Simon Trümpler: Sketch #22 - Barrel Explosion





Here are my first 4 (very rough) Niagara sketches. My findings so far:

  • Takes longer than expected to do even just a sketch
  • It’s a bit frightening seeing the other threads where the sketches look like finished art works :smiley: I spent too much - but not crazy time - on my sketches and yeah, they are rough but that’s what a sketch is supposed to be I guess :smiley: It’s a very interesting challenge to put out that many very unfinished art pieces.
  • Grayscale is awesome but for some reason I always add color and then must remind myself “dude, it must be grayscale!” :smiley:






Hey there @simonschreibt! Glad to see you’re participating too!

Loved the internal explosion. Are those ribbons that you’re using to create the smoke?

By the way, I think it would be great to see those sketches without that harsh shadow in the background. Setting the walls not to cast shadows should do the trick.


Waiting for your final entries! :new_moon_with_face:


I love the internal explosion, I feel like you could exaggerate it, make it quite cartoony. Pretty fun stuff :slight_smile:


@Lush Thanks for the feedback! Yes, that’s ribbons :slight_smile: I removed the shadow now.
@Bruno Thank you :slight_smile: I like it too but I planned to exercise rendering flip books for this challenge so I “must” go with a different one.

In general I will not make it. Neither finishing the final nor finishing the missing 3 sketches. Anyway, here is a new update. I’m following the video from @AndreasGlad which is an amazing tutorial :slight_smile:


Don’t worry about not finishing the sketch!

It’s all about learning and improving your skills. Quality over quantity.


I’m continuing working on my barrel explosion. As the challenge is over I think it’s ok to add some color now :smiley:

A rough pass without any nice details like smoke trails and pre-explosion. I’ll work on that.



Love the texture and shape for the explosion texture! Houdini render i assume? how did you set up the source for the Pyro if you don’t mind me asking?

Anyway, already looking super-nice!


Thanks :slight_smile:

I’m following the tutorial from @Partikel in case you need more details but the basis is a relatively simple smoke sim out of the houdini shelve with some tweaks from Andreas (e.g. to add some noise to break up the shape), mask it so that it does not cut the texture space and make it loop-able. Really cool stuff! And yesm it’s Houdini <3



I really need to dig in to Partikel’s stuff more, everything i’ve seen so far has been a goldmine of knowledge.


Loved it, Only feedback on the internal explosion one to expand and contract the barrel.


I’m not sure if I understand…you mean, that the Barrel could contract a bit for 1 frame before it explodes?


Sorry Simon my bad, What i meant was like in Cartoons where you see the Barrels wood Expand outwards for a few frames then returns back to normal after the internal explosions, I searched for some reference but couldn’t find any. Hope that makes more sense.