Guitar neck modeling question

Hey guys, guitar builder here!

Is there a way to set up some sort of system where you can input values, and the model changes accordingly? Is that what they call parametric? Let’s say I want to quickly change the neck thickness or width without having to model a whole new neck. Thanks in advance.

Neck blends on both ends become really quite complicated. While there are a lot of guitar makers using Rhino, the parametric part can be a real challenge.

Not sure if you have this persons stuff? https://www.youtube.com/playlist?list=PLtQDVRMUYN-yjackAgTZnGj1CbqZDtmsV

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Hi @AnkaCustom
I am using Rhino for guitar building and have found the Grasshopper plugin to be very effective for this.

I got started with it in order to simplify creating and modifying multi-scale fretboards and cutting them out with a CNC router.

It was a pretty steep learning curve but ended up being so satisfying to achieve that I kept on going to generate the whole neck, then eventually the whole body as well.

So yeah I’d recommend starting with simpler parts like the fretboard, and possibly the nut, then try the rest of the neck.

Scott is absolutely correct that the blends at the headstock and neck heal are harder than any other part, but they can be done and really help you understand complex surfaces.

Hi @AnkaCustom,

I understand your frustration. Basically Rhino is not a parametric program. Grasshopper has powerful tools to make parametric models but you will need to invest a significant amount of time to master it. If you frequently need to make many small changes and don’t want to remodel with Rhino’s toolset I would suggest you either change to a parametric modeler, or maybe better yet learn Grasshopper.

One question that I find is not really addressed with “automatic” parametric models is design intent. Are you really satisfied the result? I have opted for committing to learn to create and modlfy surfaces as best as I can, so making changes to a model are not so difficult. Also the model can be manipulated relatively easily to adjust all the other little details that may come into play after you make the primary changes. This way I am able to better control the end result rather than just settling for an automatic solution that may lack the grace and flow I want.

If you may want to explore this option I highly recommend starting with the incredible videos by @sgreenawalt

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