To change one mounting hole without resizing an entire CAD part, edit the hole's cylindrical wall and check the neighboring features separately. In this Nora3D example, one hole in a flanged connector goes from 8 mm to 10 mm, then to 9 mm. The other three mounting holes remain 8 mm.
The second adjustment is the point: the first edit gives you a result to reconsider. You keep working on the same connector instead of generating a replacement.
Original opening
Radial offset: 1 mm
Radial offset: 0.5 mm
Other three mounting holes: 8 mm throughout.
One hole needs a change. The whole connector does not.
The starting part is the Flanged Connector with Holes template. Its body, reinforcing ribs and four mounting holes already exist. The design task is narrow: enlarge the selected front mounting hole while retaining its axis position and the diameters of the three neighboring holes.
Scaling the entire connector would change more than this opening. A local face edit gives the selected hole its own adjustment, leaving the rest of the mounting pattern out of that decision.
This is the same principle behind continuing to edit a text-to-CAD model: each new request should build on the useful work already in the document.
From 8 mm to 10 mm: add a local control
The original opening measures 8 mm across. Nora3D adds a face-offset feature to its cylindrical wall, with a radial offset of 1 mm. That increases the diameter by 2 mm, producing a 10 mm hole.
The new feature, OffsetFace1, holds an editable distance parameter. This gives the local change a control of its own; it does not recover the template's original construction history.
The distinction matters when working with an existing part. You can add a useful adjustment to the geometry you have, then return to that adjustment as the design develops.
From 10 mm to 9 mm: refine the same edit
The follow-up makes the enlargement smaller. Changing the added radial offset from 1 mm to 0.5 mm produces a 9 mm opening in the same model.
For this cylindrical hole, the calculation is straightforward: the original 8 mm diameter plus twice the 0.5 mm radial offset equals 9 mm. The parameter describes distance from the original wall, rather than the final diameter itself.
| Model state | Selected hole | Other three holes | Added radial offset |
|---|---|---|---|
| Starting template | 8 mm | 8 mm each | — |
| First edit | 10 mm | 8 mm each | 1 mm |
| Refined edit | 9 mm | 8 mm each | 0.5 mm |
Check what stayed the same
Measurements after the final edit show the selected hole at 9 mm and the other three at 8 mm each. The selected hole's axis retains its X and Y coordinates, 35 mm and −17.5 mm. The final edit also returns matching saved and displayed revisions.
A larger number alone would not tell the whole story. The useful result is a local change you can identify, measure and refine again. Here, moving from 10 mm back to 9 mm is another decision about one hole, not a restart of the part.