Let's make the following twisted ring by TATARA 7.0. 
There is no background image for making this.
Let's make a twisted ring from the following steps.
1) Choose 32x32 of TORUS by New on the File menu.
2) Choose Pillar on the Shape menu and make the section of the ring.
3) Make the form of the ring on ROKURO mode.
4) Choose Twist on the Edit menu and twist the ring.
5) Choose Maximize on the Edit menu. And check the form after upload.
6) Choose Save on the File menu and save the sculpt map file.
You can check this tutorial by following video.
Let's make the form of the ring and make the section square.
Choose New on the File menu. 
On the Setup dialog, choose 32x32 of TORUS and click the OK button. 
Click ROKURO tab and change edit mode into ROKURO. 
Let's make the section of the ring square.
The resolution of sculpted prim is low. So if you arrange the control points on the side of the square, the face constituted by the sides are not smoothly. Therefore, check Crystallized on the Shape menu before choosing Pillar on the Shape menu, as shown in the following figure. 
The texture of the Crystallized section cannot use texture. So, it is better not to check Crystallized, if you apply your texture to this ring.
Choose Pillar on the Shape menu. 
Let's make the section small and make it the form of the ring.
As shown in the following figure, choose all the control points of the section in red area. 
As shown in the following figure, press the Ctrl key, and drag an upper left control point, and make a section small. 
As shown in the following figure, move the selected control points to the edge of the area horizontally. 
The preview is displayed as follows. 
Let's twist and maximize this ring.
As shown in the following figure, Choose Twist – Twist+ on the Edit menu. 
The preview is displayed as follows. 
Although I twisted only once, you can twist it once again. 
As shown in the following figure, choose Maximize on the Edit menu. 
The preview is displayed as follows. 
As shown in the following figure, edit the value of spinbox bar of Z of a preview pane. Then, you can check the form where the scale was adjusted. 
Let's check Setup before saving.
Choose Setup on the File menu. 
Set TGA Save Size as 64x64 in the displayed dialog.
And let's check the following item.
-Copy Protection by transparent - When a Prim is modified, you can make it transparent to prevent the texture from being copied by screen capture. 
If you check Auto Rename, overwrite of a sculpt-map file is prevented.
Let's save your sculpt map file in TGA File form.
Choose Save on the File menu. 
Choose TGA File of SaveDialog and save your file. 
Let's upload a sculpt-map file to the in-world.
When you upload a sculpt-map file, be sure to choose Upload Image.
It costs 10L$ to upload one Sculpt-Map file.
Choose Upload - Image (L$10) on the Build menu. 
Specify “Preview image as” as Sculpted Prim. And check it by the preview. Check Use lossless compression. And click Upload Button . 
Since the sculpted prim is displayed as the Sphere, the yellow area of the preview is displayed.
And apply the sculpt map uploaded to it.
Click the Object tab and set Building Block Type to Sculpted. 
Apply your uploaded sculpt map. 
Set Stitching type as Torus. 
Please stretch your object suitably. 
The twisted ring was completed. 
Original text: http://kanaenet.blogspot.com/2013/07/t708-1.html
This article is automatically translated by the computer interpreter.
Please notify me of any mistakes in translation.
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