How to dislodge Union

Hi everyone,I need a fix for something that I cant figure out this time,
I need to know how to dislodge to solid 3D after being "Union" at, I
have tried seParate command but it didnt work, if I Explode them they
are mangled to pieces so all I need now is to know how to pull them
apart, please help

Thanks
Choong

 

You can't undo a UNION if you've closed the drawing. Depending on the
complexity of the piece, you'll have to create a negative shape and SUBTRACT
one of them, or start over from scratch altogether. If anyone else knows of
a secret formula to do otherwise, please share your knowledge.

Dr Fléau

 

Thank you Dr Fleau, even thought no solution is found nevertheless any
answer is a good samaritan's reply such as yours.

Thanks

Choong
Malaysia

 

That is why AutoCAD solids are often referred to as "dumb solids", there is
no history, except Undo before the file is closed.