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  3. how show Assembly Top subclass on 3D canvas

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how show Assembly Top subclass on 3D canvas

eddoh
eddoh 8 months ago

Hello everyone,

I suppose that on 3D Canvas (Orcad 24.1) I should be able to see the lines of the 'Assembly top' subclass besides the Silkscreen top. The 'Assembly top' subclass has got contents, lines have thickness 0.1, 
In the visibility options i cannot see it in the visibility pane (just silkscreen, pastemask, soldermask).

Is it even possible? 
Apologies, it must be a really trivial question but after 2 hrs and unsuccessful questions to AI, I have to give up and seek advice here.

Thanks!

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  • steve
    0 steve 8 months ago

    I can't find a way to this either but I'm not really suprised since the Assembly top subclass is a documentation layer. The 3d Canvas is there for a representative view of the board in 3d so silkscreen, masks would be the usual option. What is on the Assembly layer that you need to show in 3d?

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  • eddoh
    0 eddoh 8 months ago in reply to steve

    oh, thanks Steve.

    I thought that Assembly top was there to add assembly level info (not related to individual components).
    I'll use silkscreen. Even if I am now confused what assembly top is for (and if it going to be printed on PCB in production. And why there are refdefs there).
    Or maybe it's just for viewing during development. Even if at this point I don't know how it will ever be viewed. I'm too fresh at this, alas.
    Thank you for your reply. Many of your replies in this forum have saved me so much time. 
    Highly appreciated.

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  • eddoh
    0 eddoh 8 months ago in reply to steve

    oh, thanks Steve.

    I thought that Assembly top was there to add assembly level info (not related to individual components).
    I'll use silkscreen. Even if I am now confused what assembly top is for (and if it going to be printed on PCB in production. And why there are refdefs there).
    Or maybe it's just for viewing during development. Even if at this point I don't know how it will ever be viewed. I'm too fresh at this, alas.
    Thank you for your reply. Many of your replies in this forum have saved me so much time. 
    Highly appreciated.

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  • steve
    0 steve 8 months ago in reply to eddoh

    You are welcome. For information back in the day we used to produce Assembly drawings which show where the parts are fitted. You could include notes, parts list balloon items to tell production where items were fitted on a board or any special assembly instructions. This is usually what the Assembly based layers were used for. There is Silkscsreen layers for items actually printed on the board by the board fabricator. Not sure with automation now whether people still create assembly drawings or not but they were always a good reference documents for production, inspection and test departments.

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