Ontopic The 3D printing thread

gee

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Sep 29, 2012
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I'd trust the thermistor in the hotend over your IR thermometer.

If the hot end is measuring 175, can you manually feed plastic into the printer, or at least can you rub a bit of filament across the nozzle and see it melt?
 

Mr. Asa

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I didn't get any oozing earlier. I did just play around with it and was able to manually crank it up two or three degrees at a time. When I set it to 200 it was reading 197 even after letting it sit for a bit.
 

Mr. Asa

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@Jehannum

Did you set the BLTouch to the left or right of the extruder (when looking at it from the front)? I am digging through the firmware for the offset, but I think its setup for the left when I've got it mounted on the right.
 

Jehannum

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@Jehannum

Did you set the BLTouch to the left or right of the extruder (when looking at it from the front)? I am digging through the firmware for the offset, but I think its setup for the left when I've got it mounted on the right.
From the front, mine is to the right and behind the nozzle.
20191120_213643.jpg

Code:
//================================================================================
// IF YOU HAVE A CUSTOM PROBE MOUNT OR ONE THAT IS NOT PRE-SUPPORTED UNCOMMENT THE
// CUSTOM_PROBE OPTION IN YOUR PRINTER SECTION AND ENTER YOUR PROBE LOCATION BELOW
//================================================================================

#if ENABLED(CUSTOM_PROBE)
  /**
  * Z Probe to nozzle (X,Y) offset, relative to (0, 0).
  *
  * In the following example the X and Y offsets are both positive:
  *
  *   #define NOZZLE_TO_PROBE_OFFSET { 10, 10, 0 }
  *
  *     +-- BACK ---+
  *     |           |
  *   L |    (+) P  | R <-- probe (20,20)
  *   E |           | I
  *   F | (-) N (+) | G <-- nozzle (10,10)
  *   T |           | H
  *     |    (-)    | T
  *     |           |
  *     O-- FRONT --+
  *   (0,0)
  *
  * Specify a Probe position as { X, Y, Z }
  * Do NOT enter an number for the Z position in here. Store your offset in EEPROM.
  */
  #define NOZZLE_TO_PROBE_OFFSET { 48, -2, 0 }
#endif
 
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Jehannum

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Did you just add a G29 to the start code, or anything more specific?
Here's my start code from Cura.
Code:
M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk
M220 S100 ;Reset Feedrate
M221 S100 ;Reset Flowrate

G28 ;Home
G29 ;level bed

G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up
G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position
G1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line
G1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little
G1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line
G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up
IIRC, there's a way to store the mesh in memory so you don't have to probe between runs, but I got lazy and didn't implement it.
 

Jehannum

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