# STEP file
**URL:** https://discourse.shapr3d.com/t/step-file/26789
**Category:** Modeling Questions
**Created:** [July 16, 2023, 5:48pm UTC](https://discourse.shapr3d.com/t/step-file/26789 "2023-07-16T17:48:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@coreyk](https://discourse.shapr3d.com/u/coreyk)
#### Post date: [July 16, 2023, 5:48pm UTC](https://discourse.shapr3d.com/t/step-file/26789/1 "2023-07-16T17:48:13Z")
I have been using STEP format to import into my 3d printer slicer for months and a few days ago I tried to import the bottom and top of a case I designed. But only the bottom STEP format could be imported, the top portion I was told didn’t contain any geometry. Both were saved as a STEP file. I had to save it as a 3MF format and then import it. Why now is this any different?
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### Author:  [@Peter\_Gy](https://discourse.shapr3d.com/u/Peter_Gy)
#### Post date: [July 17, 2023, 8:47am UTC](https://discourse.shapr3d.com/t/step-file/26789/2 "2023-07-17T08:47:09Z")
Could you share the files (both .shapr and STEP exports) with our [Support team?](https://support.shapr3d.com/hc/en-us/requests/new) We’d like to check what’s going on.
Also, what slicer are you using? Did you perhaps upgrade that as well?
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### Author:  [@coreyk](https://discourse.shapr3d.com/u/coreyk)
#### Post date: [July 18, 2023, 6:49am UTC](https://discourse.shapr3d.com/t/step-file/26789/3 "2023-07-18T06:49:11Z")
I am sending 2 different files, the bat wing file had trouble with the offset walls and extrusion. The raspberry pi case had issues with extrusion, face offset, and moving a plane in or out, and won’t import into my slicer. I know the Pi case is a mess, I pushed the side with the holes in it, 1.5mm in then tried to pull it back which didn’t work. I then deleted that section but as I was trying to build it back the old pushed-in portion kept coming back. At that point, I was super frustrated, and just opened a new design window and redrew the whole thing I am hopeful this helps figure out what is causing the problem, I am using Bambu studio as my slicer, I can import one of the 2 Raspberry Pi case files “the base, but not the lid”
[Rasberry Pi 4b case lid.shapr](https://discourse.shapr3d.com/uploads/short-url/gtJom43LQ3FA0jUhripKIpPSryy.shapr) (128 KB)
[Rasberry Pi 4b case base.shapr](https://discourse.shapr3d.com/uploads/short-url/8ZHy2WHo8CwSFBFXYSMrBZQ2fhn.shapr) (128 KB)