Bro how to repair the bottom corners of aluminium frame & pvc bathroom door which got Corroded & eroded due touch of water. Only bottom corners where both frames engaged together got damaged. Means L shape area. I repaired selfin house once by putting L shape metallic part purchased from hardware shop however it is also now worned out/ eroded. Hence please advise whether it can be repaired at home or from fabricator/ carpenter or to replace complete door would be better. However pvc part & balance aluminium frame is still excellent only corners got damaged. Thanks!