Hi Guys, quote This is a proper realflow job to get proper control of what you are wanting to do... unquote quote Bah, nothing that a bit of scripting with nparticles wouldent do! unquote both these responses have me interested. I have done job on RF4 for melting which came out great. As regards dust raising up using RF4, I am not quite clear on this. Would appreciate further explanation on this. Also, scripting with nparticles!!!! Have never tried scripting in Maya though done a bit of business coding earlier. Is there one similar or close enough that I can see and say emulate???? Regards, GP