Official Luthiers Forum!

Owned and operated by Lance Kragenbrink
It is currently Thu Mar 28, 2024 7:15 am


All times are UTC - 5 hours





Post new topic Reply to topic  [ 10 posts ] 
Author Message
 Post subject: Digitizing Probe
PostPosted: Wed Jun 03, 2015 10:08 pm 
Offline
Mahogany
Mahogany
User avatar

Joined: Mon Mar 16, 2009 10:56 am
Posts: 53
First name: Daniel
Last Name: Henriks Madureira
Country: Close to the great white north
Focus: Build
Status: Professional
Hey guys,

Just thought I'd share my latest project.

A digitizing probe to use with Mach 3. I'll by using it mostly to reproduce pickguards and guitar necks.

I had a few customers lately that wanted to have custom pickguards done, but only had a hand sketch or a piece of poorly cut mdf with the final contour. So I decided to take the plunge and do a probe myself. I'll be able to digitize archtops and other cool stuff. But i'll be using it mostly for contours.

Done with a 3D printer, 80% fill-out. It's almost solid plastic, i was amazed at the quality.

Wadda ya think ? :)

Image
[img]https://lh3.googleusercontent.com/3VerWs47I4W4Q_YEN-d3SOAGzUVghAnXNV2gA4PmLh4=w1075-h806-no[img]
[/img]https://lh3.googleusercontent.com/5BckFYYrm2KhJ-3nBEGoMrXFEqxI3PaGVkpzbOAD2r0=w1075-h806-no[/img]
Image
Image
Image
Image
Image

_________________
CNC is a tool, not cheating :)


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Thu Jun 04, 2015 11:11 am 
Offline
Cocobolo
Cocobolo

Joined: Mon Mar 03, 2008 6:51 pm
Posts: 488
Wow, that's really cool!


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Sun Jun 07, 2015 2:43 pm 
Offline
Mahogany
Mahogany

Joined: Mon Aug 20, 2007 2:25 pm
Posts: 53
Location: United States
wow! cool!

Show more


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Sun Jun 07, 2015 10:55 pm 
Offline
Koa
Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan
I think it takes a lot of CAD work to get the data to be meaningful. You are certainly qualified.. keep us posted.

_________________
Ken


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Mon Jun 08, 2015 4:50 pm 
Offline
Mahogany
Mahogany
User avatar

Joined: Mon Mar 16, 2009 10:56 am
Posts: 53
First name: Daniel
Last Name: Henriks Madureira
Country: Close to the great white north
Focus: Build
Status: Professional
Well...it can be challenging if you want to digitize a free-form shape, and reverse engineer the skin...

However, my plan is to use this to copy existing templates, and body contours. I had some requests for that. People that want a new pickguard with the same shape of an existing one.

I also had a request for a jazz archtop sitka top...the existing one is cracked, and the gentleman wants a new one exactly like the old one...So i'm gonna use the probe to scan the sections (curtate cycloids) and redo the top like this.

Here are a couple of more pics of the setup process. I need to figure out a way to correct a signal issue i'm having right now.

Any questions, fire away!

Image
Image
Image
Image
Image
Image

_________________
CNC is a tool, not cheating :)


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Mon Jun 08, 2015 9:17 pm 
Offline
Koa
Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan
cool stuff. Seems to me if you are doing the retop thing and using CC to arch across, then you only need to scan the long arch.

Use that data with the perimeter outline to create the new cross arches. How many cross arches are you going to import into the CAD drawing?

Why are you using CC if you are copying an existing arching?

_________________
Ken


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Tue Jun 09, 2015 8:53 am 
Offline
Mahogany
Mahogany
User avatar

Joined: Mon Mar 16, 2009 10:56 am
Posts: 53
First name: Daniel
Last Name: Henriks Madureira
Country: Close to the great white north
Focus: Build
Status: Professional
Those are some very valid points you have there.

But from my experience, a guitar top that is re-engineered from a point cloud or even of scans of a cross sections, always show very acute imperfections.

I'm not even sure that the archtop in question has CC's as cross-sections.

But the gathering of data will be for reference only. Then, I can rebuild all the cross sections, with proper simetries and build the skin from those.

I have worked in the past with laser scan raw data for this kind of job, and it's really hard to get a smooth surface that will look like an actual guitar top...

_________________
CNC is a tool, not cheating :)


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Tue Jun 09, 2015 9:25 pm 
Offline
Koa
Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan
Yep, sounds familiar...
I wonder what a perfect copy would look like from the data you get.
I see your point about correcting the imperfections though. Sinking from bridge pressure would need to be corrected back to where it was without bridge pressure etc...

_________________
Ken


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Fri Jun 12, 2015 8:10 pm 
Offline
Mahogany
Mahogany
User avatar

Joined: Mon Mar 16, 2009 10:56 am
Posts: 53
First name: Daniel
Last Name: Henriks Madureira
Country: Close to the great white north
Focus: Build
Status: Professional
It works!!!

Next, calibration time and then we'll tackle the first part : a cracked L5 top that will be reverse engineered.

[youtube]http://youtu.be/ExCCPhrxZdc[/youtube]

[youtube]http://youtu.be/rzCXbhGFC_4[/youtube]

_________________
CNC is a tool, not cheating :)


Top
 Profile  
 
 Post subject: Re: Digitizing Probe
PostPosted: Wed Jun 17, 2015 10:19 pm 
Offline
Mahogany
Mahogany
User avatar

Joined: Mon Mar 16, 2009 10:56 am
Posts: 53
First name: Daniel
Last Name: Henriks Madureira
Country: Close to the great white north
Focus: Build
Status: Professional
Here are a couple more videos... Any comments?


[youtube]http://youtu.be/xagPydivHCw[/youtube]

[youtube]http://youtu.be/G8_4pvsMRlA[/youtube]

_________________
CNC is a tool, not cheating :)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 12 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