HJC 2.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. HJC2010.exe is the frequent file name to indicate the HJC installer. The most popular version of the software 2.0.
This program is an intellectual property of Glen Stone. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software lies within Education Tools, more precisely Science Tools.
From the developer:
HJC gives you precise control of your curve radius and rotation rate about the bar.
Most approach calculators make you choose what stride you will start your curve on. This gives you only two or three choices of curve radius which, in turn, gives you only two or three choices of rotation rate about the bar. That's not good enough.
You may want to check out more software, such as Holiday Jigsaw Christmas, Holiday Jigsaw Christmas 2 or Holiday Jigsaw Christmas 3, which might be related to HJC.