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  1. #1
    Lovely inlay in that end grain chopping board, Pilsbury. As Kitwin says also a pretty good test of the machine too. What sort of feeds and speeds did you try?

    My workshop is brick, with concrete floor, though overlayed with polystyrene, chipboard and lino flooring. Think I will see how it fairs on a bench (something like this) before lifting floors or bolting to wall. ( No mine will not come with the stand)

    Thanks for sharing
    Andrew

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  3. #2
    Quote Originally Posted by Andrewg View Post
    Lovely inlay in that end grain chopping board, Pilsbury. As Kitwin says also a pretty good test of the machine too. What sort of feeds and speeds did you try?

    My workshop is brick, with concrete floor, though overlayed with polystyrene, chipboard and lino flooring. Think I will see how it fairs on a bench (something like this) before lifting floors or bolting to wall. ( No mine will not come with the stand)

    Thanks for sharing
    Andrew
    The 3mm EM I ran at 18000rpm and 3000mm/min. 3mm deep cut. Seemed to sound fine to me. But really I have no clue what I’m listening for��. The 15^v bit again 3mm cut and 18000rpm but lowered to 2000mm/minute. Absolutely zero method to my madness!

    I hate to poop on your parade, but in my limited opinion, that bench won’t cut it unless you brace the hell out of it. This thing shifts it’s weight around something chronic!

  4. #3
    Quote Originally Posted by Pilsbury View Post
    I hate to poop on your parade, but in my limited opinion, that bench won’t cut it unless you brace the hell out of it. This thing shifts it’s weight around something chronic!
    I was minded to say something similar about the bench.

    All this discusion of machines jerking around reminded me (as I briefly mentioned above) of the so-called "s-curve" trajectory planning that uses varying as opposed to fixed acceleration rates. The G2Core software (which will run on an Arduino DUE board) from Synthetos includes this and I had a look at using it a few years ago but didn't persue it. For anyone interested there's an explanation on the G2Core wiki at the address below. Presumably this sort of control is implemented in some of the more expensive software but is not yet used in LinuxCNC, MACH3 or UCCNC as far as I can tell from a search on various forums. UGS will drive G2Core but only via USB I think.

    https://github.com/synthetos/g2/wiki...tion-Explained
    Last edited by Kitwn; 12-02-2021 at 02:48 AM.
    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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