Step 4: Install vented screw

Prepare actuator and screw

Pierce the actuator end using a thin rod and push it through until it’s sticking out the far end of the actuator.

Place the hex screwdriver in a vise, pointing upwards. Place the vented screw and small laser cut washer on the tip of the hex screwdriver.

Insert screw

Push the piercing rod into the hole at the end of the vented screw. Using the rod to guide the screw into place, slide the actuator down over the entire assembly until the screw comes through the hole at the far end.

If there is a lot of resistance, the screw has probably lost contact with the guide rod and is trying to puncture the wrong location – retract the assembly and try again.

Place the other laser cut washer over the screw, adding some more glue between the actuator end and the washer. Finally, add the nut and hand-tighten it.

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Remove the actuator from the vise assembly and tighten the nut further using pliers. Do not over-tighten as the end cap will start to compress and bulge.

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Paint the washer and actuator end with a thin layer of silicone glue. Leave it to cure.