Speedmaster intake porting. Hopefully I can make something out of this

I like the finish, but how do you get the carbide thoughts out??? That’s the biggest issue I fight. No matter what I do, the walls are always wavy and there are troughs and ridges I can’t get smoothed down with a burr, so I hit them with a paper roll to get all that in shape.

My technique with the burr must suck.
I don't think it's as much the technique that sucks as the hands. Seriously I wonder how you get it done sometimes without losing control of the grinder due to lack of feeling. As you know you ain't as young as you used to be lol.

Really enjoy the threads pbr, It's much more fun to just scroll through other peoples porting threads. But I will say it is still a motivator to get out the grinder on my buddy's spreedmasters, and I can use all the motivating I can get!