A The tools are scissors, calipers, blade, Luer slip syringe, 30-gauge needle, irrigating cannula, and needle-nose pliers. B Measuring the needle’s full length, including the part embedded in the needle’s plastic. C Preparing the plastic stopper by measuring 2.5 mm (less than 1 mm for the needle, and 1.5 mm was added because of the additional thickness of the rubber seal). D Cutting the syringe with a blade according to the measurements. E Preparing the stopper’s rubber part by using scissors to remove the rubber seal’s ramifications. F Installing the rubber on the prepared plastic Luer slip. G Using the needle nose to straighten the irrigating cannula. H Implanting the irrigating cannula in the rubber seal through the rubber ring. I Using the irrigating cannula as a guide to putting the 30-gauge needle out of the rubber seal. J Fixing the plastic Luer slip to the plastic part of the 30-gauge needle.