primary supports

To: tesla-at-pupman-dot-com
Subject: primary supports
From: Fucian-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Fri, 03 Mar 2000 20:33:14 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

can some one tell me how to build a conical primary ?it looks hard and 
detering