Ha shaving with aluminum doesn't sound like it would be fun for very long... I should have been more explicit, after using the adze to carve out wood(soft) for ~30min. I wasn't able to see much change in how sharp the edge was. This surprised me since RR spikes aren't supposed to be very hardenable.
Yepp this is my plan, need to build a better forge first, don't think I can get a high enough temperature with my current setup(see picture below). Maybe if I try MAP gas or something else it would be possible.