# Surface.ByLoft Warning **URL:** \ **Category:** Uncategorized\ **Created:** [November 28, 2023, 8:33am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889 "2023-11-28T08:33:57Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 28, 2023, 8:33am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/1 "2023-11-28T08:33:57Z")
hello everyone hopes to all of you best time. I want to ask about the reason of this message coming to me when I use Surface.ByLoft node the message is " unable to loft! BAD\_UV\_SKIN\_DIR-- Surface U and V derivatives are in the same or opposite direction, actually I am applying with the video but in the video its good and work? ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [November 28, 2023, 8:37am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/2 "2023-11-28T08:37:04Z")
Hi @gkhalifah could you show where its go wrong, and a link to the video you mention ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 28, 2023, 8:58am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/3 "2023-11-28T08:58:10Z")
![123](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/e/d/ed96a929e50ee144eb0c1f501fbb5988a86a2f97.png) ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 28, 2023, 8:59am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/4 "2023-11-28T08:59:06Z")
this is from the video ![4](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/e/bea07f6c25e48e906546dd9890dfbea8636a354c.jpeg) ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [November 28, 2023, 9:08am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/5 "2023-11-28T09:08:10Z")
thanks…could you share the dyn as well then we can probably help… ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 28, 2023, 9:42am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/6 "2023-11-28T09:42:57Z")
it’s prohibited for new users to upload attachments. ---
**Author:** ![gilberto.arechigaiba](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/gilberto.arechigaiba/32/204980_2.png) [@gilberto.arechigaiba](https://forum.dynamobim.com/u/gilberto.arechigaiba)\ **Post date:** [November 29, 2023, 10:24am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/7 "2023-11-29T10:24:40Z")
Hola Amigos buenas. Amigo @gkhalifah this errors shows up when the loft si dificult or imposible to create since the base geometry, it happens to me a couple of times!! 😅 the order of the points that generates the curves is important may be you should reorder the points to evoid overlaping the curve it self we will need the file to check what the real problem is! ![Surface by Loft Fails](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/0/700fef2dc3d640972e4a642c2326aee131bb9d33.png) ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [November 29, 2023, 10:42am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/8 "2023-11-29T10:42:41Z")
Hi @gkhalifah you can upload via webtransfer, filetransfer etc. and share the link here ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 29, 2023, 10:52am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/9 "2023-11-29T10:52:13Z")
[Road.dyn](https://forum.dynamobim.com/uploads/short-url/1pmGnuTRHUlw5M41yZIoI6QlNLe.dyn) (52.1 KB) this is the file sir ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 29, 2023, 10:54am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/10 "2023-11-29T10:54:00Z")
actually, I tried several times yesterday it was prohibited for me to upload any file here, but today its done. I uploaded it you will find it above. ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [November 29, 2023, 10:56am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/11 "2023-11-29T10:56:29Z")
thats great 😉 ---
**Author:** ![gilberto.arechigaiba](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/gilberto.arechigaiba/32/204980_2.png) [@gilberto.arechigaiba](https://forum.dynamobim.com/u/gilberto.arechigaiba)\ **Post date:** [November 29, 2023, 11:05am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/12 "2023-11-29T11:05:17Z")
I think the geometry came from .rvt file can you shared also please?? ---
**Author:** ![gkhalifah](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@gkhalifah](https://forum.dynamobim.com/u/gkhalifah)\ **Post date:** [November 29, 2023, 11:18am UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/13 "2023-11-29T11:18:32Z")
[Project1.0001.rvt](https://forum.dynamobim.com/uploads/short-url/si5ydsY2zBcQuuLLfA1U90wbLGP.rvt) (5.4 MB) ---
**Author:** ![gilberto.arechigaiba](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/gilberto.arechigaiba/32/204980_2.png) [@gilberto.arechigaiba](https://forum.dynamobim.com/u/gilberto.arechigaiba)\ **Post date:** [November 29, 2023, 12:53pm UTC](https://forum.dynamobim.com/t/surface-byloft-warning/95889/14 "2023-11-29T12:53:35Z")
Srry, i have not installed the version 2024, i can’t open the file!! 😬