I totally agree with WIBOWYER. Ipe dust is nasty stuff. I just can't see it being good for you. To solve part of that problem, I purchased a portable dust filtration system. I have it mounted upside down under my main workbench. Keeps it out of the way. It has 2 speeds, and on high, it moves a LOT of air. Totally recircs the air in my shop every 2 minutes. Filters down to 5 microns particle size. Cost about $100. Doesn't totally solve the problem, but it helps a bunch.
It has a two part filter... a sponge large particle filter on the end, and a cone shaped paper filter inside, both of which can be replaced and cleaned. If I turn this thing on full blast, and wear my respirator, ipe is tolerable.
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