I'm planning on making a knife from scratch. my tools at hand will be: belt grinder, angle grinder, stones, paper etc and for HT i will have a 150kw handheld propane burner, acetylene torch (very big and beefy), and then i'm investing in a thermocouple and an instrument to plug it into. for tempering i will get one of these cheap tabletop mini ovens. I was planning on putting the blade in a steel tube and crank up the heat until i get them temps i want. This is not really a serious/pro or very repeatable way of HT-ing steel and i know that So now i would like to hear from you guys which steels you think is appropriate for this way of HT-ing. Obviously SS and tool steels are out of the question. I know 1095 and similar will work pretty well. But in reality i want to do O1, but i'm not really sure my low tech approach will be able to keep a constant temp for the longer soak times it requires to get good. so i found these the most interesting: UHB 20C (1095) UHB 15N20 - C-0,75 Si-0,3 MN-0,4 Ni-2,0 80CrV2 - C=0,85 Cr=0,6 V=0,15 Mn=0,35 UHB 26C3 - C-1,25 Si-0,25 MN-0,4 Cr-0,3 Uddeholm Arne (O1) 100Cr6 (only round stock) approx C 1,0 Si 0,25 Mn 0,3 Cr 1,5 Ni ≤ 0,4 90MnCrV8 (O2) - C 0.85-0.95% Si-0.1-0.4% Mn-1.8-2.2% Cr-0.2-0.5% V-0.05-0.2% Böhler K510, 115CrV3 (only round stock) C 1,18% Si 0,25% Mn 0,30% Cr 0,70% V 0,10%. Which one of these is most friendly for low tech HH-ing would you guys guess (except for the 1095 of course)? I'm guessing the lower they are alloyed the more optimal (well) i will be able to get the HT. I wonder what i can get away with here. should i forget O1 completely?