Hi, I'm Andy. I'm creating the world's most affordable desktop CNC machines

was wondering when you would chime in Jazz

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Originally Posted by komatias

was wondering when you would chime in Jazz

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Well whats to say other than it's funny.? . . . Maybe not so funny if you'd bought it.:sorrow:

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I haven't laughed so much since Grandad unbolted wrong Chandlier. . :hysterical:

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your beginning to show your age now, I saw it first time round.:nightmare:

Is the F in FEA really an abbreviation of Finite, or does it mean something else here?
Is this Mechanical Under-Engineering at it's finitest?
I still think it's a great idea for learning on foam and possibly balsa, if it's significantly cheaper than other inadequately engineered desktop CNC machines it will be less loss when it's passed on cheap or scrapped in favour of something almost competent,

- Nick

;-)

lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.

Sienci - In case it did not make it over there . . .
https://www.youtube.com/watch?v=LFuYIi5-igc

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Originally Posted by dodgygeeza

lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.

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He's done Finite Element Analysis on a computer which tells him it's all good so you must be wrong and I must be wrong for agreeing with you. :hysterical:

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Originally Posted by dodgygeeza

lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.

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What you are seeing is a motor bolted rigidly to the end of a shaft and being allowed to wobble. Much easier than messing with universal joints or isolating it with toothed belts. I have been suggesting it for years so it must be clever :suspicion:

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Originally Posted by JAZZCNC

Well whats to say other than it's funny.? . . . Maybe not so funny if you'd bought it.:sorrow:

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You're on quicksand there Jazz - I bought a MD machine :hororr: (but I've learned a lot since !!!)

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Originally Posted by Robin Hewitt

What you are seeing is a motor bolted rigidly to the end of a shaft and being allowed to wobble. Much easier than messing with universal joints or isolating it with toothed belts. I have been suggesting it for years so it must be clever :suspicion:

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See what a formal engineering education and Finite Element Analysis can do for you?
Sweet Felicity Arkwright it would seem!
There but for the grace of god.............:tennis: