I found out why my M200 was crashing into the platform

After my printer (Zortrax M200) kept crashing into the perforated platform I was determined to find where the problem lies. After a couple of quick checks with a multimeter I found out that occasionally there was no connectivity between the white wire going from the thermocouple to the nozzle.That could only mean one thing - there is a bad joint somewhere.

And there was a bad joint, chech this out:

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The wire was winded up three times around the braided sleeve and that was it. No wonder there was bad contact every now and then.

I crimped the wire to the braided sleeve and put it in a heat shrink tube. And that's how it should be done the first time.

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I also had to repair the platform. I filled the holes with solder and grinded the surface plat with a Dremel.

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Zortrax needs to step up their game a little bit.

Nice save! 

tell me about it; I'm facing a similar problem lately where the bed crashes into the nozzle sometimes when conducting calibration; After I manage to get my calibration right my print fails to stick to the raft. I'm following up with Zortrax support for two weeks and they keep telling me to calibrate the bed or clean it . total incompetence.

And I'm facing one where the after market auxiliary hot end fan housing is slamming into the little connector at the back, middle, and top of the print bed.  This started after I swapped in a new nozzle and it looks like the new has a little less clearance in Z than the one it replaced.

tell me about it; I'm facing a similar problem lately where the bed crashes into the nozzle sometimes when conducting calibration; After I manage to get my calibration right my print fails to stick to the raft. I'm following up with Zortrax support for two weeks and they keep telling me to calibrate the bed or clean it . total incompetence.

Hi Greycloud,
 
There are 5 silver squares on the perforated plate. These squares are conductive, voltage is conveyed to them. The voltage should amount to 3.2 V. The nozzle is grounded by the thermocouple, and once the plate touches it,
the circuit is being closed. So the problem here is simple - the circuit has not been closed, so the connection between these two parts has not been detected.

Do you have a multimeter? Please measure the voltage between the left or central pin of the plate and each calibration spot.

Also, I would measure the voltage between those silver squares and the hotend. Just to check if the thermocouple works correctly.

Feel free to contact me via PM.