I recently purchased an OLFA circle cutter (CMP-1 model) for making my own hiking stoves from drink cans. It’s an incredibly useful little tool that I’ve ended up using for lots of other DIY/hobby jobs. It works in a similar way to a traditional compass, but it has 90 degree arms, which means the cutting blade sits at the perfect angle for cutting. If you’re into any kind of modelling, small scale DIY, or craft, then you should have one of these in your toolbox.
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