CESSCO Knows ICS Pool Skimmer Installation Special Sale: Buy any TWO ICS Diamond Chains and get a matching guide bar FREE Information to help you get the most of your ICS Investment. Cut Further, faster, and smarter. Application: Pool Skimmer Installation Click Here: for a printable copy of this page. FREE Ground Freight (Continental U.S.) - Click here for details on our shipping policies. ICS Method - 27 minutes 1. Score cut the opening, including the mitered sides. (3 Minutes) 2. Plunge cut all sides of the opening, starting with the bottom cut. (10 Minutes) 3. Carefully finish corners starting in the center and working to the edge. (14 minutes) The result a mitered opening with little or no patching required. Stitching Hammer Method -150 minutes 1. Score cut the opening with a skill saw and grinder with diamond blades. (8 Minutes) 2. Hammer drill the mitered corners. (8 Minutes) 3. Stitch drill the opening (90 Minutes) 4. Chip the edges of the opening. (14 minutes) 5. Continue chipping the opening with hammer drill (10 minutes) 6. Clean out the opening to fit the skimmer (20 minutes) 7. Grind all surfaces smooth to finish. Note: It is difficult to maintain accurate opening dimensions when using percussive techniques and patching may be required. How to Guide Versus other methods Air Conditioning Installation Concrete Pipe Taps Egress Windows HVAC & Electrical Openings Landscaping Applications Mechanical Openings Air Conditioning Installation Small Openings FREE Ground Freight (Continental U.S.) - Click here for details on our shipping policies.