DIY Low Ohm Resistor For Current Measurement

Making a 0.1 ohm resistor for an upcoming project where I will take short term amperage measurements of up to 20 amps. The first resistor is made using nichrome wire which is used in toasters, space heaters, kettles, etc.
I also show a 0.1 ohm resistor made using the steel from a 'twist-tie'.