Thickness constraints in Dynamic block

[Anonymous]

Hello all,

I am trying to make a Dynamic block for Circular Hollow Sections. So i have a block properties table with 3 columns.

SIze (description)   |   Outer Diameter  |   Thickness

i can add a diameter constraint to the OD no problem but how can i add a thickness constraint? i cant pick say a linear or horiz between the quadrants of each circle it does not let you.

Now clearly i could convert all my tabular data to Inner Diameter instead of Thickness but i was looking to see if there is a way i can do it like described?

Also - i think i could also do this with an equation in Parameters Manager but for some reason that does not open, every time i click it the dialog does not display nor does it show anything at command line, i know this means its maybe corrupt but i can afford the time to reinstal just now.

Any and ALL help is much appreicated.

[Charles_Shade]

Can you post your block so far?

[Anonymous]

I'm assuming that 'T' is a 'String Paramater' you've created?

If so, add a Radius to you're inner circle that '=D-T', then hide the 'radius paramater' so it doesn't appear in properties.

[Anonymous]

Sorry, Mathematical error, the inside should be a radius, therefore the expression should be 'D/2-T'. That will allow your Thickness and Outside Diameter to display correctly.