# Loft and shell failure should show why

**URL:** https://discourse.shapr3d.com/t/loft-and-shell-failure-should-show-why/19334
**Category:** Modeling Questions
**Created:** [May 13, 2022, 4:01pm UTC](https://discourse.shapr3d.com/t/loft-and-shell-failure-should-show-why/19334 "2022-05-13T16:01:22Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![benaston](https://avatars.discourse-cdn.com/v4/letter/b/bcef8e/32.png) [@benaston](https://discourse.shapr3d.com/u/benaston)
#### Post date: [May 13, 2022, 4:01pm UTC](https://discourse.shapr3d.com/t/loft-and-shell-failure-should-show-why/19334/1 "2022-05-13T16:01:22Z")

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Loft and shell operations routinely fail due to the precise dimensions/positions of the relevant bodies.

Currently, the user must pursue a trial-and-error approach (eg. via progressively slicing bits off a body) to discover which parts of a body are preventing the operation.

When a loft or shell operation fails, the regions of the relevant bodies preventing the operation should be marked (eg coloured red), to indicate how to resolve the issue.