ORIGINAL: Balsa Master
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All this from one fiberglass job, a small telescope tube.
theres no way, there must have been some other reason with it. its not possible to breath in that much dust making a small tube. (unless he sanded it day in and day out for weeks)
wear a mask but dont kill urself over it.
Since you don't know all the details, I'll take your calloused statement as being off the cuff. This tragedy has affected my immediate family and I have no desire to discuss it further.
If you choose to not wear a mask, you and your family might suffer a similar fate. Don't let down your guard.