Field cutting is simple and can be accomplished with a circular power saw with an abrasive cut-off wheel (masonry type) or hack saw (24 to 32 teeth per inch). Drill fiberglass as you would drill hard wood. How to cut Oglaend System Support Channels, Cable Ladders and Cable Trays. Oglaend System manufacture and deliver Multidiscipline modular bolted support systems, cable trays, cable ladders and accessories for complete installation and containment of Instrument, Electrical, Telecom, HVAC and Piping. Creating a 90-degree elbow in an electrical cable tray, often called a "fabricated" or "mitered" bend, involves cutting, bending, and fastening a straight section of tray. The most common method involves creating two 45-degree cuts to form a 90-degree angle. Any surface that has been drilled, cut, sanded. The method for producing bridge bend elbows is as follows: Take a 90-degree cable tray bend elbow as an example, and apply the same principles for 45-degree bends accordingly. The length of the bottom side (bottom diagonal) after bending the cable tray should be equal to the width of the cable. -piece tray istypically used in applications where visual esthetics are important. It is available with a ventilated or solid bottom. For the best results, use a WB30BC Angular Blade Offset Bolt Cutter with 24" (600 mm) long handles.