I ran calibration test and destroyed my bed  

Re: I ran calibration test and destroyed my bed

Feel your pain. Really.

First. The instructions on the XYZ calibration test specifically say to put a piece of paper under the nozzle, and to monitor the printer, and if the paper moves (the nozzle drags the paper) you need to shut off the printer immediately. It even made you verify that you read that before starting.

Second. Here is what the printer is doing. It is searching for the calibration points. It starts high and keeps moving down until either the calibration point triggers or you turn it off. If it does not find the calibration points then you PINDA sensor is too high up and it cannot detect the calibration point. You need to move it down.

Third. This post might help:
http://shop.prusa3d.com/forum/prusa-i3-kit-building-calibrating-first-print-main-f6/-before-you-ask-troubleshooting-video-updated--t472.html#p39190

Fourth: The PEI sheet is rather robust, and will reform as you use the heated bed. For now I would proceed and get the printer calibrated, and avoid this part of the bed when printing if possible. It might re-form. I have had large gouges that did over time. If not, you can replace the PEI sheet. They are about $10. But I would wait and do that after you get the printer all going.

Good luck.

Re: I ran calibration test and destroyed my bed

You could also turn the heated bed up to 100C and let sit sit for an hour or so. See if that area re-forms sufficiently.

Re: I ran calibration test and destroyed my bed

Hi David!

Ouch!...

What's it like under the PEI...

does the heat bed still heat up?
if so, and there is no damage to the actual PCB,

it may be just a new PEI Sheet

but before hand, just leave the heatbed on for a while, at a high temperature... when printing you sometimes get bubbles under the PEI, which disappear after a while... your ruts may reduce without too much investment in spares

regards Joan

Re: I ran calibration test and destroyed my bed

Hi David!

Ouch!...

What's it like under the PEI...

does the heat bed still heat up?
if so, and there is no damage to the actual PCB,

it may be just a new PEI Sheet

but before hand, just leave the heatbed on for a while, at a high temperature... when printing you sometimes get bubbles under the PEI, which disappear after a while... your ruts may reduce without too much investment in spares

regards Joan

Re: I ran calibration test and destroyed my bed

Okay... all of this makes me feel a little better.

I didn't even want to run the calibration, I just wanted to calibrate the Z-axis ONLY... which it did... but then it started the other parts of the calibration.

Re: I ran calibration test and destroyed my bed

I'm confused a little - is that the heat bed - or the build plate?
On my instructions the calibration is performed without the steel build plate - and of course that sheet of paper
I do have issues where the probe seems to not work, or not be listened to, at random times - a hard boot and re run seems to fix the problem.

Good luck in getting your heat bed - or build plate to fix itself - nice to know that is possible

Re: I ran calibration test and destroyed my bed

I'm confused a little - is that the heat bed - or the build plate?
On my instructions the calibration is performed without the steel build plate - and of course that sheet of paper
I do have issues where the probe seems to not work, or not be listened to, at random times - a hard boot and re run seems to fix the problem.

Good luck in getting your heat bed - or build plate to fix itself - nice to know that is possible

That is a photo of the MK2 - so it is both the heat bed and the build plate. They are not separate on the MK2.

Re: I ran calibration test and destroyed my bed

That is a photo of the MK2 - so it is both the heat bed and the build plate. They are not separate on the MK2.

So, I need to buy a whole new build plate if I want to fix this?

This seems at odds with this article http://manual.prusa3d.com/Guide/Replacing+the+PEI+sheet/133#_ga=2.98313433.750781154.1519514033-1919007852.1519079405

Re: I ran calibration test and destroyed my bed

If the bed still heats up you should not need a new one. It looks like you've only plowed the PEI sheet that is on top of the build plate. As others have said just heat up the bed and let it settle out a little. Also, as suggested, if you can offset your prints away from this area it won't be a problem. I did the same to my printer over a year ago when I set up my kit. It bothered me a lot at first but a thousand prints later it's just not a big deal. Yesterday I finally upgraded my Mk2 to an S and replaced the PEI sheet. We'll see if I gouge it again when I go through calibration. 😀
Don't lose sleep over it.

Re: I ran calibration test and destroyed my bed

If the bed still heats up you should not need a new one. It looks like you've only plowed the PEI sheet that is on top of the build plate. As others have said just heat up the bed and let it settle out a little. Also, as suggested, if you can offset your prints away from this area it won't be a problem. I did the same to my printer over a year ago when I set up my kit. It bothered me a lot at first but a thousand prints later it's just not a big deal. Yesterday I finally upgraded my Mk2 to an S and replaced the PEI sheet. We'll see if I gouge it again when I go through calibration. 😀
Don't lose sleep over it.

Thanks. The bed is heating up fine... I finally was able to get my Z-axis dialed in... now I have stupid filament problems, but this certainly makes feel better. 😀

Re: I ran calibration test and destroyed my bed

This is just the beginning of your journey Grasshopper. There's still much more fun to come. 😆