UK Pyrotechnics Society Forums: martyn - Viewing Profile - UK Pyrotechnics Society Forums

One of my favourite effects is the horse tail shell.
I'm interested in how they are constructed, I've had a search online and not come up with any answers.
I'm guessing it's a very weak break and timed to burst just before apogee.
The commercial ones I have seen are ball shells, are there any construction details that anyone knows of that ensures that the stars seem to spit out from one end.
Could someone perhaps put a sketch up on pyrobin or something. I can imagine how it might be easier to get the 'linear break' effect from a canister shell just by popping a lid off and ejecting the stars, although I know this is not the technique used.
Would a ball shell softly broken appear to eject the stars in this linear fashion if it still had upwards momentum.

As a follow on from the 'just had my chemicals confiscated thread'.

Does anyone know of preferably free software for labelling chemicals to the requisite standard, most of my chemicals (which I believe are held legally) are stored in the beautifully labelled containers in which they are legally purchased, but there are a few which are decanted out of larger containers into smaller ones for use.

I obviously stores oxidisers and fuels and other incompatables seperately, and have msds for the chemicals, but a few hand written labels might look a bit sloppy if there were to be a knock at the door.

Perhaps some well organised folks might have some templates or pre designed labels they would be willing to share with the rest of us.

Come to think of it does anyone know exactly what info is required on the label in order to satisfy the 'authorities' that chemicals are correctly labelled.

Looking at the hse website it seems that chip applies to the supply of chemicals, not necessarily for the end users own identification purposes.

The bespoke software that the best suppliers use is presumably very expensive and ott for occasional users.

Got an automated email from the HSE explosives group, might be of interest?

"HSE Web Communities
Explosives Group
A message from the Community Manager:

Dear Member

From 30 June, health and safety regulation became the focus of the Government's Red Tape Challenge, launched by the Prime Minister in April to give people the chance to have their say on regulations that affect their everyday lives. The Challenge is therefore an opportunity for people to directly influence the future of health and safety regulation, to simplify health and safety and to support business growth in Great Britain.

The Government will act on the comments they receive, so it is important that there is a well-informed debate.

You can find out more at www.hse.gov.uk/news/red-tape-challenge, or alternatively, join the debate now at www.redtapechallenge.cabinetoffice.gov.uk and give us your views on which regulations should stay, which should go and which should change."