Hi Brian, I have been looking around the net a bit... and maybe some of this might help with your problem... "Jet Engine Heat Haze" By Andrew Smallwood, it is unfortunately a Lightwave tutorial, but I don't know if some of it might be converted to Maya, because I don't know that much about Maya yet... --> https://www.cgfocus.com/ArticleDetails.cfm?ArticleID=89 there is a tip here for a Heat Haze effect in Maya... --> https://www.goat.com/alias/particles.html#heathaze "Creating Heat effects in Universe"... I don't know if something similar could be made i Maya... by using some other techniqes to get it done... --> https://www.gasoline-prod.com/electro...ips013-US.html maybe Denfo's Hot-Glass shader might help a bit... --> https://www.denfo.grc.ru/shaders.asp?...&sort=&page=06 to produce some of the effect e.g. for a Heat Haze sphere part of it... I don't know... as I have understood it, fog and Heat Haze is kind of the same category in a way... fog is just a kind of solid Heat Haze, were you can see throug the Heat Haze... and I have seen them mentioned in connection with "Volumetric Effects"... so maybe the plugin "Ray Marcher" which is free might help... --> https://www.lightengine3d.com/downloa...yMarcher1.html it should be a shading plugin that is allowing rendering of true volumetric effects... maybe this tutorial from Gnomon, can give some ideas also... "Spotlight Fog"... --> https://www.the-gnomon-workshop.com/t.../lightfog.html and this one from Gnomon also... "Controlling Fog Density"... --> https://www.thegnomonworkshop.com/tut...g_density.html they also have this one... "Simple Fog"... --> https://www.thegnomonworkshop.com/tut...imple_fog.html "Make your own Fast Environment Fog"... --> https://aw.aliaswavefront.com/pit/may...xt/tutor1.html "Moving Smoke"... --> https://aw.aliaswavefront.com/pit/may...xt/tutor2.html I don't know if this Tutorial by ZooRender... "How to create Real Smoke using Software Render"... maybe can be used if the smoke gets all colors away... an then is transparent an only reflect the light... --> https://www.zoorender.com/html/tutorials_zoo_smoke.htm for the motion of the Heat Haze, maybe some of the things in this "Candle Flame" tutorial from Gnomon can be used... --> https://www.thegnomonworkshop.com/tut...le/candle.html I don't know if some of this is useful or not... sometimes my mind is running faster than I can think... and I really don't know so much about Maya yet, that I have could try some of these thing in practice... but it is just some ideas and I have a feeling that it might be something like this... I would properly have to find a mindcooler before it is running again... regards Strarup