Milling Ball Bearings
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A milling ball bearing to create a small circular hole, as shown in (A). The milling ball bearing has a spherical tip with groves creating holes.
Galleries
Blacksmithing and MetalworkSource
Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902)
Downloads
2400×1817, 739.4 KiB
1024×775, 142.4 KiB
640×484, 77.2 KiB
320×242, 27.3 KiB