the plate is phenolic resin. It is dipping slightly between the router bit and the short edge of the plate. The dip is actually in the resin. Again, i dont think anyone would notice if they were using wood over 18" long. but I was routing a piece about 6" square, so the whole work piece was on the plate. It caught as the piece traveled out to the side and went over the lip to the table proper. I've levelled the plate all the way around, a few times now, but this is sinking again, just enough to not meet the table over about a 2" section of the edge. The router is a big heavy makita, I think its just too much weight.
I am a shooter, totally understand bullet proof (G). I like the idea of steel, but my problem buying from canada is shipping and import duty. i can be sure that final cost to my door would be triple the shop retail price. I have a friend back in the UK who has some metalworking machinery. i think I shall ask him to make me a 3/8" ground surface plate.
Sfchuck; the plate itself has a dip in it, causing the small pieces I rout to rise and dip, and then catch momentarily on the edge. I cant see a way of fixing this plate, just need to work out what its going to cost me to replace it.