It takes a little time to set it up. As someone else has mentioned in the reviews, the degree indicator is not accurate. I adjust it by eye every time. Always close to 30 degrees, a little to the left or right. If you have experience with how the sharpening angle should be, you will manage. It's not suitable for a novice, but no novice operates a chainsaw. Overall, it is a very good tool. It does its job. However, you need to work with it empirically without relying on its dial. It is worth the money. On the positive side, it doesn't make noise. I was pleasantly surprised in this regard.

Used a friends sharpener (the same model) and was so impressed I have bought my own, and i'm very pleased I did, its like a new blade every time A++++

My chains became even better than new ones. The few money I spent paid off with the first ride.

For its price, it is good, don't expect too much. The instruction manual is useless, to sharpen it correctly you have to set it at 27° on one side and 35° on the other. Normally it should be at 30° (for this specific chain). Maybe mine was defective. Because I have worked with the following chainsaw (from a colleague), I recommend it for anyone interested. (https://www.skroutz.gr/s/42337260/Nakayama-ES3010-Ilektriko-Trochistiko-220W.html). You don't need to get this specific one, there are similar (copy) ones with a different brand. They are all manufactured in the same factory.

Having gone to the local store of a major company representative and after 3 sharpenings the chain needed replacement, I decided to buy it. I adjusted it easily and now I am on the 7th sharpening and the chain is razor sharp and still has bread. It definitely saved me a lot of effort

It sharpens perfectly. You turn it once to the right at 30 degrees, you sharpen one tooth at a time, and then you turn it to the left at 30 degrees and sharpen the rest. Be careful for the teeth to be sharpened at the same time.

If you work intensively and daily in fields and prune and need to sharpen your chain, I believe that from the first year you will immediately see the return on investment!!! Very good tool!!!!

VFM does what it should! After about 1 year, I noticed that the manicure stone wasn't doing much, so I replaced it with a higher quality one and the tool went to another level

Excellent for its price!
Just be careful with each link as it needs adjustment in the depth of the grinding, as you lower it, it finds the links that should not be ground.
Also, check the guides after each grinding if they need to be "lowered" with a flat file.
A simple or electronic caliper will be very useful to keep the teeth at a relatively equal length.
Personally, the clearance I give between the teeth is 0.3-0.4 mm.

3/11/2022
After using the grinder for a while, I changed the side of the grinding disc, the difference in grinding is noticeable because the disc had worn out and made the grinding more round (photo 1) rather than angular as it initially was with a more squared stone (photo 2).

Also, a stone of good quality will definitely be better than the cheap one.

Today is the first day and I sharpened 5 chains. They cut better than new ones.
Very easy to use. It's worth its money!

From filing with the file, you do your job much better. And that's because electric sharpeners apply the same degrees of sharpening symmetrically to all teeth. It does a perfect job if you make the right adjustments. Basic adjustment requirements apart from degrees [30] are the depth of tooth sharpening and how much we will sharpen each one. It needs to touch them gently to avoid burning our chain [reducing it] but also to gently stroke them to acquire the appropriate sharpness. The light it has helps somewhat in the visibility of the sharpening. I sharpen equally well a 3/8 and 0.325 chain. One advantage that we usually do not find in professional sharpeners is the automatic tensioner it has. So, a hobbyist sharpener that does an impeccable job and other professionals would envy. It lives up to its cost and I highly recommend it!!!.

The product is good for a small chainsaw.
The disc has dimensions of 108 diameter × 3.2mm thickness × 22.2 (3) inner center hole.
It can also accommodate a 4.5mm disc.
I didn't use it because I have a large chainsaw with a 3/8 - 1.5mm chain and it wouldn't fit a disc type 145 × 4.7mm × 22.2 (3).

It does its job just fine.... I bought it for the price listed, and later realized that it is available in a department store with a different brand and color (blue) and much cheaper. Therefore, I consider the product effective, but expensive (at the listed price). If you get it at the low price, it's a solid "5-star".

Very good machine. I have been using it for about half a year and it hasn't given me any problems. Very good

The machine is excellent. With the correct adjustments, you can make the chain new and have much better traction than what various shops do for you. It has automatic tensioning, at the moment you lower the disc to rotate, it automatically secures the chain, and a light to accurately see the traction. I recommend it!