We have a few box balls (i.e. box shaped into spheres) and I always detest trimming them. I put off buying an Isio for a year because I only have to trim them a few times a year - does that justify another tool?
Oh yes. The Isio makes a job I loathe so much easier.
1. Shrub shear attachment (the long blade): This trims well. It won't cut into heavy growth, which is a disadvantage for some but an advantage for me - it'll cut the excess shoots but won't cut into the main body. As trimming too far is something I want to avoid, that's great - when the blade hits the body of the box rather than the shoots I am trying to cut off, it bounces off it (bear in mind that I am cutting at a tangent to the ball, not into it at an acute angle - do the latter and maybe it'll cut into it).
The Isio is to hedge trimmers what the Black & Decker Mouse is to sanders - it's for fine work. If you want to trim a hedge, buy a hedge trimmer. If you want to trim a cone/spiral/ball-shaped box plant, it's ideal.
2. Edging blade attachment: I didn't want this but am so pleased I got it. It's not just for edging the lawn - I used to hate trimming round the trees on our lawn. I used to hold the grass in one hand, shears between my knees & cut one-handed - a pain in the neck. Now I just walk around the tree - it takes three seconds.
The edging blade is an accident waiting to happen - it is far sharper than I had expected. I reckon it'd take your fingertip off without any difficulty. That's not a problem.
There are (apparently) two versions of the Isio - one with silver blades, and one with black & silver blades. The former appears to be an older model and is cheaper (well, on Amazon it is currently more expensive, but it is cheaper elsewhere).
There is a long handle accessory, for using the edging blade without having to kneel. It works with both models. I nearly bought it but am pleased I didn't - I'm young and have no problem using the Isio while kneeling. If your garden is large or if you are elderly you might want to buy the handle. If in doubt, I suggest you don't buy it and see how you go.
Battery: the instructions state that it takes 5 hours to charge, and will run for 40 minutes.
Note:
- This is the older model of the two Isios (as far as I can tell). I believe the newer version is slightly lighter and charges faster (but then I'm suspicious of fast chargers - not good for the battery(?)).
- Be aware that some cheaper versions of the Isio are cheaper because they only contain one of the two tools.
One thing I like - I'd finished, packed up & then noticed a bit I'd missed. You don't need to get the extension lead out again - just grab the Isio & trim. I found myself looking for things to trim.
OK, kids, time for a haircut!
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