".", "*", "?", "+", "(", ")", "{", "}", "[", "]", "^" and "$". This becomes important when typing (www.domain.com) it would have to look like (www.domain.com)

Parentheses are used to group items together to be marked as what is to be matched, such as "(apple)*" would match all of string "appleappleapple".

You can see more helpful expression tips here, http://www.isapirewrite.com/docs/examples

Some examples of rules you will see in httpd.ini file look like this:

#manual redirect of one domain RewriteCond Host: (www.)?domain1.com RewriteRule (.*) /domain1$2

#redirecting to another URL RewriteCond Host: (www.)?domain1.com RewriteRule (.+) http://www.domain2.com$1 [R]

#Rewrite just one domain but keep old link working RewriteCond Host: (www.)?domain1.com RewriteRule (?!/domain1)(.*) /domain1$2 [I]

Many tricks come with a catch, and this is no exception. One disadvantage that I have come across is that response.write from ASP or ASP.NET does not work well in conjunction with this component. Absolute paths are required since relative paths are done after ISAPI Rewrite handles request and aren't redirected as would be expected. The workaround is to use absolute paths with full domain name in redirect. If Server.Transfer is to be used, it should be tested as well. It runs into similar issues.

Additionally, when using ASP or ASP.NET, new virtual root folder should be marked as an application so that new virtual root's folder is used for global.asa(x), web.config and /bin.

By filling up all free space, impurities are effectively prevented from entering and damaging bearings and lubricating intervals can be extended.

For most other greases, general rule applies.

Bearings can be divided into two categories - non-separable and separable bearings. No matter which bearing type it is, general practice is to fill up space between inner race, outer race, and rolling components (ball or roller) on both sides of bearing. Because of its consistency, grease should be able to remain in place without dropping off. In this way, we can ensure that rubbing contact surface actually has grease on it.

For relubrication, how much is enough? The following formula gives a good indication:

G = 0.005 DB

where, G = grease quantity in grams D = bearing outside diameter in mm B = total bearing width in mm

By practicing proper lubrication, bearings should be able to last for a long time. However, bearings can still fail if it has not been installed properly or for other reasons.

Until next time...

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