copper handled file 5/23/13

[amertrac]

a 10 inch brass handled file fine grain and when held in the light the teeth gave a spiral effect. maybe for valve  guides.

[amertrac]

[rusty]

The round spiral file is a standard pattern.

The copper handle looks like a recycled small gas bottle....

hmm

[Bill Houghton]

When I was a kid, little metal bottles like that were all the rage for making your own rocket.  You'd set up a device that punched a hole in the cap end, and it would  take off.  I think they were filled with carbon dioxide or something similar.

[BruceS]

Correct with CO2.   The bottles had many uses.   Seltzer water bottles,  USN life jackets,  BB pistols.

[Branson]

When I was a kid, little metal bottles like that were all the rage for making your own rocket.  You'd set up a device that punched a hole in the cap end, and it would  take off.  I think they were filled with carbon dioxide or something similar.

We made grenades out of them.  Drilled out the cap with a 3/32 bit for the underwater cannon fuse, filled them with black powder and they made a great bang.

[BruceS]

Grenades ??

You would be labeled a terrorist these days.    But that's OK   !    Try making a mortar with steel pipe pounded into a fire pit and then drop in  aerosol cans,  great booms too.  Schedule 80 if you can get it.