Originally Posted by D(C)
It seems like everyone I know with a Lange/Rossi plug boots has cracked theirs. What's the problem? My R2002 have cracked on the cuff, down the inside back and on the instep. I have a friend who cracked his instep so badly, he couldn't use the boots anymore. What haven't they figured out in terms of materials? Has it gotten better with the RL11/R2005? What can one do to minimize the risk of cracking, short of being extremely attentive and drilling the ends of the cracks as soon as they start?
More than likely the cracking has more to do with, how they inject the platic into the mold, than it does with the material they are using. Grantedcertian types of plastic can have higher tendencies to crack, all of the platic used in ski boots, even WC stock, has a TG that is well bellow the temps that the bood is liely to encounter. Most likely the area where the boots are cracking is due to tow different "flow fronts" (I.E. where two diffreant molten flows of plastic meet in the mold)
As other have stated your best bet is to drill a small hole and the end of the crack to stop the crack propigation. This can then be sealed with silicone to keep the water tight.