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When I fist got this, I struggled. I was trying to cut a circle in mount board in one swoop. This causes it to tear, jolt and cause an awful finish.
After doing research, I found that the circle should be created gradually and over a few rotations. This works much better and the finish is perfect.
It is quite fiddly and takes a while to really feel at home with it, but it really is simple to use once you know what you are doing. It comes with a spare blade which is handy and it has a protector to cover the blade when not it use.
It only loses 1 start because the 'handle' is quite small and holding it between my finger and thumb is quite awkward. This aside, brilliant product, I recommend it.
Reading some of the reviews I knew there will be a knack to using this cutter. It is fairly hard to use. The lack of numbering on the measures makes it inefficient. The knack to use is when cutting paper turn the paper instead of turning the cutter. It does require some pressure or weight as do most blades, no matter how sharp they are, but there is little weight in the cutter so you have try guess the weight and pressure to use efficiently. There is a small circular disk that in application keeps the centre point stable and protects the paper, provide it faces in the correct direction. There is no instructions supplied but they would probably be in Japanese anyway. It will only score cardboard and heavier material. If you are not using on paper don't bother purchasing. 150mm is the max diameter. It is what it is worth the price perhaps not! A scissors will do a better decent job. Might be better off making one with a piece of wood, a nail a screw and a stanley blade!
Wow! This thing works better than I was expecting! It's great at cutting perfect circles through paper or thin card. The cutting blade is exceptionally sharp. It comes with spare blades and a rubber disc for when you don't want to put a hole through the middle of the circle you are cutting. These are conveniently stored in a plastic guard.
I've given this product 4 stars because I am disappointed that there is no accurate way to measure the radius of the circle you plan to cut. Instead you need to use your own rules to measure the distance from the pivot point to blade.
I purchased the circle cutter to cut the wheel well out of my rc car body shell. It was simple to use and to ensure a neat cut through the polycarbonate I had to do light repeated cuts with the compass cutter until I could simply pull the cut out from the body shell. Had I tried to cut through the shell in one sweep I fear I may have torn or ripped the plastic..
Only slight issue is that the rubber stability disk that comes with this has an x engraved into it to identify the middle of where you want your compass point to be.. mine however was off center. it didn't affect my use of this tool but it may yours so just a heads up.
so cheap .. choice of blades.. stable and sharp enough to cut through my rc car body (polycarbonate) with ease and gave a really neat finish.
I was dubious at first but it is a sturdy thing. It does take some practice to get used to, so may not be suitable for children. I only used it on card and regular paper as it did not cut tissue paper so well. But overall I have been very happy with it.
I used it to cut out circular card frames for tissue paper rose windows.
A tool for cutting circles, which works but needs practice. Much easier than cutting freehand it will cut from small circles to large, but I found it fiddly and it moved a lot. However I really think it was me expecting a gadget which cut circles by itself, would be excellent if you had lots of circles to cut and had patience!