Just refletched about a dozen arrows today.

Used a semi-dull knife to remove the old fletching. Be careful if you use carbon shafts and dont cut into the shaft. Some of the old glue will still be on the shaft, but Acetone will easily remove it in a few minutes. You can buy Acetone at any Wal-mart. Wipe the shaft down with 90% Isopropol alcohol and your ready to glue on new fletching.

Takes me about 20 min. to prep a dozen fletched arrows for new fletching.