Geeetech

I got an a10 for my birthday. This is my first printed I had to put together myself, my last was a CR-10. I watched numerous tutorials and followed the directions exactly.

Got it leveled and started to print the dog off the card. About 6 layers in it starts making a plastic scraping noise then gets stuck and pulls the print off the bed.

I clean it up and recheck the leveling, then start over. This time it only makes it through half of the first layer before it scrapes it off. It's like the nozzle dropped or the bed suddenly jumped up. When I stopped it and homed it it dug into and scratched the bed.

I have tried to no avail to fix the problem, I contacted the store I purchased it from and asoes if I could bring it in and pay him to get it figured out but he kind of brushed it off and told me to check the z axis nut.

Any help would be amazing!

Search for another similar thread in the last few days (http://www.geeetech.com/forum/viewtopic ... 98&t=62269)... it's something I've noted as well on my A-10M printer, though I've never been able to fully test my machine because the heated bed never turned on from the first time I flipped the switch (waiting on Geeetech resolution, they have promised new replacement parts) -- and thus haven't been able to do any of the test prints from the SD card. Have printed on an unheated bed via cura and octoprint, but that simply revealed other problems with extruder feed rates (and severe under-extrusion) that I'm hoping new firmware and Vref-tweaking will help fix once I get the new motherboard they have promised me.

Anyway, the way it seems to me and the other poster from a couple of days ago, is that the holes on the bed are too snug for the bolts, and while you think you might have perfectly leveled the bed (and you have, temporarily), the thread really just gets hung up on one of the holes, and the bed isn't seated correctly all the way down -- and all it takes is a little bump to make the bed jump a thread or two (sometimes not even all the way after one or two tries, as you've found out).

The suggested fix is to remove the bed completely, and re-drill the holes slightly bigger so the bolts move up and down easier. You'll notice how tight the tolerances are when you go to remove the bed. I've had mine off twice doing the troubleshooting for Geeetech, demonstrating the problem I'm having, measuring resistances, voltages, etc etc.

Good luck.