Join Date: May 2009
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a little quick wiki research
"Sintering is a method for making objects from powder, by heating the material in a sintering furnace below its melting point (solid state sintering) until its particles adhere to each other."
"Sintered ultra high molecular weight polyethylene materials are used as ski and snowboard base materials. The porous texture allows wax to be retained within the structure of the base material, thus providing a more durable wax coating."
"extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section. "
think play dough fun factory.
not porous, absorbs less wax, a little tougher.
I have boards with both and i really don't think its a big deal. A dry unwaxed sintered base is slower then extruded one. Both freshly waxed the sintered a little faster. Sintered seems to be more affected by snow conditions, wet, dry ect. Extruded always just works. If you need more speed point it from higher up.
I had an Option with a sintered 7000 base (number relates to density?) with a gallium additive, that was a fast base.