Start investgating cheap/small brake pump
i have used an tire compresor that can go to 12 atm and reversed the valve
now i am searching for an vacuum tank 1-2l so that we can stop the pump and start it only when preasure goes below 4atm
the pump is realy small 80mm by 35mm and realy quiet (can be heard
)
cost of pump with gauge 7 USD
