10 mm ID tube, rolled from a single piece of A4 paper, pasted with PVA glue.
Zinc/Granite Stars:
80 Zinc (dust)
28 Potassium Nitrate
14 Charcoal (airfloat)
5 Sulfur
2 Dextrin
Each star was 8 mm OD, 8 mm long, pumped.
Corned meal lift, about 20-40 mesh, a batch I made before I had calibrated screens. 1/4 teaspoon per lift charge. Extra 1/8 teaspoon lift to completely encase star and pass fire.
Same delay as the 3 shot microcandle, half-hour meal + 5% iron oxide + 5% 50-80 mesh Aluminium flitters. One full teaspoon per delay charge.
A stake was provided for stabilizing on ground. Meal-NC twisted tissue fuse.
Pretty, lifts totally sucked.
Well, the delay and star compositions worked well, nice effects, again the video doesn't really capture the colours.
Once again, the lifts let it down. The tube was also too thin and burnt down with the delay, the 2nd or 3rd last lift destroying the case, but I half expected this and it is easy to fix in the next try. I think the lift needs to be finer and I suspect delay migration into the lift filling up the voids. I am not 100% sure how to stop this, maybe a very thin layer of wadding?
Maybe I need to increase the containment of the lifts, larger stars, or perferated disks between the delay and lift+star. I'll do some single-shot experiments to debug the lift charge. The same BP works fine in the bottom fused stargun.
Note that they delay timing is about right, perhaps slightly longer, the stars burn out just as the next one is lifted. This may change once the stars are actually lifted properly and burn differently.
| title | type | size |
|---|---|---|
| Burn Video | video/x-msvideo | 7.388 Mbytes |
| Pre-Test Picture | image/jpeg | 34.736 kbytes |
| Post-Mortem Picture | image/jpeg | 60.338 kbytes |