# Interior supports

**URL:** <https://forum.formlabs.com/t/interior-supports/17678>\
**Category:** General Discussion\
**Created:** [February 28, 2018, 4:43pm UTC](https://forum.formlabs.com/t/interior-supports/17678 "2018-02-28T16:43:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![30362](https://avatars.discourse-cdn.com/v4/letter/3/dbc845/32.png) [@30362](https://forum.formlabs.com/u/30362)\
**Post date:** [February 28, 2018, 4:43pm UTC](https://forum.formlabs.com/t/interior-supports/17678/1 "2018-02-28T16:43:09Z")

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I was wondering how people deal with removing internal supports generated by PreForm?

I was looking at the supports PreForm proposes for a Voroni chess piece

> **[M10: Voronoi Chess Set with inlets for M10 Nuts @ Pinshape](https://pinshape.com/items/6358-3d-printed-m10-voronoi-chess-set-with-inlets-for-m10-nuts)**
>
> Download and 3D print this file (and many more) from Pinshape today!

there’s clearly supported need internally, but once it’s done printing, how do you successfully remove them?

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**Author:** ![George\_Earussi](https://avatars.discourse-cdn.com/v4/letter/g/aca169/32.png) [@George\_Earussi](https://forum.formlabs.com/u/George_Earussi)\
**Post date:** [February 28, 2018, 6:10pm UTC](https://forum.formlabs.com/t/interior-supports/17678/2 "2018-02-28T18:10:29Z")

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small burr with a flex shaft

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**Author:** ![Ike](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/ike/32/13680_2.png) [@Ike](https://forum.formlabs.com/u/Ike)\
**Post date:** [February 28, 2018, 6:28pm UTC](https://forum.formlabs.com/t/interior-supports/17678/3 "2018-02-28T18:28:45Z")

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Tweezers, flush angle cutters, needle-nose pliers, picks, probes, stainless steel chopsticks, shaking, and patience.

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**Author:** ![FredB](https://avatars.discourse-cdn.com/v4/letter/f/838e76/32.png) [@FredB](https://forum.formlabs.com/u/FredB)\
**Post date:** [February 28, 2018, 7:16pm UTC](https://forum.formlabs.com/t/interior-supports/17678/4 "2018-02-28T19:16:38Z")

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I always try turning off the internal supports (checkbox) and see if they are even needed. Often you can get away with either no internal supports or just a few internal supports,

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**Author:** ![JohnHue](https://avatars.discourse-cdn.com/v4/letter/j/48db29/32.png) [@JohnHue](https://forum.formlabs.com/u/JohnHue)\
**Post date:** [February 28, 2018, 10:24pm UTC](https://forum.formlabs.com/t/interior-supports/17678/5 "2018-02-28T22:24:43Z")

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This. being smart with orientation and a bit bold with the red (support needed) warnings can go a long way toward avoiding internal supports, especially on parts like these.

I have been experimenting with lattices recently and have encountered cases where PreForm would light up a model in red despite it being self-supported… it seems that the fine lattice (composed of short rods a bit less than 1mm in Ø) wasn’t considered as sufficient to support the rest of the geometry. Parts still printed fine and are very rigid even on the Z axis so the warning wasn’t really necessary.