Using a Machine Sander

Video Transcript

Hi, my name is Kevin and on behalf of Expert Village, I'm going to talk to you a little bit about machine sanding. We have our box here that we've routed with a flush trim bit and we have machine marks left in the piece here and so what we're going to do, we're going to use what's called a random orbital sander to take those out. It?s a machine that this pad here has a piece of sandpaper here and it moves in all different directions so its not just making one continuous mark anywhere. What we're going to do is we're going to use to flush up these two surfaces and get those machine marks out of there. From there, we'll go to hand sanding. With this machine, what's really important is, when you turn it on, to keep it moving at all times. You don't want to rest in one area because it is a machine and it can sand off a whole lot of material very fast. You want to keep it moving, a good slow pace, let it do its job, but also don't keep it in any one area for any long period of time. Also with this machine, and in any sanding machine, it?s really important to wear dust mask to protect yourself from all the particles that are going to be in the air, even though it has a dust collection system on it. When you're taking machine marks out of a piece and also when you're sanding the end grain which is what we have here, you're going to want to start with a coarser grit on the machine. 80 to 100 grit is a good starting point. I've got 100 grit on here and that's what we're going to start with. We're going to flush that up and get that nice and smooth and then we'll do the rest of the piece go over it lightly with this machine sander to get the machine marks from where the piece of sheet good came from the factory.

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