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Question:

Why is steel wool impregnated into aluminum props?

Why do they stuff forged aluminum tubes with steel wool prior to forming them into propeller blades? Who came up with this idea?

Answer:

If you want to spend $20 get a hog shoulder at the local grocery storeYou can make ballistic gel,look it up on youtube its supposed to be easy and cheap to makeYou could get 6-7 milk jugs filled with water and shoot them and see how far the bullet goes.
wet newspaper (about 12 sheets folded in half to double to 24 sheets) purchase chicken backs at the butch for like 59 cents a pound and wrap the chicken back with the wet newspaper so it covers all of the chicken, after stuffing a good amount of wet newspaper in what was one the chest cavity to simulate the organs
The material used is lead woolIt is used for balancing the bladesThe material is stuffed into the holes in the blades after they are manufactured, and it has nothing to do with strengthDuring overhaul t is removed, the blades inspected by non-destructive methods ((liquid penetrant) and lead wool is again tamped into the bores until the weights are within tolerances.
I usually shoot at cans (usually soda) Cardboard of some kind or at milk jugs when I pull out my Marlin 795
I certainly have tried the dearer rounds of twenty-two ammo ($5 for a field of fifty) and that they don't seem to shoot to any extent further effective than the extra value-effective rounds so I certainly tend to purchase what ever i can get much less high priced (under $10 for a brick of 500)I certainly have never had them grimy up my weapons the two, I sparkling them as quickly as a 12 monthsI certainly have a Ruger 10/22, a Remington 597, plus a pair of previous bolt action 22'sThe hollow factors are not going to mushroom till as quickly as they have long gone by the paper aim.

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