Topsheet Wrinkle Issue
Moderators: Head Monkey, kelvin, bigKam, skidesmond, chrismp
Topsheet Wrinkle Issue
So sometimes, but not all the time when I press a pair of skis the topsheet will wrinkle right in the center 6"-8" or so of the ski. It kind of looks like waves with about a 1" wavelength. I don't think the topsheet is expanding with the heat, though I do heat to 170F. The topsheeet seems to be flat and smooth during layup as well. Maybe as my pneumatic press pushes down, it hits the tips first and squeezes toward the middle, creating the wrinkles... anyone else ever have this issue? Or have any ideas? Thank you!
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I am just guessing here but it may be what they call "bridging" where the tip and tail come down hard enough that is "pinches" the ski and won't let it spread out. Try shimming up in the center ontop of the air bag to get a bit more contact in the center before it all presses. Are you moving the top down again the lower formblock. If so maybe you are pressing too hard before you fire off the airbags. Just a guess here since I don't know what your setup looks like.
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