Posts: 346
From: Milano, Italy
Registered: Jan 2004
posted January 10, 2013 02:50 AM
Hi Vidar, usually the center is a square on both sides of the spool, even if there are some spools that have a square on one side and a hole on the other side (the hole should be placed on the outside part of the spindle, when you load the spool on the projector).