Creating a 2d miter template from a 3d intersected tube

[ItsBehindYou]

Hi all,

I'm under a new account but I am a user from a number of years ago, regular here in working out how to design bicycle frames. 

I have a bicycle frame designed up using tubes, which need to be cut according to the angles and diameters of the interfacing tubes. Can anyone assist in how I would go about taking the surface of a 3d CAD tube and representing it in 2d, showing the edges of the tube - the profile to be mitered? I will then plan on printing the miter profile, wrapping the 2d representation around the physical tube and then mitering to meet the design.

Thanks very much,

[JDMather]

Attach example file here.

This topic has been covered here many many times in the past and you should get a solution using your example fairly quickly.

[ItsBehindYou]

Thanks for offering,

I've uploaded to Autodesk Drive and the file can be found here: https://autode.sk/3dDfzts

[ItsBehindYou]

 I'm going to post this question to a facebook community group too,  but any guidance that I can get would be greatly appreciated. Just to reiterate the question; I have tubes with a circular profile that intersect, and I am trying to obtain the surface of these tubes as a 2d  sketch that I can print and use as templates to cut and mitre the tubes ends. I could do with some tips on how to go about this process, thanks in advance.

[JDMather]

Reply to Message - Autodesk Community

[ItsBehindYou]

Thanks for creating an example 👍

It's been a while since I last used the forum, but I remember there being a user whom indicated he preferred to work with models uploaded through Autodesk Drive. Also, I retain control over the model rather than have it left in the forum for perpetuity . Sorry if either of these have inconvenienced.

I haven't yet been able to replicate what you have produced, but here were my steps:

• make part > opened in new assembly,
• Convert to sheet metal,
• placed two points at the ends of the tubes,
  • I noticed that you had used some work planes to get the points along a curve, so I've attempted to replicate this.
• Used 'rip' to try to create a parting line between the two points
  • This didn't work and I noticed you'd used 'gapsize / 10ul' - I copied this into my own 'rip' specs which it green lighted. I don't fully understand the 10ul which must be a measure / unit.
• The rip fails at this point and I can't follow your example any further. 

Can you direct what other steps I have missed to have fully followed your model? I've added the model I've been learning with.

[blandb]

Where your work point 3 is, there is something weird going on there with the bevel, zoom in and see.