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

My version of “burr finish” is to just skip that sandpaper rolls.

So, for me...... it is a time saver.

I just use an old dull carbide for ferrous metals....... and call it good.

View attachment 1715674652

View attachment 1715674653


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.