584,846 active members*
4,502 visitors online*
Register for free
Login
IndustryArena Forum > CAD Software > Rhino 3D > Rhino - CNC problem
Results 1 to 6 of 6
  1. #1
    Join Date
    Jan 2015
    Posts
    13

    Rhino - CNC problem

    Attachment 268118
    This is maybe more CNC/CAM setup problem than Rhino problem. If you know a better place to post this please chime in...
    I am new to CAD and even newer to CAM (have limited experience with MeshCam so far). I am working up this guitar design with aspirations to CNC rout it ultimately.

    Problem: As you can see, the deck ankle changes from zero to 2.3 degrees just ahead of the bridge.
    The result is that a 3 axis CNC router is going to have trouble putting that negative angle in the neck and pickup pockets. It's only gonna give me vertical walls.
    I can think of 2 solutions:
    1) Go ahead and rout them vertical and then undercut them by hand. Yuck.
    2) Do these 3 pockets as a separate CNC run after tilting the body to make that foredeck horizontal. This will require some careful consideration to make sure the depth of the neck pocket is precisely correct.

    As a neophyte (soon embarking on CNC kit build) I am just wondering about the feasibility of the latter approach.
    I still have an immense amount of work to do to get this CNC/guitar "factory" underway but this is the problem on my mind at the moment.

    (I have been building guitars with hand tools for a while. This is a foray into new territory!)

    Steve

  2. #2

    Re: Rhino - CNC problem

    Given the description and the one screen shot it is not totally understood since I am not a guitar builder. Pockets with under cut walls are a challenge. If the surfaces aren't critical hand cutting them might be fast. You might want to use a special shape cutter and manually program the tool path if the shape is simple. Better description and pictures would help a lot.

  3. #3
    Join Date
    Jan 2015
    Posts
    13

    Re: Rhino - CNC problem

    Quote Originally Posted by spincaster View Post
    Given the description and the one screen shot it is not totally understood since I am not a guitar builder. Pockets with under cut walls are a challenge. If the surfaces aren't critical hand cutting them might be fast. You might want to use a special shape cutter and manually program the tool path if the shape is simple. Better description and pictures would help a lot.

    Thanks for your thoughts. Undercuts are an interesting problem indeed. A tapered bit of some kind would possibly do it as you suggested.
    I think however I'm gonna take the easy way out and just make the pockets vertical. It's not elegant but it is workable.

    Steve

  4. #4
    Join Date
    Dec 2008
    Posts
    4548

    Re: Rhino - CNC problem

    Quote Originally Posted by s_tones View Post
    Attachment 268118
    I still have an immense amount of work to do to get this CNC/guitar "factory" underway but this is the problem on my mind at the moment.
    Steve
    So if you are going to be pumping a lot out, I would make the angle jig to reset the deck in plane. The careful consideration wouldn't really be too hard. You would just reset the zero at that top deck, then the depths of the pockets will be the depth of the pockets... If that angled deck is actually a "curved surface", then you could be sure the top edge of the pocket is set correctly by grabbing that dim from Rhino, then passing that to the machine/pocket.....

  5. #5
    Join Date
    Nov 2008
    Posts
    3
    Steve,
    Try milling the pickup pockets straight. The slight variance in depth from front to back is neglible and can be absorbed by the mounting ring. (Think Led Paul, where the rings are thicker in front than back)
    I'm assuming your design is for a bolt-on neck. A vertical wall would work here, too. The obtuse angle is then milled on the end face of the neck heel when the back radius is being cut to eliminate the gap. In other words, the very end of the heel won't be 90 to the fretboard.
    If it's a glue-in, the fingerboard could feasibly be extended slightly over the end and cover it completely.

  6. #6
    Join Date
    Sep 2014
    Posts
    66

    Re: Rhino - CNC problem

    Hi.
    Just a thought...you could connect the neck pocket with the neck pickup pocket as if it was a setneck guitar or like the rear trem routes in a start. the fingerboard (extended if necessary) and the pickup ring cover the gap.

Similar Threads

  1. Rhino problem splitting OBJ file Part1
    By MetropolisCNC in forum Rhino 3D
    Replies: 2
    Last Post: 06-24-2009, 04:28 AM
  2. Rhino problem splitting mesh Part 2
    By MetropolisCNC in forum Rhino 3D
    Replies: 5
    Last Post: 06-20-2009, 08:05 PM
  3. Replies: 3
    Last Post: 03-26-2009, 11:36 AM
  4. Rhino to 4-Axis CAM Problem
    By skibbey in forum Rhino 3D
    Replies: 1
    Last Post: 04-01-2007, 02:55 PM
  5. DIPTrace DXF to Rhino problem
    By Rhodan in forum Rhino 3D
    Replies: 2
    Last Post: 01-17-2007, 09:51 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •