# Elastic Resin Prints 10% larger. in XY Direction on Form 2

**URL:** <https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503>\
**Category:** Form 2\
**Created:** [May 27, 2019, 9:59am UTC](https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503 "2019-05-27T09:59:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Angel\_Roman](https://avatars.discourse-cdn.com/v4/letter/a/6de8d8/32.png) [@Angel\_Roman](https://forum.formlabs.com/u/Angel_Roman)\
**Post date:** [May 27, 2019, 9:59am UTC](https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503/1 "2019-05-27T09:59:15Z")

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Hi All,

I printed a thin 1.5mm Thick 52mm square object on my Form2 using the Elastic Material. I am wondering if the software does a ~10% increase in XY Dimensions to allow for shrinkage. My part printed about 10 mm larger than what I was expecting in the XY direction. Maybe after a proper curing it will shrink by 10%. Is this the expected behavior for the Elastic Material?

Maybe I scaled the part unintentionally in preform. Will try another print soon.

-Angel

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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:** [May 27, 2019, 2:26pm UTC](https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503/2 "2019-05-27T14:26:02Z")

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Elastic isn’t intended for as high dimensional accuracy as other Formlabs resins, but a 10% difference seems farther off than I’d expect.

Did you print it right on the build platform, or on supports, and did you measure it before or after washing and post-curing?

Also, note that thin parts (1.5mm thick probably counts) may be more subject to swelling when they’re soaked in IPA, so you might want to wash a part like that for a shorter amount of time.

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**Author:** ![Angel\_Roman](https://avatars.discourse-cdn.com/v4/letter/a/6de8d8/32.png) [@Angel\_Roman](https://forum.formlabs.com/u/Angel_Roman)\
**Post date:** [May 29, 2019, 9:34pm UTC](https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503/3 "2019-05-29T21:34:27Z")

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It was printed on the build platform. Initial measurement was after washing and post curing. The print was measured again after two days and now the expansion went down to 4% instead of 10%. I assume the percentage expansion is also affected by the dimensions of my part. Perhaps if my part was twice the size in XY, the percentages would be half of what I am measuring now. I printed myself a mold using clear v4 and went back to resin injection casting, which, although not perfect, gives me better accuracy. Thanks for your response.

Best,  
Angel

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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:** [June 5, 2019, 9:34pm UTC](https://forum.formlabs.com/t/elastic-resin-prints-10-larger-in-xy-direction-on-form-2/23503/4 "2019-06-05T21:34:38Z")

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Closed on June 5, 2019, 9:34pm UTC

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