The DWG drawing format used by AutoCAD is a standard in the 2D CAD world. But at the same time, AutoCAD is not the best 3D CAD software available since the 3D functions of AutoCAD are difficult to learn and easy to forget if not used regularly. For this reason up to 75% of AutoCAD users do their designs in 2D and ignore the 3D functions. AutoCAD LT was originally designed for learning and training the 2D functions of AutoCAD but it has no programming language such as AutoLISP which can be used to cutomize AutoCAD.
CALC4CAD is an easy to use application that creates script files that are sent to AutoCAD to create 2D fasteners, gears, sprockets, springs, steel shapes, hole charts and isometrics. CALC4CAD does not rely on AutoLISP to communicate with AutoCAD and it works just as well with AutoCAD LT.
The cost of AutoCAD LT is about $1200 while AutoCAD goes for about $4000. From a cost point of view, if you are only using the 2D functions of AutoCAD, why not use AutoCAD LT and save $2800? With the money that you save from buying AutoCAD LT, you can buy CALC4CAD and have a powerful set of standard parts and other utilities. You can be among the 4,000,000 AutoCAD and AutoCAD LT users that can benefit from the powerful 2D features of CALC4CAD.
Alibre is a powerful 3D CAD system that also has a low price of about $100 for the Standard version. SolidWorks is also a powerful 3D CAD system but the cost for a single seat is about $5000. The Professional version of Alibre costs about $500 which includes part libraries that the Standard version does not have. To bridge the gap between the Standard and Professional versions of Alibre, we have designed CALC4CAD for Alibre to add part libraries to the Standard version.