The Vibra-Bucket assists the otherwise tedious screening of fine mesh sands; it makes this task easier! It has a 30W industrial vibrator mounted inside a 5 gal heavy duty steel pail with a further reinforcing bottom board. A special flat rimmed (short) 3.5 gal plastic bucket fits above the motor to hold the screen and catch the sand. The flat rim gets the vibration transferred from the metal pail. Sections of rubber tape inside the steel pail rim provide a snug fit with air gaps, so that there will never be a "stuck bucket" due to a vacuum seal. The base plate keeps the pail bottom flat by preventing the rim from digging into the ground and dampening the vibration.
When tested with a 8 lb (1/2 gal) 3/1 mix of -12M/+12M actual placer sand it delivers 97% and 99% in 1 and 2 minutes at full vibration. The speed controller provides turning down the force to MEDIUM range where it will screen about twice as fast as the test above. In this way, the sand stays closer to the screen which allows more particles to find the holes. Full force is needed at first to help stir a heavier load at start, but more shallow batches are recommended. Stirring the sand in the screen does assist the time when a lot (too much) of sand is placed on the screen.
The last video shows how a gallon of waste magnetite was re-screened to -12M and it goes through in about 15 seconds and the added weight dampens the sound !
The vibration motor is 115V AC. An inverter is available as an option to work with 12V DC in the field. To keep it from "walking" away during each run, simply tie a cord to the handle and to a support. (CAUTION: Do not hold with hands or feet; High Vibration Hazard!)
When tested with a 8 lb (1/2 gal) 3/1 mix of -12M/+12M actual placer sand it delivers 97% and 99% in 1 and 2 minutes at full vibration. The speed controller provides turning down the force to MEDIUM range where it will screen about twice as fast as the test above. In this way, the sand stays closer to the screen which allows more particles to find the holes. Full force is needed at first to help stir a heavier load at start, but more shallow batches are recommended. Stirring the sand in the screen does assist the time when a lot (too much) of sand is placed on the screen.
The last video shows how a gallon of waste magnetite was re-screened to -12M and it goes through in about 15 seconds and the added weight dampens the sound !
The vibration motor is 115V AC. An inverter is available as an option to work with 12V DC in the field. To keep it from "walking" away during each run, simply tie a cord to the handle and to a support. (CAUTION: Do not hold with hands or feet; High Vibration Hazard!)
Vibra-Bucket Demos