Print accuracy
Hello, I would like to ask if there is any method or model by which I could find out at what layer height I have the accuracy of printing. The point is that if I design something and I know that the printer is printing 0.2 mm smaller for me, I will increase it by this value.
RE: Print accuracy
I'm not sure what accuracy you are looking for - is it in X and Y direction or Z direction or all?
Easiest way to get a measure is to print a calibration cube and measure it with a caliper.
Have a look at my models on Printables.com 😉
RE: Print accuracy
Yes i want all direction
RE: Print accuracy
When I printed my calibration cube I got this in XYZ (mm): 20.1, 20.05, 19.98.
I guess that if I wanted I could calibrate it much better. But I don't feel a need for now.
RE: Print accuracy
I've found that dimensions of an object printed with the I3 are always well within 1%. If I ever question it, I'll print a calibration cube and measure it with a digital caliper.
I'm confident that the geometrical accuracy of the machine, as in the steppers and the mechanical components, is highly accurate. However, when it comes to the practicalities of heating and squeezing a bead of molten plastic upon a surface, there are many variables, which, cumulatively, affect the final dimensions of the finished print.
There are some cases where it's necessary to do iterative trial-and-error to make things fit. Things like bolt holes, holes to receive self-tapping screws, registration pegs and the holes into which they fit and the like.
RE: Print accuracy
This guy claims his calilbration test is 4x faster:
RE: Print accuracy
This guy claims his calilbration test is 4x faster:
It appears to me that this is intended for cases where errors are in excess of 1% or so, and are related to the mechanical accuracy of the machine.