Help

[robinsoncr]

I'm having a little issue here. I need to redraw the neck pocket on this guitar but I'm not sure how to eliminate the existing neckpocket, resurface then draw in the new neck pocket!

The neck pocket is out of alignment. Any help would be greatly appreciated! And yes, I screwed up and pocked the pickup and neck pocket cavities too deep. That was my error and not the fault of MadCAM!

Plus, if anyone feels froggy and would like to help me draw a neck that with a 25" scale, would be great! I wanted a neck that is 2.25" wide at the 22nd fret and 1.75" wide, .55" thick at the 12th fret (without fretboard) and .5" thick at the 1st fret (without fretboard). I'm having trouble blending between the neck's heel and the contoured neck and between the neck and the headstock. I was going to tilt the headstock 7degrees too.

Learning how to blend surfaces like this is driving me nuts!

BTW, it took 32 minutes to machine the top surface of the guitar using MadCAM!

Thanks,

Chris

[FAJ]

Hi Chris,

What I do is create some views of the neck: longitudinal section, peghead, fingerboard and transversal sections at two points. Then I put them together, like this:



For making the main back section of the neck, I use a sweep2. Then I make the base of the heel and sweep1 for the heel:



For both sweeps, remember to select both end curves for the cross-sections. The rail in the sweep1 is the heel part of the longitudinal section.

Making the peghead transition is a little more complicated. I use a curve on the peghead surface (black in the first picture) and intersect the plane containing it that is perpendicular to the peghead surface with the surface that extends from below the peghead and follows the longitudinal section. It is not easy to explain, so here are some pictures:




After a sweep2, a mirror to copy the surface to the other side and a patch to make the surface between those two, this is how it looks:



The success of this procedure lies in the correct drawing of the curve on the peghead.

[robinsoncr]

FAJ,

Thanks for the reply! I'm going to print this and play with it. There's still so much to Rhino3d that I haven't learned yet.

Chris

[FAJ]

There is a something wrong in my explanation. For the main portion of the neck, I use two sweep2. The rails are one of the fingerboard edges and the longitudinal profile, then the other fingerboard edge and the same longitudinal profile. A single sweep2 will not necessarily follow the longitudinal profile. Sorry for the mistake.