Metal Mickey
Well-Known Member
- Joined
- Jul 5, 2008
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I am stuck!!!
I have a 7" long by 1.5" diameter HT steel bar that I need to saw in half for two crankshaft blanks for the Seal project I am building.
I tapped one end to fit two 'ears' of steel so I could hold it and have tried carbide tipped saw, band saw and now a 4" diameter slitting saw. All will make some impact on cutting it but is seems very brutal and a long long job to make any headway. I will post some photo's later to show what I mean but has anyone any ideas?
I have thought about using stainless steel instead and wonder what thoughts you have on the durability that will give? Westbury states in his article that HT would be best (if available) but since this was written in 1947 and there were steel shortages after the second world war, he does say ".....medium alloy steel, about 35 to 50 tons tensile strength, but in view of the present supply difficulties, constructors.........may have to use mild steel, which will be satisfactory as to mechanical strength, but somewhat inferior in respect of wearing properties".
Since stainless in bar form is available I just wonder whether the effort to get the HT steel cut is blocking my progress when Stainless may do? Any help on either cutting or changing to stainless would be appreciated.
I checked the Craftsman Museum page but they don't state the material used. I therefore have asked Craig or Tom for there cranks material as well.
MM
I have a 7" long by 1.5" diameter HT steel bar that I need to saw in half for two crankshaft blanks for the Seal project I am building.
I tapped one end to fit two 'ears' of steel so I could hold it and have tried carbide tipped saw, band saw and now a 4" diameter slitting saw. All will make some impact on cutting it but is seems very brutal and a long long job to make any headway. I will post some photo's later to show what I mean but has anyone any ideas?
I have thought about using stainless steel instead and wonder what thoughts you have on the durability that will give? Westbury states in his article that HT would be best (if available) but since this was written in 1947 and there were steel shortages after the second world war, he does say ".....medium alloy steel, about 35 to 50 tons tensile strength, but in view of the present supply difficulties, constructors.........may have to use mild steel, which will be satisfactory as to mechanical strength, but somewhat inferior in respect of wearing properties".
Since stainless in bar form is available I just wonder whether the effort to get the HT steel cut is blocking my progress when Stainless may do? Any help on either cutting or changing to stainless would be appreciated.
I checked the Craftsman Museum page but they don't state the material used. I therefore have asked Craig or Tom for there cranks material as well.
MM