I recommend using www.whatever3d.com to narrow your search.  Some else here in the forum tried to cram this site down everybodies throats, but under this situation it may prove helpful.  I think Mock may have put out a free machete prop quite some time ago.  Check out is store here:
http://www.renderosity.com/mod/bcs/index.php?vendor=Mock

He might have what you want.