Ok so I'll get right to it.
Not happy with these marks at all. If deburring is to reduce stress that could form a crack these marks can't be helping. Im a new builder. This was done with a standard 3 flute countersink cutter that has come with most of our tool kits. I do have mine attached to a low RPM cordless screwdriver. While using it i only use the weight of the tool it self as I'm worried about over doing it.1 rpm per hole. (I have a timing mark on the cutter). While I do have a Zero flute cutter on the way I just wanna ask you guys if you think this is still Airworthy.
Thoughts?
Not happy with these marks at all. If deburring is to reduce stress that could form a crack these marks can't be helping. Im a new builder. This was done with a standard 3 flute countersink cutter that has come with most of our tool kits. I do have mine attached to a low RPM cordless screwdriver. While using it i only use the weight of the tool it self as I'm worried about over doing it.1 rpm per hole. (I have a timing mark on the cutter). While I do have a Zero flute cutter on the way I just wanna ask you guys if you think this is still Airworthy.
Thoughts?