Re: 1955 RDE-17 25 HP Johnson-mercury switch wire Home › Forum › Ask A Member › 1955 RDE-17 25 HP Johnson-mercury switch wire › Re: 1955 RDE-17 25 HP Johnson-mercury switch wire BuccaneerUS Member - 1 Year (includes $3 online payment fee)Replies: 7495Topics: 1072 July 29, 2018 at 6:20 pm #80324 If you’re in a hurry, try it, using a little oil for a coolant / lubricant. Otherwise, they make the same thing but for cutting metal. Prepare to be boarded!