hi michael liking the look of this! will download soon....just wondering as there was a bit of talk about holes...could you consider the concept of a "master hole" whereby if a hole object created or duplicated a user can later on change the single master hole diameter to change all such hole sizes...in coreldraw this is done with "clone" command but ot needs a bit too much discipline to remember always to duplicate the clone hole, nonetheless its really useful in certain instances, not really parametric but very simple and very useful; espescially as a lot of times in simple sheet metal or planar work changing fixings types often mean changing hole sizes all over again and again - with even 10 holes or 100# that can be very tedious work..im thinking the object manager "master object" could maybe be used to acheive this in a creative way?