Are you using oxy-acetylene cutting torch or other gas cutting torch now? Do you think it too costly because acetylene is very expensive? Now there is an revolutionary oxy-fuel cutting torch---------oxy-gasoline cutting torch, it uses regular gasoline as fuel instead of acetylene which can reduce fuel cost by 80-90%.
Test shows that the working amount of 3L gasoline = the working amount of 1 cylinder of acetylene.
Furthermore, it has following advantages:
1) outstanding safety: no backfash and no blast
2)fast cutting speed
3)clean cutting finish
Cutting thickness: 3-300mm