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The centering mandrel is used to precisely align the router collet with the template guide. With the template guide
loosely installed, put the mandrel through the template guide and fix it in the router collet. Then, raise cone of the
mandrel until it seats in the template guide. While the cone holds the template guide in place, tighten it. Remove the
centering mandrel. Now your collet and template guide are perfectly aligned. This centering mandrel is made by Festool,
but will work in any router that has a 1/4″ or 8mm collet. The maximum diameter of the cone(and largest template
guide that can be centered) is 40mm (1-9/16″).

Please note: this tool is to be used for setup only. DO NOT operate your router with this tool installed.