Web1. Slow Down while Sanding. If you’re accustomed to sanding by hand or using a belt sander where you constantly keep things moving, this one can take a bit of a perspective shift to wrap your head around. But – random orbital sanders are designed to be used extremely slowly. Not quite a snail’s pace, but perhaps an ant’s. WebIt's my understanding that the 3/16" orbit should be used for the first sanding (in my case either 100 or 120 grit, depending on the wood, usually 120), followed by the 3/32" orbit in the next grit up (150 or 180). The initial sanding puts such deep swirl marks that the second sanding will not remove them. Air pressure? 90 psi AT THE TOOL.

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WebJan 24, 2001 · An orbital sander should turn at least 10,000 OPM—maybe yours doesn’t. The problem could also be your abrasive. I use silicon carbide because the mineral itself is very sharp—no rounded edges, like some of the other, less expensive abrasives. As silicon carbide heats up and breaks down, it shatters, creating more sharp points. WebApr 21, 2024 · A random orbital sander can leave swirl marks due to poor quality sandpaper, improper technique, or an inability to clear the dust from the surface. If you’ve had trouble with those pesky swirl marks, this article is here to help. If you’re looking to add a little something extra to your backyard or outdoor space, … Check out this great collection of DIY projects and décor ideas for your … It’s always nice to have extra storage space to keep household items more organized. … A DIY full-size loft bed is a great way to save space in a small room. They are … Great collections of Garage DIY project ideas. Printable PDFs are available that … There are many types of screws for different projects. However, there is a … Hey! I'm Viktor. I love to create, design, repurpose, and fix anything that is broken … philipp schuler rothenthurm

Do Orbital Sanders Leave Swirl Marks - Identifying and Avoiding

WebMay 27, 2024 · Orbital Sander – Sometimes, this leaves a round mark on the wood. You can fix this situation by moving to a more coarse grit and sanding it out. Random Orbital Sander – This is similar to the Orbital Sander. The pad moves in “random orbits”. So, there is no distinct scratch pattern on the wood. However, it can still leave marks. WebA sander with a large orbit pattern will be more aggressive and efficient at removing a lot of stock but will leave heavier swirls. A sander with a smaller orbit will be less aggressive … WebJul 23, 2014 · Jointers, planers, belt sanders etc, should leave a finish that allows starting with 100 grit. From there, go to 120 grit and sand until the marks from the prior grit are gone, then move to 150 and finish at 180 grit. Plywood is factory sanded to 180 grit. Therefore, it's best to not sand plywood except with 180 grit and sand by hand. philipp schuler-voith wiki