CK....I have a guy who says he can do it. If it works I will post his process. Also, Ed has done it himself. In short, Velvet tan in the field, once home, he covers antlers with plastic, boils skull briefly and then power washes skull clean. After that he freezes entire thing for 3 months and it has worked for him.
The Ulmer Edge left a blood trail like none I have ever seen. It look like gallons of blood poured out with a bucket. The two misses, one was destroyed on rocks, the other survived, but will be permanent practice head. The blades were all dinged up from the rocks, do I will use it for practice.