Maybe wax up the antler bases prior to the saran wrap treatment as an extra layer of waterproofing to keep the bases from turning dark? I wonder if dripping a candle would do it and then hitting it with a heat gun to get it off? Parafin? Just thinking out loud here.
Not sure, but once I get cooler cut and cleaned up, I can see where the antlers are hitting on the notch. Then any of the above ideas may have merit. Know later tonight hopefully.
