# Set tolerance in clash detection

**URL:** <https://community.qonic.com/t/set-tolerance-in-clash-detection/323>\
**Category:** Feature Requests\
**Created:** [September 8, 2026, 12:39pm UTC](https://community.qonic.com/t/set-tolerance-in-clash-detection/323 "2026-09-08T12:39:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Johan\_De\_Cock](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.qonic.com/johan_de_cock/32/235_2.png) [@Johan\_De\_Cock](https://community.qonic.com/u/Johan_De_Cock)\
**Post date:** [September 8, 2026, 12:39pm UTC](https://community.qonic.com/t/set-tolerance-in-clash-detection/323/1 "2026-09-08T12:39:20Z")

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Hi,

When using clash detection I think it is very useful to have a “tolerance” parameter. So that we can decide if we give it 1-5mm of modelling tolerance. For example, could be that a concrete element is tesselated geometry because of some complicated structure, making a round hole not perfectly round.

Or a small (rounding error) offset between the void provision element and the actual opening, …

Currently we can set soft clashes - which I would think is more difficult to program. So I think the request for tolerance should be technically possible. Then it becomes only a matter of UI to fit it in 🙂