a simple radius, not a neck shape. At some point I will make either the Fox version, for a belt sander, or the Brunner version for a shaper. The Pederson ideas hopefully incorporated.

My only thought for making the template slugs, or whatever we call them, is to carve a neck to mount, then try to draw the template in the location that they will sit, basically reverse engineer. Or create the neck cross sections and run an extended pencil over them and onto a board, that is the likely the better way. Can't wait to make one, my shaper is ready with a spiral cutter in it.

_________________
http://shastaguitar.com/
http://www.kalimbakit.com/
http://www.youtube.com/user/comfyfootgr ... ature=mhee
http://www.facebook.com/robert.renick.7


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 9:38 am 
Offline
Contributing Member
Contributing Member

Joined: Tue Mar 02, 2010 9:51 pm
Posts: 193
Location: Cleveland, Ohio
First name: Robbie
Last Name: Fraelich
Focus: Build
Status: Amateur
weslewis wrote:
Radius bits are 1 and 1.25
Mark centerline on neck and raise bit, I don't take 1 inch bit all the way,so it doesn't cut off width , last pass is with bigger bit, finishing heel and neck to headstock transition


Hey Wes,

What about setting the router bit to full depth and using a larger bearing to offset the neck? You could then just use continually smaller bits until you are using the stock bearing. This may be a little more costly but less adjusting around. Just a thought.

Rob


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 11:27 am 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Thu Oct 09, 2008 11:27 pm
Posts: 313
Location: McKinney, TX
First name: David
Last Name: Morris
City: McKinney
State: TX
Focus: Build
Status: Amateur
Jeff Highland wrote:
Those of you using a roundover bit in a router table, would you mind detailing how you do it?
are you doing the blank before it is tapered?


You have to taper the neck first. Otherwise it won't work right. Believe it or not, I do this with a handheld router.

_________________
David Morris


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 4:28 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Tue May 02, 2006 9:02 am
Posts: 2351
Location: Canada
First name: Bob
Last Name: Garrish
City: Toronto
State: Ontario
Country: Canada
Status: Professional
meddlingfool wrote:
Are you making multiple passes by raising the bit, or trying to carefully hold back the wood and not letting it cut deep until you want it to?


You can use spacers, bearings, or anything else solid to do multiple passes but trying to freehand them is destined for disaster (and extremely unsafe with large diameter bits).

_________________
Bob Garrish
Former Canonized Purveyor of Fine CNC Luthier Services


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 4:51 pm 
Offline
Contributing Member
Contributing Member

Joined: Thu Mar 19, 2009 10:16 pm
Posts: 190
Location: Bell Buckle, TN.
First name: kevin
Last Name: waldron
City: Bell Buckle
State: TN
Zip/Postal Code: 37020
Country: USA
Focus: Build
Status: Professional
Agree with Bob, hand routing with large bits is an accident looking for a place to happen.

Get creative but use jigs and fixtures with large router bits ..... a lot of what you do depends on the tools that you have and what your trying to accomplish.

As for a duplicator, they really shine when you can do more than one at a time.... basically takes the same amount of time to do one as it does several.

Some of you might like to see our video of cutting a Ukulele Neck on the cnc. http://youtu.be/7zkj8vekG4o

Eight head duplicator and several jigs/fixture drawings as examples..... below.

Blessings,

Kevin


You do not have the required permissions to view the files attached to this post.


Top
 Profile  
 
PostPosted: Tue Jul 02, 2013 5:08 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Jun 10, 2012 10:04 am
Posts: 773
First name: Peter
Last Name: Fenske
City: Leeds
State: Yorkshire
Country: Uk
Focus: Build
Status: Amateur
micahmed wrote:
PeterF wrote:
Not exactly simple, but have you seen Pederson guitars neck carving jig? If not look on his build threads in the AGF custom shop.

do you know if he has a toot on how to make this? I was thinking of trying to make something like this but not sure how to make the templates for the necks

In case you hadn't seen it already: http://www.youtube.com/watch?v=nc66Gm5jcys
It doesn't look that hard to make. The templates are probably made on CAD with the neck profile projected out to the right distance. Instead of using an overhead router, you could make the jig upside-down and use an enlarged router table - it wouldn't even need to be spring loaded then. It just takes up loads of room.

_________________
"I am always doing that which I cannot do, in order that I may learn how to do it."
Pablo Picasso

https://www.facebook.com/FenskeGuitars


Top
 Profile  
 
PostPosted: Wed Jul 03, 2013 6:26 am 
Offline
Cocobolo
Cocobolo

Joined: Wed Apr 20, 2011 11:42 am
Posts: 433
First name: micah
Last Name: medlong
City: parma
State: ohio
Zip/Postal Code: 44129
Country: usa
Focus: Build
Status: Amateur
So, I ordered the plans. but I found one on youtube that I guy did a little moding on it. so this is what im shooting for in this video.
http://www.youtube.com/watch?v=DytNtu2dbcY


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 28 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours


Who is online

Users browsing this forum: Michaeldc and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group
phpBB customization services by 2by2host.com