The grenade was accidentally found in the forest and was claimed to be a practice one. That's why it was just hidden in a box and waited in the wings until it was decided once to change it into a ball grenade.
First and foremost, it was necessary to find information. The Soviet F1 hand grenade contains a 60 gram explosive charge, its total weight is 600 grams.
The standard time delay for this fuze is 3.5 to 4 seconds. The distance the grenade can be thrown is estimated at 30–45 meters. The radius of the shrapnel dispersion is up to 200 meters.
Let's take solvent, a bit of dye (green), silver stain, polishing paper, a brush and a screwdriver.