I tried to upload a video but the forum won't let me, so I'll have to faff about with it before I can upload.
In the meantime, here's a photo or two. First a Saxon made with Lancaster's mix from his book and secondly a tree of gerbs which was ok, but the wheel failed to spin.
Saxon Firework.jpg 179.66KB 112 downloads
The tree of gerbs.
Tree of gerbs.jpg 338.73KB 107 downloads