like i said it's not an actual phoenix so it's not coming back this video was brought to you by altium designer if you mix sugar in saltpeter you get a mixture that burns pretty quickly and believe it or not this is actually used as rocket fuel apart from being a high energy food sugar is not that special what makes it burn quickly is the saltpeter which is a combustion enhancer an oxidizer in the past i tried mixing sugar with resin to NUMBER_TOKENd print fuel for my hybrid rocket engines but then i realized i was looking at it all wrong because resin itself is already a fuel what would be cool to try is mixing an oxidizer in the resin and then try to NUMBER_TOKENd print it to test this hypothesis i mix NUMBER_TOKEN saltpeter with NUMBER_TOKEN NUMBER_TOKENd printing resin to cure the mixture i use the uv cure that i have but you can use a cheap nail cure once the mixture was hard i took it outside and tried burning it it burns better than regular resin but it's pretty slow and it leaves a lot of residue i tried increasing the amount of oxidizer but the result wasn't much better also i need to NUMBER_TOKENd print this if the mixture is too thick it won't work for a while i gave up the idea but the other day i was lurking around the nasa website as i normally do and i found out saltpeter is not even a very good oxidizer there's better ones and apparently the best one is ammonium perchlorate it's what nasa uses in their solid rocket boosters so i got some ammonium perchlorate and i repeated the experiment this time i did three mixtures one with NUMBER_TOKEN oxidizer one with sixty percent and one with seventy percent and i burned them from the three the one that burned the best was the seventy percent mixture but that one was too thick to print so i went with the sixty percent one the burn rate was still pretty slow though so to help with that i added a little bit of iron oxide to the mixture which is rust i added rust to the mixture and that my friends didn't really help before i tried to improve the propellant i decided to print something and what i printed was that phoenix you saw in the beginning of the video which is pretty cool and still not coming back at this point in time i thought it would be a good idea to NUMBER_TOKENd print some actual rockets using this technique and i say it's a good idea because i have tried to cast some rocket grains in the past and trust me it's a messy process another reason why it would be a great idea to NUMBER_TOKENd print rocket fuel is the grain you see rocket fuel can have a lot of different internal shapes that increase surface area and performance these shapes are normally a pain in the butthole to get but with a NUMBER_TOKENd printer should be easy enough i designed some different rocket grains with different internal shapes and i NUMBER_TOKENd printed them they didn't come out perfect but they were definitely usable and burnable hey do you know what's the difference between a bomb and a rocket a nozzle i don't really want a bomb so i guess i need a nozzle i had my fair share of rockets blowing
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