# Can die be used with Tough Resin?

**URL:** <https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635>\
**Category:** General Discussion\
**Created:** [March 14, 2019, 6:43am UTC](https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635 "2019-03-14T06:43:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![EnergyFX](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/energyfx/32/13853_2.png) [@EnergyFX](https://forum.formlabs.com/u/EnergyFX)\
**Post date:** [March 14, 2019, 6:43am UTC](https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635/1 "2019-03-14T06:43:14Z")

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I’m expecting the answer is “no”, but curious if die can be used with the Tough Resin to make it… well… something other than translucent blue.

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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:** [March 14, 2019, 7:28am UTC](https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635/2 "2019-03-14T07:28:11Z")

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You can use dyes for Nylon to add some color to the prints, but yeah Tough is blue to begin with so there’s only so much you can do. I have used a black dye from Ryt Dyes (in the DyeMore range) on Though parts in the past, and it makes the parts a bit less translucent and much darker, albeit there’s still some blue/green going on.

Recently another user reported good results with another acrylate dye which is very concentrated and usable directly on the liquid resin :

> [@Anybody tried to add color to Rigid Resin?](http://forum.formlabs.com/t/anybody-tried-to-add-color-to-rigid-resin/22549/10):
>
> I tried the pigments being sold by Spot-A materials, I was told their latest ones are not yet on their website but they sell them ready to use in a pre-loaded Syringe - they charge €10 (one colour) each one is enough to to do 1L of resin at 0.5%. They work very well. Probably worth seeing what you think. [info@spotamaterials.com](mailto:info@spotamaterials.com). I got them to post me mine and bought six colours, so the cost of the shipping was sensible. Still have lots left after several litres of resin.

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**Author:** ![EnergyFX](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/energyfx/32/13853_2.png) [@EnergyFX](https://forum.formlabs.com/u/EnergyFX)\
**Post date:** [March 14, 2019, 7:33pm UTC](https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635/3 "2019-03-14T19:33:46Z")

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Awesome… thank you for the reply!

Curious, does the loss of translucency affect the completeness of curing? If UV can’t penetrate deeper into the material, does it limit curing to the outer surfaces?

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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:** [March 15, 2019, 7:18am UTC](https://forum.formlabs.com/t/can-die-be-used-with-tough-resin/22635/4 "2019-03-15T07:18:58Z")

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I don’t think it should have any noticeable influence ont the post-curing. Still, with Tough it’s relatively easy to tell even by hand as the stiffness of the resin changes quite dramatically from green to fully cured.