On 3/18/2010 2:30 PM, clipka wrote:
> Dave Blandston schrieb:
>> Hi there,
>>
>> This is just a simple bullet made as a lathe object. I wanted to
>> smooth the
>> sharp corners but I wasn't able to get any of the built-in curve types
>> to work
>> for that purpose. I had to use a linear_spline and make faceted
>> corners to round
>> them off. But anyway, you can't see any difference in the final
>> product, which
>> is a 7.62 x 39mm cartidge. I selected that particular round because it's
>> historically important, and there happens to be a diagram showing the
>> measurements on the Wikipedia website. (Actually, only the casing is a
>> linear_spline. The bullet itself is a cubic_spline.)
>
> The shape looks good. But shouldn't the material be different? Pointed
> projectiles made of (or coated with) a soft material such as copper
> doesn't make any sense to me (I'd expect something like steel, maybe
> with a core of lead), and I always thought the cartridge casing would
> typically be made of brass.
>
> Good-looking copper though. What settings did you use?
>
> Area light could do with a smaller size (or further away) - the shadow
> seems unnaturally soft for that small distance between bullet and wall.

No.  the shell is brass, the bullet shown would be a military full 
jacketed bullet, and copper alloy is the material of choice.  Steel 
would erode the barrels much too rapidly.  The core, yes, that's lead.

Rich.

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