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From: rxzxxidrcd
Date: 6/25/2007
Time: 7:01:06 AM
Remote Name: 209.205.196.2
The rotating horizontal spindle to which the chuck is attached is usually driven at speeds that can be varied. The cutting tool is fixed onto a tool rest and manipulated by hand. It can also be power driven on straight paths parallel or perpendicular to the work axis. This is useful for screw cutting. Internal turning known as boring results in the enlargement of an already existing hole. The holes are more accurate in roundness, concentricity, and parallelism than drilled holes. A hole is bored with a single-point-cutting tool that feeds along the inside of the work piece. Shaping Machine The shaping machine is used to machine flat surfaces, grooves, shoulders, T-slots, and angular surfaces with single-point tools. The cutting tool on the shaper oscillates, cutting on the forward stroke, with the work piece feeding automatically toward the tool during each return stroke. Drilling Machine The drilling machine is used to cut holes in metal with a twist drill. By changing the cutting tool, they ca ... http://hgh.lx.ro There are several types of birth control widely used to prevent pregnancy. Some methods are for men and some for women. If you are having sex with your partner while using any type of birth control, you must remember that all these types of birth control have failure rate, e.g., latex condoms and diaphragms having 15-20% failure rate while in case of birth control pills, injection, sterilization and IUD you have to bear a risk of about 5%. Various types of birth control are described below: Male Condom It is the most common method, easily available and of course is not expensive. It is sold without a doctor’s prescription. You can buy condom from any super Store, medical store or any other related shops. Mostly it is made of latex rubber that should be put on erect penis before having sex. It prevents the partners from pregnancy as well as STD (sexually transmitted disease). Female Condom It is a 17 Cm long pouch that has two rings at both ends. Women wear it before having sex. Open end has a slightly large ...