Bosch 1619 and table mounting
As I once posted here before, the Bosch 1619 router is made to be used under a table with special provisions for disabling the springs. Recently, I think I discovered a kink in their design. If you have one of these routers, you might follow my description a little better.
On the 1619, the end of the fine height adjustment screw has a little ball which can be trapped by the stepped turret. The turret is used in plunge mode to limit the plunge to stepped increments. In table mode, the turret can be turned so as to trap the end of the adjustment screw, so that turning the screw will move the router up and down. This is where I found a slight problem. With the router attached to the table plate but removed from the table, you will notice that there is some wiggle room in the height adjustment. This is because there is play in the screw-turret connection allowing the router to move a few tenths of an inch without the screw being turned. Normally, the weight of the router will hold it down against the turret. But what I fear, is that during some router operations, the bit could be forced up, and it will move. This could ruin runs of styles and rails for instance which would sometimes fit and sometimes not. If anybody agrees with me, I will be glad to post a mod I created to eliminate this problem.