I have been using Golden Software products for 22 years and find them to be excellent products that are consistent, reliable, and logical. Liam Fernand CEFAS I very much like working with Golden Software. I find the software very easy to use and very helpful.David Orr, Shrimp Biologist, Fisheries and Oceans Canada Copyright © 2016 Golden Software, LLC. All rights reserved. The names and logos for Surfer, Grapher, Voxler, MapViewer, Didger, Strater and Golden Software are registered trademarks of Golden Software, LLC. Surfer does not support 3D extrusions in DXF files. If you have a DXF file with 3D extrusions, you will recieve this warning upon import. In addition, if you do not skip the paperspace entities upon import, the file may load with incorrect limits. The best method is to remove the 3D extrusion objects in AutoCAD or convert them to regular objects and resave the DXF file to use in Surfer. If you are unable to remove the extrusions in AutoCAD, you may be able to work around the problem in Surfer by following these steps: I have been using Golden Software products for 22 years and find them to be excellent products that are consistent, reliable, and logical. Today is an exciting day with the release of our newest product, Raster Tools! Raster Tools is a powerful add-in to Esri’s ArcGIS for Desktop (ArcMap) software which creates accurate raster datasets. With Raster Tools, users have access to twelve adv… Source.