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

[magicniner]

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

;-)

[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.

[magicniner]

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.

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.

[Robin Hewitt]

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.

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

[magicniner]

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

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.............

[Robin Hewitt]

See what a formal engineering education and Finite Element Analysis can do for you?
Sweet Felicity Arkwright it would seem!

Note to self: Takka takka takka

[JAZZCNC]

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

Ye real cleaver.!!! . . The Drives will love dealing with all the resonance banging thru that motor...

[cropwell]

Here's one from a few years ago - at a Pneumatics Suppliers Counter in Nottingham.

Me: Can I have one of those XYZ-123/B, like the one that's on the shelf over there.
Jobsworth: I'll just look it up on the computer. Sorry mate we haven't got any, computer says zero stock.
Me: What about that one there!
Jobsworth: If the computer says we 'aven't got any, we aven't got any.

Cheers,
Rob

[magicniner]

Jobsworth: If the computer says we 'aven't got any, we aven't got any

I bet he was an engineering graduate just waiting for that big design contract to drop in his lap ;-)

[komatias]

I bet he was an engineering graduate just waiting for that big design contract to drop in his lap ;-)

Not all of us graduates are waiting for contracts whatever the sun and mirror lead you to beleive