hi Jazz

Originally Posted by george ukhi jazz

I was suggesting options for 4ft by 4ft table, up to a full size table, and just trying to give him a general idea. . If you read my post, i had suggested that, i also said i did not know enough about R&P.



Exactly so best not to suggest anything.!! . . . There's a saying . . "Better to remain silent and be thought a fool than to open ones mouth and remove all doubt" . . . . . Not 100% relavent or possibly fair but I do like it. .Lol
Honestly mate, with that attitude, we never would have walked out of the cave. Jazz i do respect your advice and have read through loads of your posts and advice to other people and assimilated lots into my own design, but, you can not consider people fools becuase you consider them wrong, I think you have just misread what i have been trying to explain to the bloke. They do say " fools rush in "

Dangerous Dave - am trying to suggest this to you

1. You can not go cheap on the motors and electrics, Decide on a frame size, gantry style, then let that choose for you
2. Machines above 4f are a lot harder, whereas, the machine i pointed to, and suggested, Is probley a good all round starting point. there art a few things you could make cheeper, like the bed, single baerings. You could even try find the bed at the scrappy, and mount and true the top like He shows in his thread.


Originally Posted by george uk
If price was not an issue from him, i would say 25mm rails and screws and servoes



And again you'd be wrong because servo's are not always better, The rails most likely over sized and screws wrong selection for this size machine without special considerations.
Again, you dont seem to have read the post, i said that because you was assuming on the previous post that i had ment the smaller screws and motors for a full size machine, and i was trying to emphasise that his main consideration is costs, Also, if a persons not able to engineer the machine fully, then upping the rail sizes and screw, is one way to get over that.

"Better to remain silent and be thought a fool than to open ones mouth and remove all doubt""Better to remain silent and be thought a fool than to open ones mouth and remove all doubt"
Barnes Wallace, Brunel , mary bell, Copernicus, Galileo, Bor, --- a long line of people that was considered fools,