Subject: Using the right-hand rule

To visualize how CADdirect works with three-dimensional space, use a technique known as the right-hand rule. Hold up your right hand in a loose fist with your palm facing you. Extend your thumb in the direction of the positive x-axis and your index finger upward in the direction of the positive y-axis. Then extend your middle finger straight toward you in the direction of the z-axis. These three fingers are now pointing in the positive x, y, and z directions, respectively.       

You can also use the right-hand rule to determine the positive rotation direction. Point your thumb in the positive direction of the axis about which you want to rotate, and then curl the rest of your fingers toward your palm. These fingers are curling in the positive rotation direction.     


The right-hand rule helps you determine the positive direction of the x-, y-, and z-axes and the positive rotation direction.

© Copyright 2022. BackToCAD Technologies LLC. All rights reserved. Kazmierczak® is a registered trademark of Kazmierczak Software GmbH. Print2CAD, CADdirect,, CAD Direct,, CAD Bot, are Trademarks of BackToCAD Technologies LLC. DWG is the name of Autodesk’s proprietary file format and technology used in AutoCAD® software and related products. Autodesk, the Autodesk logo, AutoCAD, DWG are registered trademarks or trademarks of Autodesk, Inc. All other brand names, product names, or trademarks belong to their respective holders. This website is independent of Autodesk, Inc., and is not authorized by, endorsed by, sponsored by, affiliated with, or otherwise approved by Autodesk, Inc. The material and software have been placed on this Internet site under the authority of the copyright owner for the sole purpose of viewing of the materials by users of this site. Users, press or journalists are not authorized to reproduce any of the materials in any form or by any means, electronic or mechanical, including data storage and retrieval systems, recording, printing or photocopying.