Instructables

Step 5: Fasten Chalk Holders

Picture of Fasten Chalk Holders
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Hold the aluminum extrusion up to the edge of the table. Make sure it is lined up where you want to install it and then drill 5/32" pilot holes to correspond with the center of each hole in the aluminum extrusion.

Once you have drilled all the pilot holes, attach the piece of aluminum with your screws.