This tutorial shows how to easily make a sword in Curvy, but you will also learn how to make one model take on the shape of another using Image Apply which happens to be an excellent technique for getting tricky shapes into Secold Life as Sculpted Prims.
Here is a video of the process using a different sword shape -
Video of Sculpting a Sword Sculptie for Second Life in Curvy 3D
Here is the sequence of images I will be stepping through in the tute:
There are two methods of converting images into meshes in Curvy - Auto and Relief.
Images (1) and (2) show the auto method. A white sword is created from the outline between black and white on the image. N.B. I turned off 'Smooth' to create an inflated mesh with sharp lines. This method is quick and easy.
Images (3) and (4) show the relief method. I used spline shapes and a tween to create a smooth gradient inside the sword - but any greyscale image or effect will work. N.B. the purple background is to help you see the shape - in the actual image I used the background is pure black - and any pure black parts of the image are empty holes in the inflate mesh.
The relief method has created a scooped out curve on the blade which I think suits the fantasy look well - although it is slightly harder to make the base image (1 min if you know how to do it!).
Smooth press S
Once inflated the surface might be a bit rough - using a higher res input image will help - I used a 2048 height image. To get rid of any remainign roughness select the mesh and press S. The sword is smoothed in (5)
Scale holding Z to scale along axis.
The scale is likely to be wrong after inflate - now you could change the scale parameter in the inflate dialog, but it is easier to scale by hand afterwards. Hold down the Z key while using the scale tool to resize the mesh. In this example I left the sword more box shaped than flat to help with the next step -I knew I could always scale the sword flat later in SL.
Draw lathe inside sword
Now we get to the first step of the Apply process. The aim here is to make a regular Lathe object (which is perfect for sculptie export) match the shape of our inflated blade (which has the wrong UVs to be a sculptie). This is achieved by growing the surface of a Lathe to fit the sword's surface. To start with the lathe must sit entirely inside the sword.
Draw a Lathe inside the sword - image (5) shows the kind of lathe you need - but yours should be completely hidden by the sword's surface. It helps to set the lathe's diffuse colour to bright red to spot any overlap.
Add a white 512 res image to Curvy map
or flood fill 512 res default grey image with white and increase Curvy map displacement until it covers the sword. Image (6) shows the surface of the lathe being pushed out by the white curvy map, and covering the sword underneath. Once it covers - flood the map with grey again ready for the next step.
Apply children - add
In the groups panel drag the sword onto the lathe to add it as a child. Then use "Image/Apply Children: Add". Select the original sword and press H to hide it. You should now have a replica as in image (7).
Check you have Sculptie Mode turned on, and export sculpties from the File Menu. Here is my sword blade uploaded to SL with a metalic sheen.