scale Dynamic blocks

i am trying to produce a pump symbol for a piping diagram.

2 polyline arc and a base in 2D. i have added a linear parameter and a scale action however when i scale my block the polyline width changes

can i stop this happening ??

DS

Does making the polyline have zero width affect it ?

No it doesnt,

i need the line to have a constant width of 0.75 and not have a line weight.

the polyline is also in a block so i cant edit jus the polyline

If a block contains a polyline that has a width assigned to it, then when the block is scaled, the width of the polyline will be scaled with it. How you get around this problem, would be to make the polyline be zero width, and put the polyline onto a layer where the lineweight of the layer is assigned the desired 'width' of the polyline.

Here is the file. the small pump is the block and the bigger one is the scaled block

as you see the line has got bigger.

is there any way to change that ??

thanks

PUMP BLOCK.dwg

thanks a lot

that helped but........

when i zoom in and out the lineweight changes with the zoom level. as in the line is thin when you zoom in and thick when you zoom out.

is there any way around this. if not no worries.

an thanks again for your help

So, 4 years after the last post, I am searching for the same solution... Have you find something to not change the width of the polyline in a dinamyc block?

See attached.

PUMP BLOCK.dwg

Clever, very clever. Good solution. Thanks Mike!

No problem. We have similar occurences with some of our blocks here