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  1. #11
    Quote Originally Posted by Pilsbury View Post
    He should have tried my concrete feet idea! Anyhow, apart from the usual bit holder, colett holder, box etc, here is my first proper effort. Lots of learning points to get me moving from acceptable to perfection but I’m now on the journey!

    Click image for larger version. 

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    I'll add a 'Wow!' of my own, that's brilliant. I know the Aztec calendar is a popular test but it's the ability to cut out pieces like this that will fit together properly that really tests the accuracy of your machine's geometry. I'm hoping my own contraption will perform reasonably well in this respect once I finish putting it back together.

    Re the vibration: it's the accelerations that cause the trouble (apart from shoving sheets of MDF through doors, of course). Different control software has different properties re how much 'jerk' you get, something to do with how many derivatives of the rate-of-change of direction you put in the maths. I was never that hot on calculus. Reducing accleration settings will reduce the gyrations but slow down your cutting of complex shapes.
    An optimist says the glass is half full, a pessimist says the glass is half empty, an engineer says you're using the wrong sized glass.

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