Hello,  Recently I had to trim a line drawn on top of a solid block. As the first object on  trim command the solid border could not be used as an edge or fence. So I exploded the solid and trimmed the line.  But I could not get back the solid after the line was trimmed. Is there a way to get the solid back?. I could have placed the UCS on the side of the solid, drawn a  line  to touch the line to be trimmed and used it as a fence and  erase the fence line after trimming. Any thoughts ?Thanks.

The only way to get back the solid is if you kept the underlying geometry that was used to create it in the first place since you did not bother to first make a copy of it.  

Hey John,Thanks for giving me your solution. I want to confirm if this is what you are saying- Copy the solid prior to drawing the line ( to be trimmed) using Edit/ copy paste with basepoint. Erase the exploded solid (exluding the trimmed line leaving it in place) paste the copied solid, into the drawing and snap it into place below the trimmed line. if this is not  how you would aproach it I will be pleased if you would give some details. Thanks  

I'm saying it's an option that's all.  I'd probably use some temporary geometry to do the trimming.  The question still remains why don't you retain the underlying 2D geometry used to create the 3D object in the first place?

you have answered my original query- ie no straightforward solution. Thanks