PLASMA CUTTING

Dear Sir/s and Respected People of the CR4,

I have a requirement for cutting runner raisers of investment precision castings, the raiser thickness varies from 10mm to 35mm and above. I am looking forward to use air plasma, for the cutting as I understand, that, its less time consuming, cost effective and lesser material loss is generated in compare to oxy-acyetlene gas cutting. I am facing the only problem is that, the gap i have between the main tree and job, i.e. the lenght of the raiser is 25 to 35mm wide, I am facing a problem as to the torch of the plasma is not reaching to the actual depth where i am suppose to cut, where by the arc is not developed. Again, the quality of the cutting is secondary or almost not that important, I request emminent personalities around here to guide me as to how, should i solve this problem, are there any torches available for smaller gap cutting in plasma. Your assistance, will be generously appreciated.

Thankyou,

RAJIV DAMANI

RAJKOT