Paul Eastham
Well Known Member
So we all know that scratches are bad, right? What about scratches inside bolt holes (i.e. in thick stock)? On various assemblies, if the drill goes crooked a little, or after repeated match-drilling, I occasionally notice some lines inside the hole. Should I worry?
Sometimes the directions actually encourage this problem, I think...when they ask you to drill, then insert thick spacers and re-drill, often the angle of one of the layers is changed, leading to some off-angle gouging. Example: HS-to-fuse attach bracket spacers (7/9 models).
Next airplane (heh), I think I will try to get more undersize bits so that I can ream the holes to final dimensions.
Paul
Sometimes the directions actually encourage this problem, I think...when they ask you to drill, then insert thick spacers and re-drill, often the angle of one of the layers is changed, leading to some off-angle gouging. Example: HS-to-fuse attach bracket spacers (7/9 models).
Next airplane (heh), I think I will try to get more undersize bits so that I can ream the holes to final dimensions.
Paul