Generate Surfaces from curves by Lofting and Skinning

Curviloft is a script dedicated to Loft and Skinning, that is, generation of surfaces from contours.

  • Loft by Spline joins separate contours, open or closed, by smooth splines
  • Loft along Path joins contours, along a given rail curve.
  • Skinning create surfaces bounded by 4 or 3 contiguous contours



You can get more information and documentation on the Home Page for Curviloft on Sketchucation.



IMPORTANT: Requires you also install LibFredo6.



Curviloft, like my other plugins, is hosted on Sketchucation. Sketchucation is a Community site entirely dedicated to Sketchup. It includes an ExtensionStore of 800+ plugins, as well as a quite rich Discussion Forum about Sketchup and a Gallery. Registering on Sketchucation is FREE.


IF YOU ARE NOT FAMILIAR WITH LIBFREDO6 INSTALLATION OR WITH SKETCHUCATION, it is advised to watch the video "LibFredo6 Installation".


While designing large and complex shaped adding curvature might be a tricky job. The extension brings and easy way to get the job done without spending much time. The extension will be a great help for those designers who want to ease their work and get the desired output. rijksmuseum tour

The SketchUp Extensions website indicates that the Fredo Curviloft is compatible with SketchUp 2018. Yet, via the Sketchucation website, Fredo indicates Curviloft is only compatible with versions up to SketchUp 2017, but not SketchUp 2018 as noted on the SketchUp Extensions website. SketchUp users would appreciate a clairification regarding the aforementioned inconsistency. Thanks.


great extension

Michał P's picture

I still have problems understanding some functions of Curviloft. What does the option "generate the junctions as SU curves" do? I mean the sub-option of Skinning, that blue horizontal-vertical lines icon on the right. I cannot see any difference between this and standard options but it sounds like it should create Bezier curves in between.
I coulnd't find any detailed tutorial over Skinning.

George H's picture

hola quiero descargar este pligin

how to install curviloft in 2016 version there is no extension manager in the sketchup 2016

You need to use the Extension Warehouse, found in the Window menu.

i have install lifredo then curviloft but it seems that the curviloft does not appear.. how i am going to do?

I think that the tine has come for Trimble to create a professionally thought through integrated set of tools to replace the Fredo skinning and lofting tools. The guy that wrote the Fredo tools is clearly a clever bloke and probably gets paid little or nothing for his efforts. I have been struggling with these tools for many years and they are woefully inadequate and unreliable. I love sketchup and do not want to change but other softwares have moved on and are massively more powerful and easier to use in this area..TRIMBLE WHATIS THE PLAN?! PLEASE SORT THIS OUT...
Cheers Steven

i tried to register an account at sketchucation but they wanted 75.00 for 12 mos. that was janky. do i have to go through sketchucation to get each of your plugins? i have other plugins and i dont remember dealing with that page before.

fredo6's picture


Registration on Sketchucation is completely FREE. Just choose the option at the top of the page "Want to register a Free Account"


hey *bleep*, If you put all this effort in making, and publishing it, for free, then why make sketchup users spend 20minutes makin an acount for this Straight-from-the-software-accessible-site, just to discover the *bleep* registration requirements on your precious unaffiliated "Sketchucation"? Explain it to me Lucy. PW requires this , pw requires that, go bleep ureself you bleeping bleep bleep. Its hard enough too find time too self-educate without this bleeping bleep.

necesito dercargar curviloft