Two Factor Authentication Key Cleaning your temporary files directory Your Temporary Files directory (called Temp-directory in your site's Global Configuration page) is the directory where Joomla! and its extensions put all transient files when installing software or performing other kinds ofOne problem with that directory is that sometimes files can get stuck in it, for example after a failed update. This not only causes a space problem —as these files take up valuable disk space— but can also compromise your site's security as these files may contain potentially sensitive information, or may be executable PHPWhile the latter issue can be usually worked around by using the front-end protection mode in the .htaccess Maker feature of Admin Tools Professional, the proper solution is to periodically clean the contents Admin Tools Core and Admin Tools Professional include the Clean Temp-directory feature which will do that for

you with a single click! More specifically, it will automatically remove all files and directories from your Temp-directory except index.html and .htaccess, if any of those files exists. Admin Tools asks Joomla! to tell it where the temporary directory is located and then asks Joomla! to delete its contents. This has a couple of pitfalls: Your temporary directory is what you have configured in your site's Global Configuration page, in theIf you see something like tmp or /tmp in there please note that it is NOT the same as the directory inside your site named tmp. your site is a full path which usually looks like If your temporary directory is outside your site's root or contains double dots (e.g. .. will REFUSE to delete its contents. not a bug in Admin Tools, it's how Joomla! itself is designed to Being able to delete the contents of the directory depends largely on its permissions. permissions to this directory it can create temporary files just

fine and delete them when it still knows their name (right after creating them), but not when Admin Tools asks it to delete the contents of the temp-directory. The reason is quite technical:can't list the contents of the directory, therefore it can't know which files / folders it contains and as a result doesn't know what it has to delete. This is how filesystems work, not a bug in Admin Tools. On some servers you may need to use Joomla!'s FTP layer to delete the contents of the temp-directory. We consider this a major indicator of a critically bad server security model. are hosted on such a server we strongly advise you to move to a different host or, at the very least, express your concerns toEach site should run under its own user and never, ever, require the FTP layer. Vacuum Venting Keeps Molds Running Longer Click Image to Enlarge Portable Mold-Vac evacuation systems help Infinity Molding double or triple the time between mold cleanings and also reduce rejects, says Joseph Crowdus, v.p. of technical services.

In tough economic times, facing hungry competition here and abroad, molders cannot afford to ignore preventable problems that slow cycles, cost machine downtime and mold maintenance, and waste material on reject parts. One unnecessary drag on productivity is gas and air entrapment in the mold, which is not always cured by conventional venting approaches. vacuum cleaner egyptThat lesson was learned by Infinity Molding & Assembly Inc. in Mt. Vernon, Ind., a $15-million custom injection molder of parts for transportation, electronic, and medical markets. vax vacuum cleaner bagsInfinity molds resins such as PPS, acetal, rigid PVC, PPA, LCP, PC, and PBT on 40 presses from 35 to 610 tons. buy vacuum cleaner cyprusMany of the parts are small and complex.

Poor venting can take a toll on the product and the process, says Joseph Crowdus, v.p. of technical services. “It can result in flashing, voids, bubbles, burn marks, and flow lines on the part. But more devastating is the potential for frequent production downtime for mold maintenance from contamination or tool erosion.”In one case, Infinity was molding a thinwall battery component of clear, rigid PVC. “The parts were tiny, the shot size was 20 g, and we ran it in a multi-cavity tool,” says Crowdus. “The tool was vented in a traditional manner, but we had fits running the part. The vents weren’t able to fully evacuate air from the mold. Trapped air caused burn marks on the parts and short shots.” Infinity considered the option of slowing injection to make sure the mold vented adequately, but that caused short shots.In addition, polymer residue remaining from the interaction with the trapped gas would build up and clog the vent channels after just a few days of operation, prompting a shutdown for mold maintenance.

“Once the vent is clogged there is nothing you can do but clean the mold,” Crowdus says. Infinity breaks the mold down completely for cleaning and maintenance. The mold could be out of production from one work shift to an entire day, not to mention the off-spec parts made before production was halted.To eliminate gas entrapment, Infinity purchased a Mold-Vac air/gas evacuation system from CAE Services Corp. The self-contained, stand-alone system pulls a vacuum on the vents during injection, and its patented air blowback function assists in ejection and helps clean and purge the vents and ejector pins after every cycle. “The blowback feature helps the tool to stay cleaner longer, and is a real benefit in extending time between cleanings. We run it on every cycle,” says Crowdus.The microprocessor controlling both the vacuum and blowback functions receives a signal from the injection press then applies a vacuum that can be adjusted from 0 to 24 mm Hg. The system purges air at a rate of 0.02 cu in./sec, said to be the fastest in the industry.