Well, I went to the local lumber yard this morning and got a coffee can full of sawdust. The young man that was helping me looked like he couldn't understand why anyone would want anything they just threw away, so I told him what I was doing.
This was the first time I had really given sawdust a good try and was very pleased with the results. I have always used a pinch of bullet lube in the past as most of the manuals tell you. After reading numerous time on this forum about using sawdust I tried it. I think it fluxes better than lube and the smoke doesn't make you gag. One thing I did different was to leave the the impurities and chard sawdust on the top of the molten alloy. This way I wasn't removing any tin or antimony from the mix. Since I take my lead from the bottom of the pot in my 4-20 Lee pot I think it's best to do it this way.
I would encourage anyone to use sawdust.
Skeet1