Well call me Dusty, I would never have believed it is common practice to use a belt sander to sharpen knives let alone SRs but I stand corrected thanks to unit's post. OTH I don't think I will be trying it any time soon myself, at least not on SRs. So I apologize for doubting anyone would ever try it on an SR. That said, glad to hear you were able to get an edge the conventional way with no apparent damage to your razor. You might find this section in the Library here of some use to you Category:Honing - Straight Razor Place Wiki . Be sure and ask for clarification if you need to.
Bob