# Projection Bug

**URL:** <https://discourse.shapr3d.com/t/projection-bug/11300>\
**Category:** Modeling Questions\
**Created:** [February 6, 2021, 12:43pm UTC](https://discourse.shapr3d.com/t/projection-bug/11300 "2021-02-06T12:43:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![deets](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/deets/32/594_2.png) [@deets](https://discourse.shapr3d.com/u/deets)\
**Post date:** [February 6, 2021, 12:43pm UTC](https://discourse.shapr3d.com/t/projection-bug/11300/1 "2021-02-06T12:43:43Z")

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Heya,

I encountered for the second time now problems with projection. You can see the issue in the attached image. I project a body onto a construction plane. IMHO this should work. I also wonder why projection from body to body creates kind of “engravings”. Bug or feature?

Find the workspace attached.

Otherwise as always: still deep in love with the product & it’s evolution!

[projection-bug.shapr](https://discourse.shapr3d.com/uploads/short-url/lGyVxXOsz9sxCkc7CryCyLM8DNf.shapr) (987.4 KB)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d9b9d79ed8d3c7c95a1b35b3fbab38441fafa5a8.jpeg)

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**Author:** ![deets](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/deets/32/594_2.png) [@deets](https://discourse.shapr3d.com/u/deets)\
**Post date:** [February 6, 2021, 12:49pm UTC](https://discourse.shapr3d.com/t/projection-bug/11300/2 "2021-02-06T12:49:53Z")

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Okay, the feature is called imprinted body edges. Sorry for not learning that myself before asking.

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [February 8, 2021, 10:22am UTC](https://discourse.shapr3d.com/t/projection-bug/11300/3 "2021-02-08T10:22:33Z")

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Hi @deets, thanks, it is something we should investigate. The edge where the blob connects to the cylinder makes the projection fail, please see the workaround below until the issue is solved:

The cause of why the projected sketches become edges after a projection is 3d curves are not supported yet. If you wish to project an edge/sketch onto a planar face of a body, it can be selected if the result should be a sketch or edge. If the target of the projection is a plane, the result can only be a sketch. If the projection target is a curved surface, the result cannot be a planar sketch, the only option left is to make it an edge. This edge can be moved with the Move/Rotate tool like any other edge on a body and the enclosed area can be extruded too.