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发表于 2011-6-11 22:22:06
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or… you can try this
"…Pipe cleaner will not go through the lip area. Tar may build up in the lip area, preventing a pipe cleaner from going through. If this happens, I take a miniature drill bit, insert as far as it goes and hand-turn clockwise. After twisting for a bit, generally the blockage begins to loosen up. Then you insert a bristly pipe cleaner to remove any excess. You may have to do this several times to remove all the tar.
Pipe cleaner will not go through the middle of the stem in a bent pipe. This is a very tricky situation. With a rubber stem ONLY, I may take a pipe cleaner with some vodka and try to dissolve any buildup first. Then I take a very thin paper clip and insert it carefully in the stem. I move the paperclip in and out very carefully. Generally this works, but you must be very careful. First, you do not want to have the paper clip break off in the stem, and, second, you do not want to damage the air hole. That is why I do not sharpen the end of the paperclip…."
http://pipedia.org/index.php?title=Try_this_at_Home
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