Erbauer ERB658ASR belt sander replacement base plate

[Penllysbach]

Morning all, I need to replace the plate that guides the sanding belt, it has worn and become sharp. I have had a good look online but looks like spares are not available. Any thoughts, suggestions pls.
Thanks in advance

 

[Penllysbach]

Might help if I give details ... Erbauer ERB658SDR