Wipeout Problem

[JEFFJW9BB]

I drew a perforated screen, it is a lattice panel - a block.  I want to put it over some lines but I want the bars to wipeout the lines below and only have the lines show through the open squares of the lattice.  see attached drawing please.

I know how to do it with a simple polyline rectangle but how do I do it with a block?

Any suggestions?

Thanks

[maxim_k]

Hi @JEFFJW9BB ,

You can create WIPEOUTs and put them inside block.

If you don't want to see wipeouts borders, set WIPEOUTFRAME=0

See attached drawing.

[JEFFJW9BB]

Thank you. Very helpful!

I studied your solution and tried to reproduce what I think you did. I created a wipeout element then pasted it into the block.  It works but I can't figure out how you were able to avoid seeing the edges of the element where they fit against each other.  When I turn off the edges in Frames (0) the whole thing is invisible; not helpful.

Did I not make my polygonal element correctly? see attached

Appreciate your help!

[maxim_k · Accepted solution]

Hi @JEFFJW9BB ,

At first, I exploded your block, then exploded rectangular array inside it, created wipeouts.

Then I used DRAWORDER command to send wipeouts to back and turned off wipeout frame.

And finally - I created block from these objects.

[JEFFJW9BB · Accepted solution]

WOW! IT WORKED!.

Thank you so much.

[JEFFJW9BB]

I made the nice lattice panel block with the wipeout feature but it only seems to work in the file in which it was created.  When I use the block in another file it does not.   Why do you think this is?

I attach the "wipeout test" file where I created it

and the "L Elevations test" in which it does not.

Jeff

[maxim_k]

Hi @JEFFJW9BB ,

That is because the block with the same name was in the drawing "L Elevations test" and when you insert block with wipeouts to it, AutoCAD uses block from the current drawing.

You can - rename old block in the destination drawing or purge it from the destination drawing. Then you can insert new block with wipeouts and it will work.

I renamed block in the "L Elevations test" drawing and then copy - pasted block from "wipeout test" to "L Elevations test" - see attached drawing.

[pendean · Accepted solution]

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@JEFFJW9BB wrote:

...I attach the "wipeout test" file where I created it

and the "L Elevations test" in which it does not.

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AutoCAD Rule #1: named elements from outside a DWG file is never used if that same-name element inside the file.

These elements include Blocks, Layers, Linetypes, dimension styles, text styles, leaders, mleaders and more.

Never forget it.

HTH

[JEFFJW9BB]

I tried to paste the block to a file that did not have (I looked carefully) one of the same blocks and it did not work.  I purged the blocks then repasted and it worked (!). 

I'll have to look up AutoCAD "purging" on-line because I don't know what that action meant to the other blocks in the file.  They all look ok so am relieved.

Thank you again.

Jeff

[JEFFJW9BB]

Thank you for the advice!  

[pendean · Accepted solution]

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@JEFFJW9BB wrote:

...I purged the blocks then repasted and it worked (!). 

....I'll have to look up AutoCAD "purging" on-line because...

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Blocks do not get removed from a DWG's database just because you erased the one nd only copy of it in the file: much like "empty" layers for example, they remain present until you take the extra action of removing them completely from the DWG file. That's where PURGE command comes in

https://mgsglobalgroup.com/2023/09/25/cleaning-your-autocad-files-for-better-performance/#:~:text=Th... 

HTH