# Step 4: Attaching Tubing to the Actuator

• Use a bamboo skewer to poke a small hole that goes to the inside of the actuator (be very careful when doing this, so that it does not get an additional puncture). The hole should be in the middle a little above where the top and bottom of the actuator meet. When a hole is made, pull out the skewer and insert the non-pointed end into the hole. Turn it around a couple of times to expand the hole diameter.
• Push the end of the PVC tubing into the hole
• Smear SilPoxy glue around the tubing where it enters the actuator. Make sure that the glue forms an airtight seal that fastens the tubing to the actuator. Let the glue dry for 12 minutes