# Import of Polymesh solids from Rhino in Parasolid or STEP files

**URL:** <https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963>\
**Category:** Modeling Questions\
**Created:** [February 3, 2019, 12:59am UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963 "2019-02-03T00:59:35Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Nick.lyons22](https://avatars.discourse-cdn.com/v4/letter/n/df705f/32.png) [@Nick.lyons22](https://discourse.shapr3d.com/u/Nick.lyons22)\
**Post date:** [February 3, 2019, 12:59am UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/1 "2019-02-03T00:59:35Z")

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Hi,

Im trying to import a solid into Shapr3d in STEP or Parasolid formats. I can import the solid successfully however i cannot subtract from the solid or do any boolean operations in shapr3d.

The workflow is as follows:  
Export from Delftship (Hull Modelling Software) in IGES  
Import into Rhino, Join all surfaces to create a CLOSED Parasolid. No naked edges.  
Export from Rhino in either STEP or Parasolid x\_t  
Airdrop to my IPad Pro 2018 and import into Shapr3d.

The solid shape appears, it allows replace face however any boolean operations fail e.g subtract. I can successfully complete a union with the solid however nothing subtracting for some reason.

I did the exact same process (from Delftship to Shapr3d) with a simpler shape such as an open cube and it worked fine.

Many thanks for your assistance.

Kind regards,

Nick Lyons  
+61412530144

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**Author:** ![Nick.lyons22](https://avatars.discourse-cdn.com/v4/letter/n/df705f/32.png) [@Nick.lyons22](https://discourse.shapr3d.com/u/Nick.lyons22)\
**Post date:** [February 3, 2019, 1:01am UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/2 "2019-02-03T01:01:12Z")

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As i am a new user i cannot upload the files.

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**Author:** ![hamedtopic](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/hamedtopic/32/3371_2.png) [@hamedtopic](https://discourse.shapr3d.com/u/hamedtopic)\
**Post date:** [February 3, 2019, 4:58am UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/3 "2019-02-03T04:58:30Z")

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I reported the same problem to the guys: here is the link:

> [@Union failing](https://discourse.shapr3d.com/t/union-failing/3897/3):
>
> Having the same problem as follows:

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**Author:** ![DanielR](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/danielr/32/582_2.png) [@DanielR](https://discourse.shapr3d.com/u/DanielR)\
**Post date:** [February 3, 2019, 12:52pm UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/4 "2019-02-03T12:52:27Z")

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Hi Nick,

would you be able to send the files to [support@shapr3d.com](mailto:support@shapr3d.com), we will take a look at it.

Thanks for your patience

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**Author:** ![Nick.lyons22](https://avatars.discourse-cdn.com/v4/letter/n/df705f/32.png) [@Nick.lyons22](https://discourse.shapr3d.com/u/Nick.lyons22)\
**Post date:** [February 6, 2019, 10:23pm UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/5 "2019-02-06T22:23:55Z")

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I’ve done a bit more investigation on this. When extruding a new solid, the program won’t subtract from the imported object. If I create a solid in shapr3d separately, then move the solid over the imported object and use the tools→subtract the subtraction will complete.

It appears there is an issue with the automatic Boolean subtraction when extruding solids into imported objects.

Another issue I found is that it doesn’t appear the imported object functions as a solid correctly. I cannot fillet or chamfer any edges.

Hope this helps.

Nick Lyons

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**Author:** ![Nick.lyons22](https://avatars.discourse-cdn.com/v4/letter/n/df705f/32.png) [@Nick.lyons22](https://discourse.shapr3d.com/u/Nick.lyons22)\
**Post date:** [February 15, 2019, 10:34pm UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/6 "2019-02-15T22:34:34Z")

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Hi Daniel, any movement with this??? Its been 2 weeks now? Many thanks for your assistance.

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**Author:** ![DanielR](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/danielr/32/582_2.png) [@DanielR](https://discourse.shapr3d.com/u/DanielR)\
**Post date:** [February 15, 2019, 10:56pm UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/7 "2019-02-15T22:56:45Z")

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Hi Nick - sorry about the wait. I’m aware we haven’t replied - please allow us a few more days.

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**Author:** ![Nick.lyons22](https://avatars.discourse-cdn.com/v4/letter/n/df705f/32.png) [@Nick.lyons22](https://discourse.shapr3d.com/u/Nick.lyons22)\
**Post date:** [February 15, 2019, 11:22pm UTC](https://discourse.shapr3d.com/t/import-of-polymesh-solids-from-rhino-in-parasolid-or-step-files/3963/8 "2019-02-15T23:22:55Z")

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Ok no worries, thanks for you help.