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for 4m rails have a look at Hilaldam sliding door systems (or similar). for motion, Clearpath servos if you want speed, otherwise high power...
What Uno do you have? is it a genuine Arduino or is it a cheap copy ? you can tell them apart, the genuine has a Atmel 16u2 chip next to the USB...
yes, it can mill, yes, generic Gcode is what it likes. you can generate the gcode with Sketchup+SketchUcam plugin, or Fusion, or Vectric Aspire,...
10mm/min is TOO SLOW for GRBL, it just cannot reliably pulse that slow 0.9i - Min feedrate appears to be around 40-45mm/min · Issue #742 ·...
in GRBL-panel when you click the big '0' buttons to the right of the X Y and Z displays, it sets the active offsets. you can see the current...
'feature creep' is the enemy! dub it V1 and ship it, add more cool for V2 (-:
Here is a handy calculator for doing the basic GRBL settings GRBL settings calculator After that the movement should be very close to correct,...
You have calibrated it, right? HOWTO Calibrate your CNC Machine for MACH3 or GRBL The leadscrew should be pretty close to 0.01mm per step or a...
no, it won't prevent the user making mistakes (-: it MIGHT prevent the collet hitting the spoiler, but only if you can adjust the position of...
You need to calibrate, there is a resource for this HOWTO Calibrate your CNC Machine for MACH3 or GRBL
if you move your machine to the back, right corner, move the Z to tthe top, and then turn on (or reset GRBL), that is the same as homing. if you...
There is a lot of software that can rotate a bitmap for you, so you can rotate it before you import it. I use this IrfanView - Official Homepage -...
by the way, why run 0.8 when 1.1 is much much much better? Releases · gnea/grbl · GitHub
No, GRBL cannot do this by itself. Some GUI's can do it for you, try bCNC but you can also just rotate the part in your CAD/CAM software then...
The standard for homing is the top right corner, so that the whole of the work surface is 'negative'. This is what GRBL expects unless you mess...
put a pulldown resistor on the PWM pin (between the pin and GND) during boot the Arduino pins go into a 'tristate' mode where the state is...
The problem is in the Fusion settings, you have set a lead-in and lead-out where you actually need a ramp. the leadin would work if the bit was...
I think you need an OX OpenBuilds OX CNC Machine
yeah, for a slot like that you do not want a 'horizontal lead in', obviously turn lead in off but, do try the 'ramp' feature, especially in hard...
oh, ok. The Gcode is in millimeters. if you have, somehow, forced GRBL to stay in inch mode, then the first X move is to 25 INCHES, which may be...