Random Thread #1

[crazyboy25]

i guess this is one more reason to get sodium sali... for the benzoate portion im assuming that uses whistle mix with Vaseline and solvent and iron oxide right?

[kingvitamin]

Any members from Iceland, or Sweden? Since I plan on vacationing these places next American summer. I was wondering if we talk about some places to visit and the like. A PM would be okay by me.

thanks.

[frogy]

i guess this is one more reason to get sodium sali... for the benzoate portion im assuming that uses whistle mix with Vaseline and solvent and iron oxide right?

Catalyzing whistle is always good and the Vaseline makes it easily to press, but really neither are needed, but it helps...

 

Here's a good tutorial of mixing it...

http://jackerypyro.com/whistles.html

 

I just got more perchlorate, benzoate, and red iron oxide in the mail today... All I need is my Vaseline

 

Edit: 100 post... oh baby

[crazyboy25]

yeah i know id did this 3 days ago powder burnt fine i have yet to test it in a device but if i make long winded screamers i have to do it all over again with sodium sali...

[BPinthemorning]

I was on supreem pyro, and I saw the rocket tooling is in mms. What size tubes should I buy for each of the different toolings?

[frogy]

I was on supreem pyro, and I saw the rocket tooling is in mms. What size tubes should I buy for each of the different toolings?

Well for the 6 mm you want 6 mm tubes...

For the 10 mm you want 10 mm tubes...

For the 15 mm you want 15 mm tubes...

For the 20 mm you want 20 mm tubes...

For the 25 mm you want 25 mm tubes...

 

 

It's not that hard to calculate... don't be so lazy

 

6 mm = .236 =~ 1/4" (bottle rocket)

10 mm = .394 =~ 2 oz.

15 mm = .591 =~ 8 oz.

20 mm = .787 =~ 1 lb.

25 mm = .984 =~ 3 lb.

[Pretty green flame]

If you guys used the Metric system of measurments insted of the completely illogical imperial system you wouldn't be in this mess

[pudidotdk]

I agree, I have never seen anything logical in for example

5-3/64"

 

[tentacles]

The metric system has it's own inconsistencies, too, and a lot of the measurements in imperial are appropriate for certain applications. Besides, the metric system was created for lazy people. Imperial also helps you think outside the base 10 number system with it's variety of units.

 

I wouldn't say I drank 500ml of beer - I'd say PINT. Although, if we didn't have pints and quarts, maybe beer would come in liter size glasses? That sounds just about right to me.

[_Po_]

Thought I'd drop in and say hello. How are all of you going? Nothing major (good or bad) happened?

[Pretty green flame]

The metric system has it's own inconsistencies, too, and a lot of the measurements in imperial are appropriate for certain applications. Besides, the metric system was created for lazy people. Imperial also helps you think outside the base 10 number system with it's variety of units.

 

I wouldn't say I drank 500ml of beer - I'd say PINT. Although, if we didn't have pints and quarts, maybe beer would come in liter size glasses? That sounds just about right to me.

How does it help you to think outside the box? I see no way.

 

If i wanted to drink 500ml of beer i'd say "Large beer".

 

Another thing, I can't get it how you guys even know the existence of small numbers. How exactly do you for example write down 0.12mm in inches?

[qwezxc12]

A machinist would say, "47 tenths" (.0047" or 47 ten-thousanths). I agree, it sucks. I hate having to use two sets of tools at work...the equipment cabinets are US mfg, but the radars are Danish and English, so they have English and metric fasteners.

[hst45]

Yeah, I'd be happy with just one set of tools, too, but some thing metric I just can't get used to. I was in Canada a couple of years ago in August, and the radio announcer said something to the effect of "It's going to be a hot one today, we'll have a high near 35." I just can't get my head wrapped around metric ambient temp., to me it's still 95.

[tentacles]

The metric system has it's own inconsistencies, too, and a lot of the measurements in imperial are appropriate for certain applications. Besides, the metric system was created for lazy people. Imperial also helps you think outside the base 10 number system with it's variety of units.

 

I wouldn't say I drank 500ml of beer - I'd say PINT. Although, if we didn't have pints and quarts, maybe beer would come in liter size glasses? That sounds just about right to me.

How does it help you to think outside the box? I see no way.

 

If i wanted to drink 500ml of beer i'd say "Large beer".

 

Another thing, I can't get it how you guys even know the existence of small numbers. How exactly do you for example write down 0.12mm in inches?

LARGE?! Remind me never to visit your country if a pint is a large beer! Or do you mean that the 500ml would only be a portion of that contained in this mythical and possibly legendary "large beer"?

 

How does it help? You aren't stuck thinking base 10 numbering is the only way. It helps you learn to do math and conversions in your head, instead of merely displacing zeroes. And our unit of weight(/mass) doesn't change as often as yours! The kilo lost another 50 mcg this year - although, technically, the gram got smaller, not the kilo reference. That means the pound is up! lol

[Pretty green flame]

LARGE?! Remind me never to visit your country if a pint is a large beer!

Well if that's the only reason you don't want to visit my beautifull country then by my guest, but you don't know what you're missing

 

What the hell are you talking about the kilo losing weight

1 kilo = 1000g = 1.000.000 etc... As far as i know 1 liter of H2O still weighs the same as thousands of years ago or am did I miss something?

[qwezxc12]

(snip)...The kilo lost another 50 mcg this year - although, technically, the gram got smaller, not the kilo reference. That means the pound is up! lol

Is this why my shells feel lighter, now?

 

The periodic "readjustment" of measurement constants is interesting...I can hear it now, "Attention. The Millimeter is now 8% longer due to red-shift in the local galactic arm. Expect updates due to proton decay in 10 x 10^32 years. That will be all. Thank you."

[tentacles]

Well if that's the only reason you don't want to visit my beautifull country then by my guest, but you don't know what you're missing

 

What the hell are you talking about the kilo losing weight

1 kilo = 1000g = 1.000.000 etc... As far as i know 1 liter of H2O still weighs the same as thousands of years ago or am did I miss something?

Actually, I had edited my post, but apparently in the wrong place, heh.

 

LARGE?! Remind me never to visit your country if a pint is a large beer! Or do you mean that the 500ml would only be a portion of that contained in this mythical and possibly legendary "large beer"?

 

The kilo isn't based on anything particular - it's an arbitrary slab of platinum, and it regularly loses a bit of mass due to expiring half lives or something.

"AP reports that the 118 year old “reference” kilo, which like many an inbred French aristo is kept locked up in a Chateau southwest of Paris, is 50 micrograms adrift of the average of other standard kilo weights. Many of these were made of the same materials and even at the same time as the French original.

 

Richard Davies, of the International Bureau of Weights and Measures admitted to the AP “We don’t really have a good hypothesis for it.”

 

He added, “We could obviously use a better definition.”"

(http://www.theregister.co.uk/2007/09/13/kilo_loses_weight/)

[crazyboy25]

i realize there are alot of threads about dragon eggs but i was wondering if the safe alternatives (bismush based) are less powerful than the toxic lead ones?

[tentacles]

By all reports... yes.. no.. maybe. Some people report great success, others say they fizzle, some say it's all about the NC, or coating with wax. I've heard equal success and failures with trioxide, subnitrate and subcarbonate compounds. To me, the lead dioxide makes sense, it's half the price of the nearest bismuth compound, there is some assurance of success, with the caveat that greater care may be needed. Considering how dangerous dragon eggs are to begin with, one should already be taking extreme precautions. A respirator, gloves, goggles etc should already be part of your equipment for these.

 

I'm not sure why everyone sees red lead as the epitome of toxic fireworks chemical, yet ball mill dust from lead media is perfectly acceptable or a dozen other toxic candidates. Just don't go spooning the crap on your cereal or snorting lines of it and you should be no worse off than a day spent biting fishing weights or sanding car paint.

 

Keep in mind there is nothing SAFE about making dragon eggs! They are a dangerous and sensitive composition and should be treated as such. I know this isn't what you meant but I'd rather not have anyone thinking bismuth is the magic for non-sensitive, safe dragon eggs.

[asilentbob]

I picked up some bismuth trioxide at the PGI convention.. havn't had a chance to try any eggs with it though. Psycho_1322 got some bismuth subcarbonate and has made a few very very small batches with it with essentially only rarely crackling eggs resulting... i sugjested adding some other metal oxide because it might catalyst some part of the reaction... he tryed with red and black iron oxide and both produced eggs that actually crackled... i havn't seen the video yet, and i don't know if they crackle strongly enough to be considered good dragon's eggs though.

 

So just a bit of advice. It might be in your best interest to try 2+ very very small batches of eggs, one standard and one with some small amoutn of some catalyst.

[crazyboy25]

im going to wired nextfest tomorrow

 

for those of you who dont know some videos from last yearhttp://video.google.com/videosearch?q=wired+nextfest&hl=en

 

and this year looks even better http://video.google.com/videosearch?q=wired+nextfest&hl=en

 

they usually have a couple hours on it on the science channel or the discovery channel so you guys can drool and wish you were there.

[ULTRABUF]

It was my birthday yesterday, I'm 18 now. It wasnt a very fun day, but whatever. Im going to a local restaurant today called the Brown Bear and I' gonna try and eat 2 bear burgers. Ive eaten one a couple times before, but if you can eat 2 you get your meal for free. Each burger is like 8 inches across, its about a pound of meat.

Edit- turns out you dont get your meal for free if you eat two of them. Stupid rumors. Needless to say I didnt have enough motivation to try going for two.

[deadman]

Happy birthday.

 

Just wondering does anyone use any of the other board skins? I have switched through them, but like the default the best.

[mormanman]

Happy Birthday.

Does any one know where to get sulfuric acid?

[Mumbles]

I use Bohega, it's mostly blue. I find it's easier on the eyes, but looks pretty badass.

 

You can get sulfuric acid from the hardware store as drain cleaner. Rooto is my brand of choice, but there are others. Read the labels. Generally the goods are wrapped in clear plastic bags.