Hi all, new to the forum and Shapr3D. I come from the 2D world (ie. Illustrator, CorelDRAW, Affinity Designer, etc.). Ergo, I do all my sketches in these programs, export to DXF and import to my project - works well and saves me a lot of time (frankly, don’t find Shapr’s sketching tools that good TBH)! Anyways, I’m designing a solid body, electric guitar to CNC. I wish to create tapered, chamfered contours on the front face of the body (see screenshot - areas to be contoured/chamfered are visible via the outlined areas in orange). Can anyone share with me what the best tool is to do this, or combination of tools and their order? Many thanks in advance! [Guitar screen shot]

See your contour lines? Create a plane on the point of each of the line. Then sketch a “cutting shape” to sweep along the lines on the plane. Like a cutting tool.

Similar to this but instead of adding your cutting away with the sweep. Same principle. [image] A fine thin curve on the outer edges only Need help? We are here. SWEEEEEEEP. grin [sweep1] [sweep2] [sweep3]

I think I understand. Note: the depth of the chamfer at the midway point between the two tapered ends, will end up being deeper than where they will be at the tapered ends. Does this change anything you’ve suggested?

Here is a screen shot of a similar “cutaway” on a guitar I wish to recreate as a visual reference. Not sure if this changes how you suggest to go about it. [149384_0_wide_ver1680005137]

You could shave that part by sketching combined with loft to subtract/shave out of the guitar body. Think more like creating distorted oval saucer and using it to subtract. [image]

[image] SCALEMODEL: Think more like creating distorted oval saucer and using it to subtract. Just a proof of concept [image]

Something else to look at. (I’d turn off the sound if I were you.) [3D Modeling Guitar Body on iPad]

I had thought of this, in fact, I did something similar on another design and used a “globe” to subtract a tummy cut contour on the back side and it worked fairly well. The problem with this method, however, I think, is it won’t work on the “forearm” contour over the top edge of the guitar body. But, I could be very mistaken.

Funny you should reference this, I found this video a while back and used it to do “forearm” and tummy" cut contours on an old design I did. But since then, Shapr3D has changed their menus/commands/tools and this can no longer be done this way (shame!). It appears now that when you radius or chamfer the edge of the guitar (where the top and side faces meet), the whole perimeter (chain) gets chamfered/radius’d. Where in this video, if I’m not mistaken, the ‘chain’ is limited to the immediate area he is filleting and does nothing prior to limit this.

Yeah, I can see how that would work. But again, I can’t see how subtraction from a sketched element applied to the body can do the “forearm” contour. That said I will certainly try to use this method on the cutaways for the top and bottom horns of the guitar . . . . at least that would be done.

Tapered, chamfered contours

Workshop Modeling Questions

Oregonerd June 28, 2025, 7:13pm 3

Similar to this but instead of adding your cutting away with the sweep. Same principle.

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Tapered, chamfered contours

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