samboradford

wow! thanks, that's really kind. Will do.

Good to see there are a few people around.  BlackCat I don't seem to have any spare tooling in that particular size. I've got spare mills, media, tubes, random bits i've collected etc. However, if you let me know what tubes you are using I can turn you a half-inch rammer and base. I don't need anything for it.

still looking for the video...

That's awesome.  Have you tried it in lampblack stars.  I'd be really interested to see it work. I have 4 or 5 samples of lampblack.  None of them seem to be the "real mcCoy"  and I'm yet to make a true lamplack star.

HI BlackCat, you'll find you can get coarse Titanium / FeTi to crackle in any BP based gerb. I have a video of one of my 1inch id titanium fountain somewhere I'll try to dig out.  I'm not sure what tooling I have in that size but I'll have a look.

Icarus, the camphor plasticizes the nitrocellulose, I also have dibutyl phthalate which I've tried amongst other things. Shooting powders are made by rolling the "toffee" then cutting it up into many fine flakes, of course, though that's automated.  Rolling / Extruding through a pasta machine might work, I lost patience and moved onto other things but I really should look at it again.

That's great!  I'm glad to hear you had some success blackcat.  I had some fun with single based powder and strontium nitrate producing a nice roaring flame projector in a 2 inch mortar icarus.  I fully intended to perfect it too but the cost was a setback. I tried making my own base powder with nitrocellulose, camphor and glycol but just made a mess. 

I have a lot of bits and pieces I'm happy to off-load for free if anyone is in need of anything.