I'm back - well, actually, I never went away but you could be forgiven for thinking I had. My last entry on this blog was almost 2 years ago and basically it was telling you that the YouTube channel was becoming a vlog - a weekly summary of what I'd been up to and things that had caught my eye in the previous week. I did that for about a year but never produced anything on the blog to go along with it - the videos alone were taking far too long to edit and there was no time or inclination left for me to produce write-ups too. So I stopped the vlog in May 2022 - it wasn't really a conscious decision, it just kind of happened. But lately I've been thinking about rebooting it, mainly because I've spent the last month or two learning Blender and I wanted to create a lasting record of the things I've learnt. If you don't know what Blender is, it's a brilliant piece of Open Source software for creating 3D models and animations. It does CGI, basically. It isn...