Re: Problems
Posté : 15 août 2017 23:23
It's normal if your settings are different between X and Y.
Actually, the M8 leadscrew in X is a small mistake on this machine. You can't accelerate and go fast enough with that. The X axis limits the whole machine.
That's why I quickly made this upgrade (using ACME leadscrew with 8mm lead -> you can put same acceleration and feedrate than Y):
https://www.thingiverse.com/thing:2417296
(don't look at my Marlin's settings in thingiverse: I use ACME leascrew 8mm in X, ACME lead 2mm and 32 microsteps in Z. So my R-CNC goes minimum 10 times faster than yours, with better accelerations: https://www.youtube.com/watch?v=nNKhC2bFKA8 )
Romain is actually drawing an upgrade to put the same system (GT2 belt with 60teeth pulley etc) than Y. He's working on it at this moment!
It's the best choice to use GT2 belt 10mm on both axis, because as you can see, we need the same speed & acceleration on both axis.
If you want that Y go slower, just change your settings in Marlin (same values than X). And it's better to do that, because otherwise your spindle won't be happy to cut fast in one direction and slowly in the other.
Copy/Paste your Marlin settings here if you're not sure of what you're doing.
Take a look at the other remixes of the machine (the Z nut is cheap and you can gain some speed, the external waste board adjustement is usefull):
https://www.thingiverse.com/thing:2159840/#remixes
Actually, the M8 leadscrew in X is a small mistake on this machine. You can't accelerate and go fast enough with that. The X axis limits the whole machine.
That's why I quickly made this upgrade (using ACME leadscrew with 8mm lead -> you can put same acceleration and feedrate than Y):
https://www.thingiverse.com/thing:2417296
(don't look at my Marlin's settings in thingiverse: I use ACME leascrew 8mm in X, ACME lead 2mm and 32 microsteps in Z. So my R-CNC goes minimum 10 times faster than yours, with better accelerations: https://www.youtube.com/watch?v=nNKhC2bFKA8 )
Romain is actually drawing an upgrade to put the same system (GT2 belt with 60teeth pulley etc) than Y. He's working on it at this moment!
It's the best choice to use GT2 belt 10mm on both axis, because as you can see, we need the same speed & acceleration on both axis.
If you want that Y go slower, just change your settings in Marlin (same values than X). And it's better to do that, because otherwise your spindle won't be happy to cut fast in one direction and slowly in the other.
Copy/Paste your Marlin settings here if you're not sure of what you're doing.
Take a look at the other remixes of the machine (the Z nut is cheap and you can gain some speed, the external waste board adjustement is usefull):
https://www.thingiverse.com/thing:2159840/#remixes