# Preform support algorithm bugged? **URL:** \ **Category:** Form 2\ **Created:** [November 13, 2017, 4:28pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858 "2017-11-13T16:28:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![InnoCADStudio](https://avatars.discourse-cdn.com/v4/letter/i/e47774/32.png) [@InnoCADStudio](https://forum.formlabs.com/u/InnoCADStudio)\ **Post date:** [November 13, 2017, 4:28pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/1 "2017-11-13T16:28:05Z")
Hello everybody! Probably since the Preform version 2.12 we have seen many problems in our printed parts using 2 different Form2. Basically is about the generated supports (see attached images ) and some weird layers. We have printed about a hundred of parts without this problem (we use 4 liter of material more or less per week). All STL parts are repaired previously in Magics. Has anyone similar problems? Best regards, Enrique ![BadSupports](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/2X/6/678491c2551c79015a00c0394483c18572c96c71.png) ![BadSupports3](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/2X/2/2e771a76a966db24f1dc4e8479b3a13a1ade8e36.png) ![BadSupports2](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/2X/1/1cd84addf9c07ccd05aae7dead9a07ab543d105d.png) ![BadSupports4](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/2X/b/b588fd49ac41dba8f3235bd81d0bdcc121b0b727.jpg) ---
**Author:** ![InnoCADStudio](https://avatars.discourse-cdn.com/v4/letter/i/e47774/32.png) [@InnoCADStudio](https://forum.formlabs.com/u/InnoCADStudio)\ **Post date:** [November 13, 2017, 4:37pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/2 "2017-11-13T16:37:39Z")
Confirmed!, same ,form file and after installing PreForm version 2.12.3 (downloaded from other post for older versions) [http://forum.formlabs.com/t/preform-older-versions/9686](http://forum.formlabs.com/t/preform-older-versions/9686) and removing and adding the same point in order to recalculate the supports algorithm, it does not happen. Please, doublecheck this possible bug. Best regards, Enrique ---
**Author:** ![BenFrantzDale](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/benfrantzdale/32/6064_2.png) [@BenFrantzDale](https://forum.formlabs.com/u/BenFrantzDale)\ **Post date:** [November 13, 2017, 5:03pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/3 "2017-11-13T17:03:04Z")
BadSupports2.png is what happens when there is a problem with mesh topology. The others are interesting but may be resulting from the mesh issue. ---
**Author:** ![InnoCADStudio](https://avatars.discourse-cdn.com/v4/letter/i/e47774/32.png) [@InnoCADStudio](https://forum.formlabs.com/u/InnoCADStudio)\ **Post date:** [November 13, 2017, 6:03pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/4 "2017-11-13T18:03:34Z")
Hi!, both problems solved downgrading Preform version. No additional changes in STL file. ---
**Author:** ![BenFrantzDale](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/benfrantzdale/32/6064_2.png) [@BenFrantzDale](https://forum.formlabs.com/u/BenFrantzDale)\ **Post date:** [November 13, 2017, 6:25pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/5 "2017-11-13T18:25:14Z")
Interesting. Thanks. We’ll investigate. ---
**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:** [November 27, 2017, 6:25pm UTC](https://forum.formlabs.com/t/preform-support-algorithm-bugged/15858/6 "2017-11-27T18:25:17Z")
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