Chatter marks in the sandstone immediately below the thrust in the Big Glen area also support an eastward movement of the over-riding slab.
The spacing between the
chatter marks will indicate whether it is the contact roller or a defective abrasive belt.
[bar] A large Kraak dish, above, showing its age and the back of the dish, left, exhibits
chatter marksIf the reamer was properly loaded, you should find no
chatter marks. And if you were careful in mounting the barrel in the milling vise, you haven't left a single mark on the barrel's bluing.
"They hear 'hard milling' and they start thinking about an end mill whipping back and forth and putting
chatter marks up and down their mold.
A new feature of this line (which HPM will use on future optical-quality sheet lines) is the drive system, designed to minimize "
chatter marks" on the sheet.
Both series feature [Chatterless.sup.TM] flute geometry to inhibit
chatter marks, plus [Grayhone.sup.TM] microhoning process that eliminates the need for tool break-in periods.
The base also exhibits "
chatter marks", thin lines in the paste at right angles to the footrim, caused when the base was trimmed on the wheel.
Watch out for deep "
chatter marks" (a wavy surface left by the milling machine).
In practical terms, the smoother surface finish, elimination of
chatter marks, and improved overall cut times required by aerospace contractors drove the decision made by IMTA to use this type of control.
It is a chipless process and often avoids secondary steps such as grinding burrs or
chatter marks. Collecting and cleaning metal scrap and recycling oil are eliminated.