Set origin at the center of an object

[kiko_lobo]

I am having a hard time finding a way to center my origin efficiently.  I am designing a longboard and now its time to make the holes for the trucks. I need precise measurements and also want to make precise features but in order for me to be parametric I need my origin centered and I haven't find a good way to do this.

Does anyone has a solution?

Thank you in advance.

[TrippyLighting]

Please share your design. Export as .f3d and attach to your next post.

In general, you don't usually first design an object and then center it. 

[kiko_lobo · Accepted solution]

Thank you for your response.

I agree with not centering afterwards but I am new to design and have been battling with different kinds of tools to make the board and ended up on a weird spot. Even if its not the origin that its centered, I haven't been able to even create a point in the middle of the deck.
here's the design:

[Brady_Fulton · Accepted solution]

It's a funky model to start with but I was able to create some midplanes which will allow you to make the hole patterns that should get you going the right direction. Welcome to the modeling world, you've got some things to learn, but you're starting with a project that is interesting and fun so stick with it and don't be afraid to start over again and make it from scratch a few times, I promise, you'll get more proficient everytime. 

[kiko_lobo]

Thank you so much for your help. I will start again like you suggest.

Can you please give some guidance on how would you tackle this model.

I need in one part an organic shape. But I also need dimensions to make precise measurements and to include the trucks. However I don't know what would the best practice be.

Any help to make my new model better, would be appreciated.

Would you make your model with the origin at the middle or on one corner?

[kiko_lobo]

Let's say I have this flat model...


https://gallery.autodesk.com/fusion360/projects/longboard-1

how would you curve it?

Maybe I should start with a flat model and then bend it some how... but how?

[etfrench]

If you closely inspect the sketch in this file, you'll find the model isn't centered on the origin.  The rectangular bounding box is off by .0002" on the X axis and the Y is off .001825" 

Fusion 360 doesn't expose the properties of sketch entities, which makes it hard to verify how accurate a model is.  If you export the sketch as a dxf and view it in a 2d cad program which shows endpoints, you can easily see the error.

@kiko_loboDo a search on the forum here for ship hull and also airfoil designs.  The techniques used in those are very similar to what you need.

[kiko_lobo]

Thank you! Will do!

[Anonymous]

Under the inspect tab, use center of mass. 

Inspect/center of mass

[TrippyLighting]

The center of mass is not the origin!

[Anonymous]

Pardon me, I do see that now. While it perfectly centered on the object I first used it on, it is not able to be used to reference any point. I have only been using CAD programs for five years so I guess I never imagined that such a comprehensive platform would have left out such a useful standard functionality. Now the limits of my imagination have been expanded. 🤔🤔