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02-14-2009, 01:14 PM
|  | Registered User | | Join Date: Jan 2009 Location: The Netherlands | |
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Quote:
Originally Posted by Ol'Bass'ead  Be careful on your 'acoustic' holes that you dont get the neck heavier than the body and get neck dive-nothing is worse than neck dive. | I know. What does a regular neck weigh? The mahogany is heavy enough I think, but I want to be sure  . Quote:
Originally Posted by Ol'Bass'ead And what kind of neck are you using? (or did I miss that?) | Using a neck? I am going to make a neck.. but first I'll build the body... one thing at a time  |
02-15-2009, 04:52 AM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Relief! I routed the body (after testing on some scrap piece first of course) and it came out sooo sweat!!! I was a little bit nervous, since it was my first router job, but the result is simply stunning!
So now I'm going to plan my next steps carefully and enjoy the result before I dive into the semi-hollow thing...
Photographs!
Got the safety wear: 
Started routing (first of two passes): 
Ready routing: 
The result:  |
02-15-2009, 11:56 AM
| | Registered User | | Join Date: Mar 2006 Location: St. Louis // St. Charles, MO | | | Very nice!
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On Groove Duty
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02-15-2009, 12:08 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by tZer Very nice! | Thanks! Although there's one thing which concerns me.. you can't really see it on the photo, but the router burnt some parts of the body sides, is this easy to sand off later on? Or am I stuck with opaque paint? |
02-15-2009, 12:16 PM
| | Registered User | | Join Date: Mar 2006 Location: St. Louis // St. Charles, MO | | | Sanding is your friend! You should be able to sand out that pretty easily.
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On Groove Duty
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02-15-2009, 12:37 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by tZer Sanding is your friend! You should be able to sand out that pretty easily. | Okay, thanks. I'll do that after glueing on the top, since my edges are very clean right now and I don't one to spoil that before glueing. |
02-18-2009, 02:02 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | The last few days I worked on the cavities to convert this body into a semi-hollow one: designing, sawing and smoothing the template and routing them.
I did it with a router and a template guide, layer by layer (about 1 mm each time). Then, I used my template bit with ball bearing to do the edges (since my template is 1:1 size).
It came out very nice and the weight dropped like alot! Also, the sound changed remarkably when I tap on it. Much more percussive and acoustic . I'm very curious how it's going to sound.
Some pictures:     
When I finished the body and picked it up I immediately thought I should do another cavity in the upper horn to get better weight distribution... |
02-18-2009, 07:58 PM
| | Registered User | | Join Date: Jan 2008 Location: Nebraska | | | in case you were wondering, the hollowness does not have to be equal on each sides for it to sound right. did a lot of simalar research for my build. how much wood is there left on the back where the chambers are?
Also, obviously you are not going to be able to do a front arm contour. are there plans for a stomach contour?
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02-19-2009, 02:06 AM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by jordan_frerichs in case you were wondering, the hollowness does not have to be equal on each sides for it to sound right. did a lot of simalar research for my build. | Do you mean on each side of the centerline of the body or on each side regarding the brigde area to the upper horn? In the latter case, how's the final weight distribution? Quote:
Originally Posted by jordan_frerichs how much wood is there left on the back where the chambers are?
Also, obviously you are not going to be able to do a front arm contour. are there plans for a stomach contour? | The body is 40 mm thick and the cavities are about 24 mm (just under an inch) deep. So there's still 16 mm left on the back, which is pretty much, but I didn't want to loose too much weight (prevent neck dive) and I want to leave some room for a stomach contour, but I'm not sure on that. The front arm contour is not possible, I know.. but my body is too small to have the sound holes, leave enough room for the middle section and have an arm contour all together..
Last edited by roberthabraken : 02-19-2009 at 02:09 AM.
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02-19-2009, 07:54 AM
| | | wow, thats lookin awsome. no sound holes? those were gonna look awsome. you gotta figure out a way to do it. i mean, theres like a whole freakin page just about the sound holes 
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Originally Posted by Beej
ninefinger read my mind... A 32 foot scale bass? Who's going to play it? 90 foot jesus?
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02-19-2009, 08:02 AM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by vbasscustom wow, thats lookin awsome. no sound holes? those were gonna look awsome. you gotta figure out a way to do it. i mean, theres like a whole freakin page just about the sound holes | thanks!!!
.. and sorry, but I don't understand why you think I left out the sound holes (or maybe I don't understand you  ), but this are the chambers, the sound holes will be in the maple top. Think I'm going to add an extra chamber in the upper horn though..
*edit*
Ahh.. I think I've got it  : Quote:
Originally Posted by roberthabraken but my body is too small to have the sound holes, leave enough room for the middle section and have an arm contour all together.. | I meant I'm going to leave out the arm contour to have the sound holes and chamber.. instead of the other way around!
Last edited by roberthabraken : 02-19-2009 at 08:04 AM.
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02-19-2009, 08:06 AM
| | Registered User | | Join Date: Mar 2006 Location: St. Louis // St. Charles, MO | | | If I read it correctly, the sacrificed feature is the arm contour, not the sound holes.
[EDIT:] Apparently I read it correctly. ;-)
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On Groove Duty
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02-19-2009, 01:57 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Today I added the extra chamber I was thinking about and I must say it's much better! Weight distribution feels better & looks better (although I'm only going to enjoy that for a brief period of time ). Also the tapping sound improved.  |
02-19-2009, 02:35 PM
| | Luthier: JC Basses | | Join Date: Oct 2006 Location: Auburn, CA | | Quote:
Originally Posted by roberthabraken Today I added the extra chamber I was thinking about and I must say it's much better! Weight distribution feels better & looks better (although I'm only going to enjoy that for a brief period of time ). Also the tapping sound improved. | I would try to connect those areas so that the sound can travel throughout the entire chamber. |
02-19-2009, 02:35 PM
| | Registered User | | Join Date: Jan 2008 Location: Nebraska | | Quote:
Originally Posted by roberthabraken Do you mean on each side of the centerline of the body or on each side regarding the brigde area to the upper horn? In the latter case, how's the final weight distribution?
.. | i ment on the centerline, but it probably goes both ways. just something i read at mimf and thought it may be useful. going pretty sweet so far. what are the neck and fingerboard going to be? whats the neck joint method? i made the mistake of routing the pocket before te neck on my first one. it is much better to make the template from the neck that is ready, than it is to make a pocket, then try and make a neck to fit that pocket.
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02-19-2009, 02:42 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by Jeronimofesto I would try to connect those areas so that the sound can travel throughout the entire chamber. | Well, I separated them on purpose. First of all, this is more rigid and secondly, I'm afraid the odd shape that would create creates a nasty feedback effect of the sound.. |
02-19-2009, 02:46 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by jordan_frerichs i made the mistake of routing the pocket before te neck on my first one. it is much better to make the template from the neck that is ready, than it is to make a pocket, then try and make a neck to fit that pocket. | Yeah I read about it in several books.. I think it's obvious though
I haven't decided on the neck. Think it's going to be maple / rosewood.. could be a bolt-on, but may be glued.. don't know yet |
02-19-2009, 03:05 PM
| | Registered User | | Join Date: Nov 2008 Location: cincinnati | | that thing looks amazing. i could go for one in 5 string
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02-19-2009, 03:21 PM
| | Registered User | | Join Date: Jan 2009 Location: The Netherlands | | Quote:
Originally Posted by sonic assassin that thing looks amazing. i could go for one in 5 string | Thanks a lot! I'm pretty happy with it myself too. |
02-19-2009, 04:45 PM
| | Registered User | | Join Date: Jan 2008 Location: Nebraska | | Quote:
Originally Posted by roberthabraken Yeah I read about it in several books.. I think it's obvious though
I haven't decided on the neck. Think it's going to be maple / rosewood.. could be a bolt-on, but may be glued.. don't know yet | i like maple, but the top it maple, so that might not look that great. i am not a fan of rosewood in custom builds. used too often, and i like things that dare to branch out of the box. i am curious if it will be fretted or fretless. personaly, i think a purpleheart fingerboard would go nicely with that top.
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