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(ref: 29-04-13)

Inventor - Cast & Machined Part Drawing View

Hello again comrades!

I’ve been meaning to blog on this topic for a while as it comes up a lot  – How can I show the outline of my original cast part in a machined part drawing view (just like I’ve done in the picture above)? Well as with most cases like this in Inventor, there’s more than 1 way to do this. The two most common methods would probably be as follows:

Method 1: Derive

1)      Create your cast part file

2)      Derive this cast part file into a new machining part and produce your machining operations as cut features.

3)      Create an associative sketch in the cast part using ‘project cut edges’, that can be made visible as reference lines in a drawing view of the machined part if required (to show the depth of machining etc)

Method 2: Assembly Features

1)      Create your cast part file

2)      Place this cast part file into a new assembly and produce your machining operations as assembly cut features.

3)      Place the cast part into the assembly a second time, and place directly on top of the original cast part. This second cast part won’t be affected by the assembly cut features you’ve already made.

4)      Switch the BOM structure of the second cast part to ‘reference’ (and make it invisible perhaps)

5)      Now when you create a drawing view of the assembly, the cast part outline will show (by default) as dotted reference lines

There are other variations on this. And also you can use iParts for cast and machined versions of a particular component. However my personal favourite by far is Method 1 and I’ll tell you why – it’s far less effort to produce, doesn’t require any messing with assembly structures (producing a part file as an assembly file using method 2 is less than ideal!), and is more flexible.

So without further ado. I reckon a nice step-by-step video here for Method 1 will be just the ticket. Enjoy!

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