Okay, it's time for some change in my decades old method of fluxing my alloy.
I've always used a form of wax, bullet lube or Marvelux. I'm done with Marvelux, corrosive and nasty. Don't think so? Try tossing the dross from a fluxed pot using Marvelux and toss it in a metal coffee can, you'll soon see.
Gathering sawdust won't be any issue, plenty of local lumber mills. Is it as simple as just tossing a good handful into my smelting pot and fluxing as usual? Once all the metal clips have floated to the top I remove them with a slotted metal spoon. Then I begin scrapping the sides and bottom, removing every little bit of impurities I can. Once I'm at that point and its time to flux, now what?
Once I have my ingots cleaned and its time to cast, what method using sawdust do I use? The same as usual and leave the burned dust on top of the melt?
This is why I joined castboolits. A person can cast for decades and still learn new things. And it is time for something new.
Thanks,
Murphy