Inside Corner, T-weld oxy-fuel

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I could weld a decent bead in the 70's when I first took classes, but have not touched a torch since, so I consider myself a rank amateur.  I'm taking a class at the local Comm. College and have got my flat butt weld looking good.  Last night I tried an inside corner (t-weld) on 1/8 mild steel.  It took forever to get a measley puddle.  I switched from a 1 tip to a 2 and tried different pressures and more gas at the torch, but could never really get the base metal to melt right.  The work piece got real hot, but the puddle wasn't really there.  The teacher is not much of a gas welder and could not help me.My thought is that I need more heat- maybe try a 3 tip (Victor)?  Am I missing something?  If anyone is a good hand at gas welding I would appreciate suggestions.Thank you!
Reply:C'est, Welcome, great to hear your getting back at it. School sure has changed in 30+ years.The Victor reference card I have shows for 1/8"-3/16" metal thickness (thinking this is for mild steel) tip size 3, drill size 53, Oxygen pressure 4/7, Acetylene pressure 3/6. So clean parts up and put the  heat to it. T joint will take more heat input than a flat butt joint.Post some pics of how it turns out.
Reply:Yep, The inside corner takes much more heat then any other configuration. I normally find myself 2 tip sizes up from a butt weld in the same material. Too bad the teacher isnt much of a weldor, doesnt help things much. One thing that will help you, is to put a 1/16" gap between the parts. In fact thats the proper method, it allows the flame to go under the vertical plate, and not bounce back so much to overheat the tip and cause popping.It also helps with fusion to the backside of the plate.
Reply:Gentlemen,Thanks for the feedback.  I'll give it a try and see what happens.