Grumpy, i think it would go without saying that you would need to be careful of the toxic fumes... hence the term "toxic". I have spent a bit on a top notch twin cartridge respirator, with some of the best cartridges for gas ect. I will use it outside in a well ventilated area. I brought the respirator because i use lots of super glue and epoxy, which if it builds up in the system it also isn't good.
I spoke to the local mower guru today and asked what he used, he said a sand blaster. He has a neat little unit in his shed the lucky bugger. I guess if you dont have a sand blaster handy the scrapping and wire brush and a bucket of elbow grease would do the trick too.
