Hi guys I’ve watched the build video for the V-Slot belt driven linear actuator (link at bottom of this post). I think the principle is perfect for my application, which is to automate a sliding door, but I have some questions whether it is strong enough and wondering if there are additional components that could be used to modify to suit better. Any help much appreciated: 1. My sliding door is mounted on an independent track which takes the whole weight of approx 100Kg so I can move it with my little finger once it’s moving, but it does need a little more force to get it started. I’m wondering if the belt and/or motor in the video would be strong enough or if there is a larger version. 2. I want the door to move real slow. Say 3cm per second. Is there a gearbox that can be used with the motor to reduce speed? 3. I need to make sure that if the door jams against something (eg the cat!) and when it reaches the end stops that the motor switches off based on a torque switch. Is a component available to do this? Perhaps limit switches are better for the end stops? 4. I need the track to be 14m long. Can sections be joined together? And would this length give problems with belt stretch? Help on these questions much appreciated.