A sanding project is more than a choice between two tool bodies. It includes the material, the existing finish, the result you want, how the piece will be supported and how dust will be managed. Working through those questions first makes a sander comparison much more useful.
Begin with a modest, identified task, such as preparing a piece of new unfinished timber for a finish specified by its supplier. If you do not know what an old coating or material contains, stop the equipment-shopping exercise and find out what assessment is appropriate before disturbing it.
Identify the surface and the result
Write down the material and whether you are changing a finish, preparing new stock or addressing a defect. A deep scratch, an uneven assembly and a cosmetic colour change are not automatically the same sanding job. A thin veneer also needs a different discussion from a thick piece of solid timber.
Ask the material or finish supplier which preparation system applies. Keep those instructions with the project. Avoid choosing an abrasive sequence from a generic example and assuming it is suitable for every surface. A sample made from the actual material is a better place to resolve a finishing question than the most visible part of the completed piece.
Compare the controls you will use
On a shortlist of random-orbit sanders, compare grip shape, switch position, speed adjustment, abrasive size and attachment system. A front handle may suit one way of supporting a piece, while a compact palm format may suit another. Published speed ranges describe the controls available; they do not establish that one sander will produce a better finish in your hands.
Check how the dust port connects to the collection equipment you intend to use. Write down the required adapter and hose details. An included dust box or bag does not mean the whole workspace will be dust-free, and a connection that looks close in a photograph may not fit your hose.
Put the rest of the setup on the list
Include compatible abrasives, a suitable way to secure the work, the manufacturer’s protective requirements and cleanup supplies. Plan the cable and hose route so they do not pull across the work or obstruct your movement. Keep the work area separate from household activity and follow the product instructions for the material involved.
If the project includes coating removal, the material assessment comes first. The EPA provides guidance for lead-safe work in US homes built before 1978. Unknown old paint should not become an ordinary sanding exercise because a new tool has a dust attachment. The right outcome may be a different process or qualified help.
Make a sample and keep its history
Label a spare piece with the material, preparation steps actually used, finish product and date. Let it reach the stage specified by the finish instructions before judging it. Compare it under the lighting where the finished object will be used, rather than relying on a wet sample or a phone photograph alone.
Keep the result with your materials board. If you repeat the project later, you will have more than a vague memory of “the medium paper and the natural finish”. Store the exact product and abrasive information, along with any question that remains unresolved.
The purchase decision then becomes focused: which tool supports this preparation process, with accessories and dust arrangements you can actually use? That is a more dependable starting point than buying the model with the highest speed headline and deciding what to sand afterwards.
Open Project Toolkit to organise your own inputs and keep an editable project.