The Festool ETS 150/5 is a well-built and versatile palm sander, which is precise and powerful at the same time. It is suitable for those who like to use the same tool throughout the complete project, from the first raw cuts to the final surface finishing.
It can be used effectively during all stages of a sanding project, due to having a good compromise between sanding power and surface finish. With it, you can relatively efficiently remove a large volume of material, and then reach an acceptable surface finish. For example, within 10 -15 minutes, this tool can sand an old 36" x 48" hardwood dining table to a surface finish level that's good enough to apply the first level of varnish.
Pro The vibrations are barely noticeable
Festool palm sanders are well known for their state-of-art vibration damping systems. The manufacturer uses pre-calculated counterweights on the motor shaft to make this tool perfectly balanced for its 6" sanding disks. Build quality also factors into vibration damping, as this sander is made from large, cast plastic parts, which are less prone to vibrations. As a result, the tool vibrates so unnoticeably that you only need one hand to operate it.
Pro Multiple dust extraction options
This tool offers you two ways of extracting the dust from the workpiece.
First, you can use a vacuum unit, compatible with the tool's 27mm dust extraction port. While the vacuum units from Festool are very pricey (starting at $510), more affordable third-party vacuum units can be used.
Another option is to use a dust collection bag, which is provided with the tool. However, keep in mind that the manufacturer recommends using the bag only occasionally. For example, while working in tight spaces.
Pro Wide speed range lets you set any speed you need
You can adjust the speed of this palm sander according to the needs of your project. It ranges between 4000 and 10000 OPM (Orbits Per Minute). Slower speeds are great for sanding with rough sandpaper, while faster ones can result in better surface finishes when used with more delicate sanding pads.
Con Worse surface finish than a sheet sander can offer
No matter how good and expensive a random orbit sander is, in terms of surface finish it will always lose to a lower quality sheet sander. If exceptional surface finish is something you are looking for, consider investing in a sheet sander instead.