The other day, I wanted to go metal detecting with my Fisher F2, but it was supposed to rain a little. Undaunted, I went to the kitchen and got to work protecting my metal detector from the elements.
While it’s never a good idea to go metal detecting in a thunderstorm, swinging your Fisher F2 in a light drizzle is completely possible if you protect the electronics from water. It’s really simple, too, and only takes a few minutes.
Common Phillips screwdriver
One-gallon Ziploc baggie
Unscrew the housing
The control box on a Fisher F2 is held in place by two Phillips style screws in the aluminum shaft. Simply remove those and the box comes free. Be careful not to misplace the screws, as they are quite small. Also, don’t let the box fall to the ground.
Place a bag over the control box
I simply placed a one-gallon zip lock style sandwich baggie over the control box of my Fisher F2. Although it probably isn’t necessary, I measured where the screws would be and poked tiny holes in the bag to make re-threading them easier.
Re-install the control box
Getting the Fisher F2’s control box back on is the exact reverse of installation. Simply line it up with the holes in the aluminum shaft and turn the screws back in until they are snug. There is no need to over-tighten them; why risk damaging the threads?
Seal the baggie around the shaft and cable
Next, I closed the zip-lock portion of the baggie as snug as I could get it around the shaft and the coil’s cable. And that’s it! Your Fisher F2 is now ready to find treasure in the rain.
Note: Doing this will not waterproof the Fisher F2. It will simply make it so that water cannot get to the important electronics as long as the metal detector is standing upright. Be very careful when you lay it down to dig a find! The water can run up the cable and get through the opening in the baggie. So always keep the control box above the coil.
If you wish and if you think you’ll be metal detecting for multiple rainy days, you could likely close the hole up entirely with clear RTV sealant. Even if you did that, though, I’d still be very careful and keep my eye on things because the control box cannot get wet!
This same method will work for all metal detectors with a similar control box to the Fisher F2. For larger units, either use a bigger baggie or fashion another type of clear plastic around the housing.