The companies that we buy our edgetape from do have the T moulding but it is getting harder to get because there isn't much of a call for it(in Australia) any more. 1mm and 2mm thick ABS or PVC edgetape is the demand at the moment.
I have to talk to our suppliers in the next few days I shall ask them about the T moulding
thanks mate! Yeah the arcade guys are about the only ones still using it these day