This video is about machining a vacuum pad. So let's begin. With this part we have the classic issue that we need to machine from five sides. And I will start with the mounting holes here. So we can use them later to machine the outside. So we start with drill, helical drill and the three point function. First create the large hole for the screw head. Let's make it 16mm deep. Then create a ceiling surface, 1.4mm deep and starting at the bottom of the previous hole. And finally drill completely through, 6mm and started 16. So total depth of 22mm. We need this a second time. We can do this just with a stem function. And we are ready. Before machining, I make sure the holes will hit the slots of my T slot table. And also make sure that there are slot nuts at the right positions. The coordinates are easy to find with the middle mouse button. And can be entered in the controller command line. Now we can clamp the part with the holes we just drilled and remove the stem clamps on the outside. The material is not perfectly flat, so I just milled it down to 20mm. The bottom is also machined to be perfectly flat. It's just not shown in the video. The next step is to machine the main pocket. Then the hole for the air inlet. And the outside. And we need to make sure not to cut into the T slot table. So we use a little bit less than 20mm. Now we change the tool to a 3mm end mill. And create the slot for the large O ring. The bar at the bottom is removed with a router. So let's test it. As you can see, I can move the whole machine around with it. The pump I'm using here is a rotary vain pump. I got it from eBay for about 110$. They are relatively silent and create almost complete vacuum. Don't worry about the smoke, it's just water vapor. Vacuum cleaners were comparison only achieved 20 to 30% vacuum, so the clamping forces of the rotary vain pump are 3 to 5 times higher. But I also have two disadvantages. They are easy to clog or damage if you suck dust and chips into the pump. And I do not tolerate much leakage before the vacuum breaks down significantly. So it is very strong and silent, but applications are limited to cases where you do not create leakages during machining. To protect the pump from dust and chips, I've made a cheap filter from sewage pipes and added a few wells to connect my vacuum pads. Make sure to use 3 to 2 way wells as regular wells will not release the vacuum after shutting off. The last thing I like to show you in this video is how the center of the lid can easily be found for machining. Select setup workpiece, touch or sender. Then just touch or 3 random points around the pot. It really doesn't matter where those points are, just make sure they are somewhat equally distributed. Thanks for watching!