XYZ Printing DaVinci Calibration Errors (Page 1 of 2)

Use this Android app to get a pass .... http://www.amazon.co.uk/gp/product/B00L … =mas_ya_dp
It should work after 2 or 3 trys at most.
Then forget about the auto calibration and use the manual method as described here .... http://www.soliforum.com/topic/8408/bed … beginners/

If the "Bed Leveling for Beginers" doesn't work for me, and if you have the app, maybe I could send you the numbers and you tell me how many times I need to rotate? No pressure!

Thanks,
Andrew

Yeah, no problem.

That is where you made your mistake. If you read my method correctly it told you specifically never to run auto cal again after you get a pass.

Run auto cal once till you get a pass. It does not matter what the values are. It is simply to store a value that the printer sees as a pass.  Once you get a pass then use the paper method and never run auto cal again. The issue with auto cal is that it does not know your print height and that is critical in determining your correct bed height. The height should be half of your print height. A sheet of paper puts you around .15mm which is good for most print heights unless you go below .2 which is for the most part useless and you are printing artistic objects.

Also the numbers are reversed from the screws so that adds to it's complexity. The number are from left to right A, B, C, the screws are actually  A= Back right, B=Front Center, and C=Back Left.

If you get all three values to within 20 of each other the machine should give you a PASS or a single value depending on your firmware version. The vales you want should be in the low to mid 200's. That is the range the machine is programmed to be acceptable. But that range is actually wrong for printing so this is why we set the machine for that range but then do the paper method. The machine still thinks it is operating in the set range while it is actually operating at the values we set with paper.

The values represent the space between the nozzle and the bed at those 3 points. For example a value on the display of 235 would be .235mm. The machine will also round to the nearest .10 or .5 depending on the firmware as well so that in addition is another variance that cause the value to be wrong for actual printing.

Ok so:
1). I start a print, as it squirts the filament out, power it off.
2). Level it with your paper method.
3). Turn it back on and run "Home Axes"
4). Print something.

Right?

Thanks for your help!
Andrew

The app seems to get more accurate the more you run it. Took me 3 goes but saved hours of messing about trying to guess how much to adjust.

Here's the next set of adjustments based on your new figures ....

Closer.. I think! The values are "+205, +105, +215"

Now I really wish they had the app online or for iOS!

Thanks,
Andrew

You also need to make sure that the metal tab on each of the 3 corners are clean. I have found that if there is any dust or anything even if it is small enough to not see it that can cause the numbers to be way off. I always clean the 3 corners after each attempt.

NO!!!! It's still off! "+215, +335, +205" Sorry, I hope I'm not asking too much.

-Andrew

Are you sure you only turned the middle screw a half turn to your left? The value has almost doubled in the wrong direction. Turning to the left or clockwise when viewed over head raises the bed which lowers the value. Turning a screw to your right or counter clockwise when viewed over head lowers the bed and increases the value. The thing to remember is the bed pivots on screw B so moving screw A will have a slight opposite affect on screw C and viceversa. If A goes down C will rise slightly, if A goes up then C will lower slightly so you can't adjust one screw only. If you Adjust A, then you will most likely need to move screw C in the opposite direction by about half the turns. Thats why you must make sure you do the exact number of turns the image is showing and in the correct direction that the arrow is pointing.

I cant do screen shots but based on your current values you need to turn back right .29 turns counter clockwise or away from you. Front middle .92 turns or 1 full turn to the your right or counter clockwise. Then back left needs 2.12 or 2 full turns clockwise or away from you. When I refer to a direction I refer to the open edge of the screw that your finger touches.