Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Sat Jul 19, 2025 4:18 pm


All times are UTC - 5 hours


Forum rules


Be nice, no cussin and enjoy!




Post new topic Reply to topic  [ 20 posts ] 
Author Message
PostPosted: Tue May 10, 2011 10:56 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9191
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
I'm sometimes slow on the uptake for ideas, but I finally tried Robbie's little simple cutter for cutting out a headstock shape. It's amazingly simple and it works like a charm. I was just trying it out on a scrap of HOG with worm holes in it, but cutting out my headstock shape has given me problems on every guitar, so far. Not any more! I used a 3/16 drill bit and ground a 30* angle on the base of the bit, flipped it around and chucked the original cutting end in the drill press chuck. I had to fiddle to make sure it didn't wobble, but got is chucked to run smoothly. Here is the bit.
Attachment:
P1050471 (Large).JPG


It cuts very smoothly, but you do have to clean out the channel after every pass. I found that, if you take small passes, you can go pretty fast, and do two in about the same time it takes to do one deeper pass. It makes chips, not dust, so does not make a cloud. Goes very quickly, and once some depth is established, it follows the channel almost without effort. Here are some progress shots.
Attachment:
P1050478 (Large).JPG
Attachment:
P1050479 (Large).JPG
Attachment:
P1050481 (Large).JPG
Attachment:
P1050483 (Large).JPG
Attachment:
P1050487 (Large).JPG
Attachment:
P1050488 (Large).JPG


Just a little sanding to smooth things out, and some minor file work to establish the sharp corners at the shoulderrs, and done. What a great tip that was. It's smooth, easy, and simple! Can't wait to use it on my next headstock - tomorrow.

Thanks Robbie!


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

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars


Top
 Profile  
 
PostPosted: Wed May 11, 2011 8:27 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Jan 19, 2005 5:23 am
Posts: 2356
Location: United States
Thanks Waddy! I am glad you liked the tip. It is the safest method I have found to cut out the peghead and it allows you to do intricate shapes as well. Party on! [:Y:]


Top
 Profile  
 
PostPosted: Wed May 11, 2011 8:45 am 
Offline
Koa
Koa
User avatar

Joined: Thu Jan 01, 2009 9:43 am
Posts: 601
Location: Bozeman, Montana
Focus: Build
That IS a good method! Thanks Robbie.

_________________
http://www.booneguitars.com
https://www.facebook.com/pages/Stephen-Boone-guitar-builder/488208541257210


Top
 Profile  
 
PostPosted: Wed May 11, 2011 9:18 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3308
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
This is the first I am seeing of this method. A few questions:
At what speed do you run the drill press?
I assume the shank of the bit acts like the bearing on a pattern bit, does it build up heat and damage the template?
Other than grinding the angel, is there any trick to sharpening?

I can't wait to try this.

_________________
Bryan Bear PMoMC

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


Top
 Profile  
 
PostPosted: Wed May 11, 2011 9:24 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 5895
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Neat - a simple one fluted cutter!
I suggest you cut off a bit of the drill so that you can get more of it in the chuck, and have less sticking out.
This will make the cutter stiffer.

_________________
"Act your age, not your shoe size" - Prince


Last edited by Chris Pile on Wed May 11, 2011 9:25 am, edited 1 time in total.

Top
 Profile  
 
PostPosted: Wed May 11, 2011 9:25 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Jan 19, 2005 5:23 am
Posts: 2356
Location: United States
Bryan,

Here is a video that will probably answer your questions


Top
 Profile  
 
PostPosted: Wed May 11, 2011 9:30 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9191
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
I was running mine at about a medium speed on the press. Too fast might cause too much heat. I ground mine using an eclipse holder like you would a chisel, then I honed it to a sharp and polished surface. The shaft does work as the guide. I started mine with a cut deep enough that some of the shaft was running on the template. Once a pass is completed, it's very smooth. As I said though, lighter cuts make for smoother and faster progress. A smaller bit would make for tighter corners, but might also bend a little if you push against it.

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars


Top
 Profile  
 
PostPosted: Wed May 11, 2011 9:33 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 5895
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Great vid!

_________________
"Act your age, not your shoe size" - Prince


Top
 Profile  
 
PostPosted: Wed May 11, 2011 10:02 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3308
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
Thanks guys!

Robbie, I didn't recognize your name. . . I have watched many of your videos; they are just great. Thanks.

_________________
Bryan Bear PMoMC

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


Top
 Profile  
 
PostPosted: Wed May 11, 2011 11:39 am 
Offline
Brazilian Rosewood
Brazilian Rosewood
User avatar

Joined: Sat May 22, 2010 10:32 am
Posts: 2616
First name: alan
Last Name: stassforth
City: Santa Rosa
State: ca
Zip/Postal Code: 95404
Country: usa
Focus: Build
Status: Amateur
Wow!
Thanks!


Top
 Profile  
 
PostPosted: Wed May 11, 2011 11:51 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
I saw this video the other day! I had to show the guys at work, they loved idea! Thank you Robbie


Top
 Profile  
 
PostPosted: Wed May 11, 2011 5:17 pm 
Offline
Koa
Koa
User avatar

Joined: Wed Jan 23, 2008 8:05 pm
Posts: 1567
Location: San Jose, CA
First name: Dave
Last Name: Fifield
City: San Jose
State: CA
Zip/Postal Code: 95124
Country: USA
Focus: Build
Status: Amateur
+1 for this method. I subscribed to Robbie's classical guitar building videos and this was one of the first ones I watched. It was a revelation to me - I'd been trying to pattern route my headstocks but had all kinds of problems with tear out - Robbie's method solves all the problems I was having and is MUCH safer also! Thanks Robbie!!! [:Y:] [:Y:] [:Y:]

Cheers,
Dave F.

_________________
Cambrian Guitars

"There goes Mister Tic-Tac out the back with some bric-brac from the knick-knack rack"


Top
 Profile  
 
PostPosted: Wed May 11, 2011 5:42 pm 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Jan 19, 2005 5:23 am
Posts: 2356
Location: United States
Dave Fifield wrote:
+1 for this method. I subscribed to Robbie's classical guitar building videos and this was one of the first ones I watched. It was a revelation to me - I'd been trying to pattern route my headstocks but had all kinds of problems with tear out - Robbie's method solves all the problems I was having and is MUCH safer also! Thanks Robbie!!! [:Y:] [:Y:] [:Y:]

Cheers,
Dave F.


Wow! What a response. This video has been available for a couple of years at least. I thought every one had learned this trick by now.
Glad to hear you are enjoying my online classical guitar building course Dave!
Happy Building! [:Y:]


Top
 Profile  
 
PostPosted: Thu May 12, 2011 5:32 am 
Offline
Cocobolo
Cocobolo
User avatar

Joined: Wed Dec 03, 2008 10:27 am
Posts: 161
Location: Portugal
Focus: Build
Status: Amateur
Hi Robbie,

In your video one can also see on the template the slotted pegheads.
Do you think one can use the same method to do this on the guitar?

thank you
Antonio
.


Top
 Profile  
 
PostPosted: Thu May 12, 2011 6:30 am 
Offline
Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Jan 19, 2005 5:23 am
Posts: 2356
Location: United States
Antonio wrote:
Hi Robbie,

In your video one can also see on the template the slotted pegheads.
Do you think one can use the same method to do this on the guitar?

thank you
Antonio
.


Antonio,

Yes, I also use this method to cut out the slots on the pegged.


Top
 Profile  
 
PostPosted: Fri May 13, 2011 12:44 am 
Offline
Cocobolo
Cocobolo

Joined: Sat Aug 29, 2009 1:41 am
Posts: 160
This method looks awesome and I hope to use it when I have a drill press of my own one day. Waddy did you make that template yourself or buy it somewhere? I have always wished to be able to buy a set of 4 or 5 different templates with the slots cut out but have never seen anything for classical guitar that I liked.


Top
 Profile  
 
PostPosted: Fri May 13, 2011 9:27 am 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Mon Mar 19, 2007 7:05 am
Posts: 9191
Location: United States
First name: Waddy
Last Name: Thomson
City: Charlotte
State: NC
Focus: Build
Status: Semi-pro
I made the template, Matt. Actually, Robbie uses one made from wood or MDF or something that is a little thicker. Thicker than what I used would be a little better, but it's what I had made.

_________________
Waddy

Photobucket Build Album Library

Sound Clips of most of my guitars


Top
 Profile  
 
PostPosted: Fri May 13, 2011 3:49 pm 
Offline
Koa
Koa

Joined: Fri Dec 16, 2005 1:47 am
Posts: 504
Location: United States
Only issue I can see is that with a taper fit chuck you should be very careful not to go too fast or cut too much at a time (which Robbie covers in the vid) and generate too much sideways pressure. Otherwise you could risk the chuck (and bit) coming off.


Top
 Profile  
 
PostPosted: Fri May 13, 2011 4:14 pm 
Offline
Contributing Member
Contributing Member
User avatar

Joined: Sun Mar 06, 2011 12:04 am
Posts: 5895
First name: Chris
Last Name: Pile
City: Wichita
State: Kansas
Country: Good old US of A
Focus: Repair
Status: Professional
Quote:
Only issue I can see is that with a taper fit chuck you should be very careful not to go too fast or cut too much at a time (which Robbie covers in the vid) and generate too much sideways pressure. Otherwise you could risk the chuck (and bit) coming off.



Possible. Also keep in mind that the bearings on most drill presses are not made for a lot of side pressure. However, at a fast enough RPM and low enough feed rate, I wouldn't expect many problems.

_________________
"Act your age, not your shoe size" - Prince


Top
 Profile  
 
PostPosted: Fri May 13, 2011 5:16 pm 
Offline
Contributing Member
Contributing Member

Joined: Thu Dec 14, 2006 6:44 am
Posts: 319
Location: Canada
First name: Ron
Last Name: Belanger
Focus: Build
Status: Semi-pro
I do like it. I always seem to have some blow-out with my router. I will definitely give this a shot.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 20 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 23 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