Beginner Extrude Questions

[monty.alyassiri5DNJW]

Hi There

I am just getting familiar with 3D Cad drawing. I am currently in the process of recreating a small electrical junction box in CAD, but i have stumbled upon a small problem. I am trying to create small raise in the outline of the junction box as seen below in the photos, the areas im referring to are circled. This is where the lid of the junction box will sit flush with on the box.  I cant seem to find the option to create it, any help would be appreciated!

Thank you. 

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[tyas.swinnen]

Hi Monty,

I would suggest to do the following:

• Create a new sketch on the surface you've marked on your picture,
• Project the geometry of the inner rim onto your sketch,
• Offset that geometry to the desired thickness (to create the rim),
• Extrude the rim to the desired height / Or lower the outer parts of the sketch, depends on how you want ti define the height of the part,
• Optional: add a small fillet on both sides of the created rim.

[Thomas_Savage · Accepted solution]

Hello @monty.alyassiri5DNJW 

One way you could create this is by sketching the profile, then using the sweep feature to sweep where you need it to sweep around. Which looks like the cut out. So you could use the edge of the cut as the path. 

If you need more help attach your .IPT and i will show you.

Hope this helps?

[tyas.swinnen]

This is also a very good method, I was going to suggest that as an alternative 🙂 

[mcgyvr · Accepted solution]

3rd option (and likely the fastest) is to turn on the "Plastic Part" section of the 3d model ribbon and use the "Lip" function to build that (then apply the fillet)

Same function can be used to create the groove on the mating part.

https://knowledge.autodesk.com/support/inventor/learn-explore/caas/CloudHelp/cloudhelp/2019/ENU/Inve...

But both suggestions above are great practice for a beginner.. Heck.. Do it all 3 ways to sharpen your skills..

[johnsonshiue]

Hi! This can be done in several ways in Inventor. You can use the Lip feature in Plastic Part panel (right-click on the ribbon -> check Plastic Part).

Another easy way is to use surface modeling. Create an offset surface from the inside faces. Then extend the top edges of the surface. Thicken the surface to create the lip.

Many thanks!

[Casey.P · Accepted solution]

Thanks @mcgyvr for bringing this option up! I actually did not know about that feature (I've barely touched the Plastic Part section) so this was super easy!

@monty.alyassiri5DNJW,

You will have to select a path edge and face first, then in the lip tab of the lip menu command, you can play around with the shape and location from the edge:

If you don't use that method, then sweep would be your best bet. You can model the exact shape you want and have it follow a sketched path that you want.