Constraining a construction line

[Fueler]

I maybe looking at this wrong.

I have a rectangular bar with a hole .700 from the center of the length.

This bar length will change from one design to the next.

The hole must remain .700 from the center.

I would like the construction line or hole to move to the new center with the change in bar length so I don't have to do the criss cross line thing to find center of the new length.

I have been experimenting with constraints but haven't stumbled on to the proper method.

file attached

[SaeedHamza]

Hi,

2-things to take care of :

1- Define the length of the sketch lines ( red )

2- Define the relation between lines ( yellow )

Check the screenshot for better understanding

Regards

[Fueler]

Must be something subtle you did. I have all the dimensions already. The center and hole do not move if the length is changed.

[etfrench · Accepted solution]

You also need to use the Midpoint constraint:

[SaeedHamza]

Go back to the screenshot I posted above and you'll see the length set to 0.27

When changing the length, lets say you set the new length for my screenshot to be 0.21 by changing the value from the sketch, that will result in subtracting .03 from both sides and not .06 from just one side ... which means the circle and the construction will remain always in the middle

[Fueler]

Sorry Saeed,

I could not get that to work.

Midpoint constraint was what I was missing.

[SaeedHamza]

Doesn't matter, what matters is that you found a solution

Best of luck