As you know, a plate joiner is a power tool with perpendicular grooves so you can make the perfect cut. The difficult and dangerous method of cutting accurately is to use a router to cut the grooves of your wood. The plate joiner makes doing this so much easier and safer - it locks in your wood while you cut so that you get a clean, precise cut every single time. The blades rotate in high speeds so that you won't get any resistance or make accidental cuts.

What Kind of Plate Joiner You Need?
Every workshop need plate joiners that can handle all kinds of jobs and last for years. If you're a professional or hobbyist looking for a plate joiner, you know there are many things to consider. You want to look for the rotating speed, the measurements, the blade, and what kind of features the plate joiner offers. Here are some questions to ask before buying a plate joiner.
Features
What kind of features does it have? Some plate joiners are very simple and can get the everyday job done. However, if you work in the shop a lot, you're going to come across many different projects that require different cuts. Some joiners allow cutting at 45 degree angles, some allow you to cut grooves into the edges, and some have more safety features. You really have to consider what kind you're looking for.
Power
How powerful is the tool? When it comes to power, you have to look at the RPM and the motor. The faster the rotation, the cleaner cut you will get. You will also need a motor that you can use for an extended period of time. Higher amp motors will give you better power handling and accuracy. It will support the blade and give you a better cut with less resistance.
Extras
Are there any extras? Does the joiner come with a good storage case, a clean output (meaning the wood, cuts, and shavings aren't scattered everywhere when you are done), and is there. Look at the extras that your purchase may come with. These features or bonuses will not really factor into the functionality of the tool but if you're looking for a nice storage case (as an example), it will definitely affect your decision. Plate joiners are priced anywhere from $100-$300. The price you pay will depend on the reputation of the manufacturer, the features, and the power of the tool.
Plate Joiner Reviews
By reading the reviews of plate joiners on various shopping sites, you can find what you are looking for. It's important to figure out what kind projects the reviewer has worked on to see if that person's review is applicable to you. For example, a reviewer that needs a straightforward plate joiner will rate ordinary products high but if you're a professional, you may need other features that are not talked about in the reviews. The ratings alone will not tell the whole story so you have to research various models carefully to make an informed buying decision.