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110mm calibration piece

by Sebastius, published

110mm calibration piece by Sebastius Aug 7, 2012
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Summary

To make calibration easy, use this large easy to print piece. 110mm for x and y, 4mm height. All squares are 10mm x 10mm.

The difference to smaller calibration pieces is that you can find really tiny errors with this. I found a 2% error in my print, 3 mm at this size. A standard 20mm calibration cube would have given you a .4mm difference. Still measurable but a lot more difficult.

Instructions

Print, cool, measure, calibrate, print again, measure, calibrate again :)

Calibration is done like this

Get your X or Y calibration value from Slicer.

Measure the X or Y length of the piece

Use following formula

(110 x OldCalib) / Measurement = NewCalib

So my old value was 61.2555 for X and I measured 107.50mm.

110 x 61.2555 = 6738.105

6738.105 / 107.5 = 62.6800

So i now have a better calibrated bot!

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I have a little problem with the squares 10mm x 10mm
my Print is 9.65 x 9.65 mm can i fix it ?

All of these comments are pretty old, but I wouldn't recommend putting those into the Start Gcode. These should be flashed directly to your arduino. Near the bottom there is a space that allows you to insert these values permanently. This also gives you a reason to learn more about your printer.

This comment has been deleted.

very useful for fine tuning thanks!

This was useful--thanks!

generally where are the calibration values within slicer?

Hi Mech, i'm sure you've figured it out, but for anyone else wondering, these calibration values are found under Printer Settings --> Custom G-Code in Slic3r. Hope that helps!

Hi~ Where in custom G-Code settings can you input a calibration value? Is it a special command to be inserted at start, end, layer change or (unlikely) tool change command sets? Maybe its just an old slic3r function? I've been seeking some quantitative calibration methods for weeks.Thanks in advance!

Hi~ Where in custom G-Code settings can you input a calibration value? Is it a special command to be inserted at start, end, layer change or (unlikely) tool change command sets? Maybe its just an old slic3r function? I've been seeking some quantitative calibration methods for weeks.Thanks in advance!

Pretty good explanation here, including what the codes are, and some sample values:

http://www.thingiverse.com/thing:53668http://www.thingiverse.com/thi...

50mm calibration angle
by ramai

Thanks!

You put it under Start G-code. That tells your printer to calibrate itself accordingly when printing that model.

My entire Start G-code says:

G28 ; home all axes

M92 X63.0242 ; calibrate X

M92 Y62.7669 ; calibrate Y

M92 Z2287.4147 ; calibrate Z

M92 E610 ; calibrate E

Ah, I see. Here I thought these were all supposed to be decimal integer values for raw motor steps. Thanks!

I have no calibration values in my Slic3r start G-code (I am Newbie). Does that mean I take "1" to start with calculations?

I wonder the same thing. Please help :)

Thanks to this piece I've got my bot within 0.5%. Very useful.

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