DIY power hammer step by step home forge equipment

DIY power hammer (tire hammer) from an old trailer and an old press drill. Power Tools: Press drill (you can use it: electric drill, cordless drill) Band saw (you can use it: chop saw, mitre saw) CO2 mig, mag welding machine (you can use it: any welding machine) Angle Grinder, belt grinder I bought the material: 52, 00 USD Calculating the diameter of the drive roller. Enter the engine speed, wheel diameter, how many strokes per minute you want. You may need a cm to inch converter