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Old 12-19-2010, 05:15 PM   #1 (permalink)
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Question Sintered vs. Extruded bases

I'm just cuirous as to the difference between the two.

I'm under the impression that sintered bases are faster than extruded bases but why are they faster if my impressions are correct.

Also, does one base hold wax better than the other?
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Old 12-19-2010, 05:23 PM   #2 (permalink)
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a sintered base will hold more wax, so it'll be faster and require fewer waxings
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Old 12-19-2010, 05:33 PM   #3 (permalink)
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Quote:
Originally Posted by suicidelemming View Post
I'm just cuirous as to the difference between the two.

I'm under the impression that sintered bases are faster than extruded bases but why are they faster if my impressions are correct.

Also, does one base hold wax better than the other?
And be much more delicate than an extruded one. It's just softer, and takes a scratch really easily.
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Old 12-19-2010, 05:57 PM   #4 (permalink)
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a little quick wiki research

sintering

"Sintering is a method for making objects from powder, by heating the material in a sintering furnace[1] 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."


extruding

"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.
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Old 12-19-2010, 06:20 PM   #5 (permalink)
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Wikipedia has some good info.
Snowboard - Wikipedia, the free encyclopedia
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Old 12-19-2010, 07:07 PM   #6 (permalink)
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My opinion, based on just having moved to a sintered base this season: The sintered base doesn't give you a significantly higher top speed -- that's limited by other factors like wind resistance. But the sintered base allows you to accelerate faster and allows you to glide farther on the flats given the same initial speed. At the base of Mystery, I can glide right up to the lodge with my new board. With the old one, I came to a stop about halfway up the little hill going up to it.
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Old 12-19-2010, 08:39 PM   #7 (permalink)
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After putting 7 days on an Arbor Element and coming away with 3 core shots, I'll never even consider owning another sintered base. Any performance gains (I haven't noticed any significant ones) are negated big time by the sacrifice in durability.
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Old 12-19-2010, 09:03 PM   #8 (permalink)
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Your never summers are sintered...

Maybe the specific type used was the problem. Not just general sintered style.

I`ve been wondering if you were to get a base grind does that not make the sintered useless. Is it porous throughout the material.

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Old 12-19-2010, 09:14 PM   #9 (permalink)
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Quote:
Originally Posted by little devil View Post
Your never summers are sintered...

Maybe the specific type used was the problem. Not just general sintered style.

I`ve been wondering if you were to get a base grind does that not make the sintered useless. Is it porous throughout the material.

Durasurf is making cash....
You're right, I brain farted.
Sorry, long day. I'm barely conscious.

Not sure what makes the Arbor bases so soft.
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Old 12-20-2010, 03:42 AM   #10 (permalink)
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