Two parts: A and B. How to generate (A - B) and (B - A)?

TheCipster

Hi,

I am very new to Onshape and CAD design in general and I have a question for the experts here.

One of my colleagues at work designed our team's logo and I, as a 3D printing novice, took upon myself its conversion to a 3D object to be printed.

The logo consists of two partially overlapping letters of two different colors.

The idea is to design two objects that will be printed separately and then glued together.

I managed to create two separate parts that replicate faithfully the shape of the letters. I also managed to somehow create the "carved" versions of the same

letters so that they can be later fitted together. The total height of the model is 6mm and the overlapping parts are each 3mm thick.

Another description of what I'd like to achieve is this:

• I have two parts: A and B.
• I need two other parts (A - and (B - A), each exportable as a separate STL.
• When generating the differences the two parts must be placed in a specific relative position.

I am sure I have done it in a very convoluted way. How would the experts tackle such task?

Thanks a lo in advance.

My document.

First print:

eric_pesty

Like this:



https://cad.onshape.com/documents/ba7ed81b6c6d815f1d1fb47f/w/8280151c563cc6881c7578ae/e/5cb322ab529c79bf16ff352e?renderMode=0&tangentEdgeStyle=1&uiState=6674b74b682daa1a06186b70

With parametric CAD the general idea is to draw things in the correct place and fully constrain sketches to make things easy to edit after the fact if needed...
In this case it allows me to use the sketch that makes part 1 to cut away from part2, then boolean to remove the matching material from part1 

eric_pesty

Like this:



https://cad.onshape.com/documents/ba7ed81b6c6d815f1d1fb47f/w/8280151c563cc6881c7578ae/e/5cb322ab529c79bf16ff352e?renderMode=0&tangentEdgeStyle=1&uiState=6674b74b682daa1a06186b70

With parametric CAD the general idea is to draw things in the correct place and fully constrain sketches to make things easy to edit after the fact if needed...
In this case it allows me to use the sketch that makes part 1 to cut away from part2, then boolean to remove the matching material from part1 

TheCipster

Hi Eric,

Thanks a lot for the answer, your document looks very interesting.

Using depth + offset together with a remove is a much better solution and allows me to use the original sketches without unneeded copies.