# Hollow cones for injection molded part

**URL:** <https://discourse.shapr3d.com/t/hollow-cones-for-injection-molded-part/5291>\
**Category:** Modeling Questions\
**Created:** [August 3, 2019, 8:12am UTC](https://discourse.shapr3d.com/t/hollow-cones-for-injection-molded-part/5291 "2019-08-03T08:12:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Linerz](https://avatars.discourse-cdn.com/v4/letter/l/f08c70/32.png) [@Linerz](https://discourse.shapr3d.com/u/Linerz)\
**Post date:** [August 3, 2019, 8:12am UTC](https://discourse.shapr3d.com/t/hollow-cones-for-injection-molded-part/5291/1 "2019-08-03T08:12:38Z")

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Hi there

New user here and I”m loving this compared to Sketchup!

How do I create a hollow cone?

I’m trying to create a number of hollow cones upon a rectangular base. I can make a cone with a thin thickness using concentric circles and revolve. But I’m looking to make these as thin as possible.

If you experts can suggest some answer and paste video / the gif thing, that would be really helpful.

Thank you!

L

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**Author:** ![Linerz](https://avatars.discourse-cdn.com/v4/letter/l/f08c70/32.png) [@Linerz](https://discourse.shapr3d.com/u/Linerz)\
**Post date:** [August 3, 2019, 8:18am UTC](https://discourse.shapr3d.com/t/hollow-cones-for-injection-molded-part/5291/2 "2019-08-03T08:18:18Z")

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Looks like I can use shell and set a very thin thickness. If you have other suggestions please share! Thanks

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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:** [August 4, 2019, 3:53pm UTC](https://discourse.shapr3d.com/t/hollow-cones-for-injection-molded-part/5291/3 "2019-08-04T15:53:59Z")

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Greetings,

Do this- create your rectangular base. Create a cone that will ultimately be hollow. Translate (move) the cone into the base and use the Subtract tool.

Regards, Mike

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d91f1abcefed0d83a4e257a0ac4973221cea4614.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/d91f1abcefed0d83a4e257a0ac4973221cea4614.MOV)