To pick the best motor for your application, you should consider the following factors: 1  Max Thrust. 2  Current Draw. 3  Efficiency. 4  Weight.
Describe the basic technique of replica plating. Replica plating is a transfer technique that may be used to produce multiple copies of a particular colonial arrangement on a number of agar plates.
Trepanning Manufacturing Basics. Trepanning is a manufacturing process used to produce holes or circular grooves by using one or more cutters and revolving them around a center.Trepanning machining is used to produce the following features and parts: 1  Low volume disks from flat stock.2  Disks can be fabricated up to .25 (6.35mm) thick and 6 (152mm) in diameter. 3  Large diameter through holes in flat stock.repanning machining is used to produce the following features and parts: 1  Low volume disks from flat stock. 2  Large diameter through holes in flat stock. 3  Machining internal and external circular grooves or o-ring glands. 4  Deep holes 2 (50.8mm) or more in diameter.