Where sheet numbers are not used drawing numbers are usually in sequence, for example 1010, 1011, 1012, etc. '-----Size. This is the size of the original sheet that the drawing was drawn on. It is not necessarily the size of the sheet you are looking at because you may be looking at a coPy that has been reduced or expanded. Scale. Plexiglass drills are designed with a 60° drill point specifically for drilling plastics and laminates. Available in Frictional sizes 1/8”, 5/32”, 3/16”, and 1/4 “. All tools are jobber length with a straight shank. Plexiglass drills are the solution to plastic and laminate drilling problems. What is acetal Delrin homopolymer vs acetal copolymer? Acetal plastic has low coefficient of friction, high strength and excellent wear properties. Research Acetal mechanical properties at Curbell Plastics. The length of roof sheet that can used is only governed by the transport available from the factory. Roof sheeting fixing - String line to set sheet overhang at the fascia. To start off laying the sheets decide the amount of overhang that the iron will have at the fascia. Oct 04, 2019 · Step 1, Cut the panels to the length. Most panels come up to 32 feet (9.8 m) in length. Allow for a minimum of 18 inches (45.7 cm) if you need to lap to complete the run. Cutting tools: Angle grinder: The fastest option. Wear hearing and eye protection. Paint or prime cut edges to prevent rust. Circular saw: Slower than angle grinder, but follow same instructions. Use a metal blade and expect ...Step 2, Pre-drill holes on the ridges. Some panels have pre-drilled holes. If yours do not ... Custom Sheet Metal Fabrication. Learn More . Custom Painted Aluminum. Learn More . ENDUREX™ 555 HIGH IMPACT HURRICANE PANEL. Learn More . ENDUREX™ 500 SERIES.