rotate a mounting hole keeping one hole fixed and relationship unchanged.

rotate a mounting hole keeping one hole fixed and relationship unchanged.

stuart_chale
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Message 1 of 7

rotate a mounting hole keeping one hole fixed and relationship unchanged.

stuart_chale
Participant
Participant

Still a novice and mostly using Fusion for 3D prints.  Currently working on a mount for a microswitch.  2 holes for the switch.  The second hole is displaced from the first by 22.2 mm lengthwise and 13.3mm width wise.

I have constrained the first hole to edges of the plate 30mm from each end and added constraints from the first hole to the second hole by the above measurement.

What I am trying to do is simply rotate the 2nd hole while keeping the first hole at 30mm from the 2 edges while keeping the 2 displacement measurements the same.  Doing this to fine tune the position for activation of the microswitch.  I tried editing the first hole and rotating it but that didn't change the second hole.  If I move the second hole I lose the displacement measurements.

Screenshot of project and Fusion file attached.

Thank you,

Stuart

 

Screenshot 2026-01-05 222947.jpg

 

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171 Views
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Message 2 of 7

laughingcreek
Mentor
Mentor

in certain circumstances, dimensions constrain themselves to measure just vert/horizontal, effectively locking the point dimensioned in place.  dimension some construction lines instead. 

laughingcreek_0-1767676586071.png

 

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Message 3 of 7

TheCADWhisperer
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Consultant
Accepted solution

@stuart_chale 

Here is another way to visualize the position. Drag the circle along the arc.

Dimension angle as needed.

TheCADWhisperer_0-1767680402093.png

 

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Message 4 of 7

stuart_chale
Participant
Participant

Appreciatew the reply I need to learn more about the use of construction lines

 

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Message 5 of 7

stuart_chale
Participant
Participant

Appreciate the reply I need to learn more about the use of construction lines.

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Message 6 of 7

stuart_chale
Participant
Participant

Appreciate the response I could have used the large circle and just moved the second hole by eye, but the use of the constraint makes it work properly.

Thank you

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Message 7 of 7

stuart_chale
Participant
Participant

I actually came up with one more solution while lying in bed 🙂

Simply add a third constraint of measurement from one hole to the other and then get rid of the original horizontal and vertical constraints.  Then the second hole can also rotate in a circle around the first.

 

As always I appreciate the replies.

Stuart

 

Screenshot 2026-01-06 063148.jpg

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