I am new to Inventor and 3D modelling. I have gone through the three tutorials that comes with Inventor on modelling a part. I am now trying to model a fuselage for an RC plane and am trying to copy a spline from one work plane to a new one and link them together so that if I edit one, it is reflected in the other. Copying and then pasting into the new plane doesn't link the two splines together.
If anyone can point me in the right direction would be greatly appreciated.
Start a new Sketch in the new plane and use the "Project geometry" tool and pick the geometry from the first sketch to transport that geometry for the new sketch.
You will need to dimension (parametric) the sketches to link them together so that one can have dimensions as functions of another.
otherwise Project Geometry if the dimensions aren't going to be different between the two sketches.
But if the dimensions aren't going to be different - why would the second sketch be needed?
Thanks for the link to the PDF JDMather.
I should probably tell you my end goal as I may be using an inappropriate technique. Once I have the model of the fuselage, I plan to get it CNC'd out of foam a couple of mm smaller than the modelled size so I can then fiberglass it a little oversize. Then I will get it CNC'd to size. Then I will make the fiberglass molds from the plug.
I thought the right approach would be to create the "ribs" along the Z axis and then loft them together. When selecting the planes in a single loft, it balloons the fuselage.
When I loft it in 2 discrete steps, I loose a nice blending between the two.
Am I taking the right approach for my end goal? The other approach I have thought about is making splines along the Z axis (the length of the fuselage) to make "stringers" and then make surface from there.
Thanks for the help,
.... When selecting the planes in a single loft, it balloons the fuselage.
Create Guide Rails for absolute control.
I recommend you do my Vacuum tutorial.
Unfortunately most of them are rather old now.
All should still work (there is a problem in the "horseshoe" sketch in the test instrument file, I don't recall if I fixed it).
But there are a lot of new tools that didn't exist back then.
The Vacuum tutorial is fairly recent and has some simularity to your current design.
I finally had some time to work through the tutorials and then have another go at what I was trying to achieve. I created a nose plane, then put the main cross section on the next plane. I then projected the geometry on the next 4 sections and made the last section have a circle for rear of the fuselage. I used splines for the rails in a 3D sketch.
When lofting now, if i select all the sketches and rails I get an error saying that one or more of the rail curves doesn't intersect one or more sections.
If I change the loft to be from the first section and to the last section without selecting the intermediate sections, The loft ends up with waves between the rails.
Looking side on to the rails, you can see that because I used splines that the curve doesn't go to the sketch on the cross sectional sketches. However, I anchor the spline to the points on the sketch.
To satisfy the error when doing the loft, is the right process to then project the rail geometry back to the sketches and create a "bulk head" using the those points?
Thanks in advance for any guidance,