z has crazy numbers  

RE: z has crazy numbers

I be leave that you have downloaded bad gcode, and have reset your printer settings?

In Reply I suggest that you watch this video

YouTube: Why you shouldn't use gcode from Prusaprinters )-"ANYONE"!!

I will describe the issues your having and possible cure.

good luck

RE: z has crazy numbers

1. Is the PINDA probe working? Test with metal object near its tip. Does the light go off/on. Does the filament sensor status in the LCD support menus change status?

2. Recheck that PINDA is physically 0.8 to 1.0 mm above tip of nozzle.

3. Your factory reset was with DATA ERASE, right?

4. Once all three of the above are verified, proceed with XYZ calibration. You won't get a valid Z figure until you complete a new XYZ calibration. 

RE: z has crazy numbers

And as an FYI: gcode can't drive the nozzle into the bed - the PINDA sets Z-home, the elevation off the bed. The printer firmware will not allow the nozzle to go below 0 mm.  The only way the nozzle hits the bed is if the PINDA has failed, or something is under a portion of the steel sheet making it substantially higher than where the printer homes Z.

RE: z has crazy numbers

Thanks all.

Well, I turned on the printer this morning and it seems fine. Had to recalibrate it and now it's back to being amazing.

Thanks for the feedback. I will keep this pinned if it happens again.

Glenn

RE: z has crazy numbers

Got my new MK3S all put together, ate all the gummy bears, and it even works. 😛

I have the powder coated sheet and it works really good for PETG but I am having a heck of time getting PLA to stick to it.
I've used gallons of 91% IPA on it with no improvement.

I am now considering getting something other then the PC sheet for printing PLA, and I will use the PC sheet for PETG.

Is there an option to purchase the smooth steel sheets? I could not find that they were for sale by themselves.

RE: z has crazy numbers

Most PC sheet owners have found a good Dawn/Fairy detergent wash in hot water until water beads up and sheets off is required. Once washed and dried using fresh paper towels and handling by the edges, then place on printer heat the bed to 80c for 30 minutes to bake any residual moisture off.

RE: z has crazy numbers

Posted by: @teldertobin303

[...] Is there an option to purchase the smooth steel sheets? I could not find that they were for sale by themselves.

If you log in on the e-store you should be able to find both the spring steel sheet with dual-sided smooth PEI applied, as well as replacement PEI sheets. The spring steel sheets are a very good price, even with shipping included.

My general recommendation is to buy the smooth PEI if you're only buying one surface, but both if you can. There is apparently some variation in the condition of the textured sheets being shipped. A lot of people are having great success using them with PLA, while others are having a miserable time with it. I'm in the latter camp. I'm reserving the textured sheet for PETG at this point.