How can I tell (visibly) whether the ski base is of sintered or extruded type?
Extruded bases had a waxy looking surface, like a Ptex candle. I haven't seen one in years. My last pair of skis with extruded bases had runaway straps. All of my snowboards have been sintered as well, even the Burton Craig Kelly (RIP) Junior I bought for my son 25 years ago.