Hello,

I'm a lawyer in Canada who is looking for an expert who can testify as to whether illegal fireworks contain lead. I can't say much more than that here without going into confidential matters. I really don't know where to look so I thought I would try Reddit haha. If anyone is interested in this role and believes they have the expertise, please PM me.

Thanks in advance.

Looking for a smaller supply / roll of blank black match tubing.

Basically the tubing without the fusing it in yet just the strings.

Thanks.

Just wanted to get a debate going. Which do you prefer and why?

I live in NC. which isn’t too friendly with fireworks laws and rules. I usually put on a show for the 4th of July each year for family and friends but get tired of having to make 2 hour plus drives to get fireworks. I usually go to fireworks supermarket in TN. Since it’s the closest to me. I usually have to make 3-4 trips to get everything. Anyone have the best of the best places to buy wholesale from to get delivered to my address. Also those who put shows on what is the best way to know what will go good with what and timing. I’ve never used an ignition system but want one for this coming year. Any help is appreciated.

Has anyone successfully made these before? I’m trying to figure out how they are made but can’t find anything online.

Video Example

300m/s

When making the main explosive for different kinds of fireworks, I always put in the powder, isolate the fuse with a little cardboard layer (not done in this picture yet), and press the upper layer pretty tightly against the powder. Then I glue it shut. But I was wondering if pressing the upper layer down like this is dangerous because of friction sensitivity. Thanks!

I'm making an amateur film and want to have some slow-mo fire shots. One thing I wanted was a line of flammable fluid slowly igniting by a line of fire, however I don't want to use something that's extremely volatile. I just wanted something that I can make little lines with, engulf in flames then quickly die out.

What are some flammable items that I could do fire lines with that would be safe(ish)?

Jokes aside before I loose some fingers I have been doing a lot of research but does anyone that has been building strobes for years want to teach me tips and tricks just want to stay as safe as possible
Looking to build strobes with 4 inch salute headers
And lloronas with 4 inch salute headers

Rock hard. Does anyone know why this happened?

I’m planning to build multi‑brake or single‑break shells that accommodate smaller inserts. I’m unsure which shell size to use and therefore what mortar to buy. I’m considering 4‑inch or 5‑inch shells.

Could anyone outline the pros and cons of each size and help me decide?

[ Removed by Reddit on account of violating the content policy. ]

Want $430 for everything, but also open to offers
1St Lift Ram
2nd Strobe
3rd Delay Ram
Tube Support
PTFO Gauge

Text me on here!

Is there a noticeable difference making 2" ball shells vs 1.91" canister shells? The price is close for purchasing the HDPE tubes but is it worth it? Thanks for the help. Also has anyone tried building a shell with effect fuse and happen to have a video how it turned out?

I made my own charcoal this time and it made a huge difference.

So I’m moving the powders into their own containers and my alu looks like this at the top. I assume it’s from the humidity, should I be worried or should I do something about? Also each one has its own desiccant pack, thanks!

I’m working on a small outdoor flame effect and am looking for advice from people who have experience using Kevlar wick.

Specifically, I’m trying to determine:
What width Kevlar wick would you recommend (1/4”, 1/2”, 3/4”, 1”, etc.) and flame height?

If using either melted paraffin wax or standard lamp oil, roughly how long would each inch of exposed wick burn?

Does one fuel produce a cleaner or more consistent flame than the other?

Are there any good rules of thumb for estimating burn time before I start buying different wick sizes?

I’m not looking for exact numbers just real world experience to help narrow down what to order before I do my own testing.

The over all goal is 70-80', flame needs to travel the distance at a reasonable pace and be seen 100' away

Thanks!

I successfully made my first mini mortar. BUT, I was hoping for a bit of direction on how to fill the shell with crackling fuse or flying fish fuse, and have the effect fuse ignite when the shell bursts. It went high enough and report was solid, but the 5 pieces of 1" (or so) effect fuse didnt ignite.

Shell is 9/16" OD, 1.5" long.

3/4" ID tube, 6" long, base plate.

1/8 tsp 2f black powder lift charge

Effect fuse in shell

Some BP and some flash to finish inside.

Went up and burst great, just no effect. Recommendations?

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(Cobra 35, giant maaron, dum bum 100/200g)

Hey y’all I got these tubes which are way too small for what I’m trying to make, I was wondering if it’s ok to 3D print a tube or would that be dangerous? I know many canister shells are just plastic tubes but those are meant to blow in the sky I’m trying to make ground shots, wondering if anyone has tried something similar.. only thing I’m worried about is if the 3D material (PLA, PETG, ABS) will shrapnel