# File conversion struggle
**URL:** https://discourse.shapr3d.com/t/file-conversion-struggle/27292
**Category:** Modeling Questions
**Created:** [August 11, 2023, 4:59pm UTC](https://discourse.shapr3d.com/t/file-conversion-struggle/27292 "2023-08-11T16:59:35Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@dmf92](https://discourse.shapr3d.com/u/dmf92)
#### Post date: [August 11, 2023, 4:59pm UTC](https://discourse.shapr3d.com/t/file-conversion-struggle/27292/1 "2023-08-11T16:59:35Z")
Hello. I’ve been trying to ask ChatGPT to help me import a file into Shapr3D but to no avail.
I can’t see how to attach the file here.
Basically I have it in .mb , .zpr , and as .obj
I’d like to import as non-mesh (STEP, I guess) to manipulate more easily. Namely, I’d like to make it hollow.
Given the formats I have available are proprietary or mesh, is there anything I can do?
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### Author:  [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [August 11, 2023, 5:01pm UTC](https://discourse.shapr3d.com/t/file-conversion-struggle/27292/2 "2023-08-11T17:01:27Z")
STEP is fully supported. Considering that we are releasing new versions every 2 weeks and ChatGPT’s knowledge base was cut off years ago, I don’t think that it will give you relevant answers regarding Shapr3D 😃
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### Author:  [@dmf92](https://discourse.shapr3d.com/u/dmf92)
#### Post date: [August 11, 2023, 5:02pm UTC](https://discourse.shapr3d.com/t/file-conversion-struggle/27292/3 "2023-08-11T17:02:14Z")
Hi. Thanks. But I don’t have a STEP file. That’s the point!
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### Author:  [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [August 11, 2023, 5:04pm UTC](https://discourse.shapr3d.com/t/file-conversion-struggle/27292/4 "2023-08-11T17:04:24Z")
Mesh to b-rep conversion is not straightforward and I’m afraid that reverse engineering from the mesh model is the easiest way to get a usable model.
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