Burns achieves that electricity by exhaust velocity, alternatively than slower flowing gas with a larger quantity. That coupled with low backpressure( organic byproduct of valve overlap through cam profile). A: Indeed, it is achievable to sand stainless steel by hand, but it might be time-consuming and demands a wide range https://www.madanijayateknik.com/service/detail/as-round-bar-plate-sheet-stainless-steel-409-409l-409m-409cb-409ti