# Different size in slicing software

**URL:** <https://discourse.shapr3d.com/t/different-size-in-slicing-software/24711>\
**Category:** Modeling Questions\
**Created:** [March 12, 2023, 8:08pm UTC](https://discourse.shapr3d.com/t/different-size-in-slicing-software/24711 "2023-03-12T20:08:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![LemonN1](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/lemonn1/32/19571_2.png) [@LemonN1](https://discourse.shapr3d.com/u/LemonN1)\
**Post date:** [March 12, 2023, 8:08pm UTC](https://discourse.shapr3d.com/t/different-size-in-slicing-software/24711/1 "2023-03-12T20:08:05Z")

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i use the free version and design in stl  
when I open the design in the slicer it says the object is too big and should it autoscale? If I don’t do this will I get a mega design outside the PCB? If I make a design that is 5cm high, 3cm deep and 5 wide, my slicer software says this while the print area is 20x20x20cm??

both in the slicer of XYZ and in Ideamaker

Is it because i don’t pay for the app?

Please help.

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [March 12, 2023, 9:44pm UTC](https://discourse.shapr3d.com/t/different-size-in-slicing-software/24711/2 "2023-03-12T21:44:04Z")

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Prior to exporting your STL file, did you set the units to millimeters?

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<div class="post-metadata">

**Author:** ![LemonN1](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/lemonn1/32/19571_2.png) [@LemonN1](https://discourse.shapr3d.com/u/LemonN1)\
**Post date:** [March 17, 2023, 7:31pm UTC](https://discourse.shapr3d.com/t/different-size-in-slicing-software/24711/3 "2023-03-17T19:31:47Z")

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Thanxx Thats the solution many thanks