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This is the Conversation Forum for How to Make a Hole in the Ice << A pedant writes... A pan full of boiling water >> Subject: Crack propogation? Posted Jan 7, 2003 by Wampus   Posting 1 I've never made a hole in ice before, but I would be concerned with causing cracks to propogate throught the ice, making it unsafe to tread. I would be especially concerned if I were using the explosive method, or the loading method. Read the First Reply to this Posting Subject: Crack propogation? Posted Jan 8, 2003 by Ukkeli, Keeper of Article Free English This is a reply to this Posting   Posting 2 If your using "normal" methods (drill, ice pick or saw) crack propagation is no problem. You can stand on edge of your brand new hole without fear of falling in. Holes made with loading are slightly trickier. Their edges can give in within few meters (depends on size of hole, bigger hole=>longer distance) of actual hole. This is because ice was all ready weak before anything fell throw. Blasting holes have different problems at least if ice is snow covered. If your not carefull you migth step on block that looks like it is intact, but actully floats freeely from main ice sheet. And if you manage to step on such block it migth turn upside down. But in general you can't cause cracks that would progate any considerable distance from hole made. So feel safe and have fun..... Conversation list Most of the content on h2g2 is created by h2g2's Researchers, who are members of the public. The views expressed are theirs and unless specifically stated are not those of the BBC. The BBC is not responsible for the content of any external sites referenced. In the event that you consider anything on this page to be in breach of the site's House Rules, please click on the relevant button to alert our Moderation Team. Conversation list

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