The plate sometimes separates from the wheel- the welds aren't that great. In years gone by I've picked up some swap meet finds for cheap without the plate. They are not much fun to hand-fabricate BTW.
As the drill sergeant said, "I taught you everything you know. I didn't teach you everything I know."
"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams