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Now we can get into the fun stuff.
The first thing you’ll want to do is measure the room you plan on working in. This might seem backwards, but you won’t be able to use an exceptionally long drywall sander in a room that it’s too big to fit into.
Try to leave yourself several feet on each side. In hallways, this isn’t going to be quite as important since you generally won’t have trouble working along the length of it but if there’s only a short passage after a corner you’re going to want to check the length.
You can, of course, always step into the room after the corner and use the sander from there, but this will open the room to the dust generated.
After you’ve made sure you can work in the room, check the speed of the sander. Most will be variable speed, and this is important if you’re looking to minimize clean up afterwards. Use the lower setting to finish up, and the higher setting to “cut” when there’s still ridges.
Lower settings will cut slower, which means you’ll be able to avoid cutting through the tape as long as you’re careful.
The weight is also an important factor, go as light as you can while meeting the rest of your needs. The job will be done much quicker with an electric sander, but it’s still going to take a good amount of time and wielding a heavy sander will get old fast.
Surprisingly, how hard you on tools will effect how durable of a sander you’ll need more than the job itself. It’s fairly “light-duty” work as far as the tool itself is concerned but some people are just hard on tools.
If that’s you, make sure you have one that’s a bit tougher than most of the others on the market in order to ensure it lasts.
Lastly, check to make sure you can adapt your vacuum to the sander and that the length is suitable. If you have a lightweight shop vacuum you should be able to drag it along with the sander as you go, but a longer hose will keep you from being tethered to just one spot.
Keep the above in mind before making your purchase, and you’ll end up with something that will help you more than you can imagine when it comes to the final stages of your drywall project.