# Very low impact durability

**URL:** <https://forum.formlabs.com/t/very-low-impact-durability/17652>\
**Category:** Support & Troubleshooting\
**Created:** [February 27, 2018, 2:27pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652 "2018-02-27T14:27:45Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Draverik](https://avatars.discourse-cdn.com/v4/letter/d/48db29/32.png) [@Draverik](https://forum.formlabs.com/u/Draverik)\
**Post date:** [February 27, 2018, 2:27pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652/1 "2018-02-27T14:27:45Z")

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Hello,

So I bought Form2 and make some firsts prints. I use Form Cure after I wash the prints.

I printed a pen (standard black resin), after I drop it with around 1 meter, it crashed like glass. Is it normal? Do you have some solution to make it stronger? (I can’t change design of the part)

 ![test](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/2X/6/66031e0260509dc1ce44c780854a351190185c93.JPG)

btw. I see that are available resins:

- Tough
- Durable

What colors they have? Is it possible to order those in black?

Best,  
Damian

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**Author:** ![Frew](https://avatars.discourse-cdn.com/v4/letter/f/c0e974/32.png) [@Frew](https://forum.formlabs.com/u/Frew)\
**Post date:** [February 27, 2018, 7:01pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652/2 "2018-02-27T19:01:49Z")

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The Standard Resins can be fairly brittle and skipping the post-cure step can help to improve their impact resistance. You should [check out the Engineering Materials page.](https://formlabs.com/materials/engineering/) Towards the bottom, there’s a graphic that compares multiple mechanical properties including impact strength.

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<div class="post-metadata">

**Author:** ![Draverik](https://avatars.discourse-cdn.com/v4/letter/d/48db29/32.png) [@Draverik](https://forum.formlabs.com/u/Draverik)\
**Post date:** [February 27, 2018, 9:01pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652/3 "2018-02-27T21:01:21Z")

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Do you have some information what colors are available are in durable resine?

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**Author:** ![Frew](https://avatars.discourse-cdn.com/v4/letter/f/c0e974/32.png) [@Frew](https://forum.formlabs.com/u/Frew)\
**Post date:** [February 28, 2018, 4:17pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652/4 "2018-02-28T16:17:09Z")

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Each of our Engineering Materials only come in the one pictured color. Durable Resin has a sort of frosted clear finish.

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**Author:** ![system](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/5/b/5bc2bdf993ff27c2e0eecab5010b25626fbb327a.png) [@system](https://forum.formlabs.com/u/system)\
**Post date:** [March 14, 2018, 4:17pm UTC](https://forum.formlabs.com/t/very-low-impact-durability/17652/5 "2018-03-14T16:17:21Z")

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