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You can smear a layer of glue on glass to make the filament stick to it.

I am using geeetech prusa i3 too. Maybe the power for z motors is not high enough. There is a screw on motor driver, rotate it to raise the voltage between that screw and GND. According to my...

You can ask the seller or techique support what thermistor is fitted. Maybe I misunderstood your words at the beginning. It would be better if you describe your problem with some photos or video.

Yes, there are some pins for plugging jumper caps under stepper driver on mainboard. Did plug the jumper caps correctly according to the building instruction?

You can swap the connection of extruder thermistor with hot bed thermistor. If it displays other error about sensor instead of "bed sensor error", we can conclude the hot bed thermistor is bad.
I...

What type of slicer software are you using? I use Repetier-Host with slic3r as slicer software, if you use slic3r too, I think I can help you.

I don't know if the setting in this page satisfies you:
http://www.geeetech.com/forum/viewtopic.php?f=24&t=16366

Everytime I print in PLA, I set the temperature of platform to 80 degrees. You can buy special glue for ABS, it works! Sometimes when I am out of ABS glue, I use common glue temporarily, and it works...

You can smear a layer of common liquid glue on hot bed, and set the proper temperature of bed.

The strange lines must show up when the printer is printing another circle. You can set the extruder to restract more filament when printing next circle.

Is somewhere of filament get stuck that the motor can not pull it ?

Is the hot bed thermistor fine? Can you get a stable resistance with multimeter?

How about re-uploading the firmware?

After re-uploading the firmware for some times, it works again now!. I think maybe its is communication issue that cause the firmware was not completely upload to mainboard.

I am using Geeetech Prusa I3B, with LCD 2004 smart controller, and the printer has been working perfectly for almost a half of year. Yesterday, when I was printing, the LCD suddenly showed only 2...

If he can use computer of smart phone , a 3D printer is not hard to operate for him.

Sometimes 60 degrees is not high enough, I usually raise the temperature to 80 degrees.

Undoubtedly, size matters. Yesterday, I shrank a model and tried to printed it, buy the printing is horrible because it was so small that the nozzle melted the model. Also, the speed can influence...

Must you buy M3D or mod-t? I bought a pursa i3 2 months ago, and it has a very good performance and never have any problem. Not too expensive, I think you can consider ....

How about this one?
http://www.geeetech.com/assembled-me-creator-mini-desktop-3d-printer-p-876.html

How about Geeetech ME Creator?
Printing volume: 150x150x150mm
http://www.geeetech.com/assembled-me-creator-mini-desktop-3d-printer-p-876.html

If you want to improve the adhension, why not use the glue for ABS? If the temperature of hot bed is high enough, PLA can stick to the bed. Worst, you can also use the glue.

OK ,I will try it. Thanks.

After all, my printer is only $299, so the precision maybe lower than yours. But I got perfect print when I print a bigger object with 15% infill.
In this passage, I want to let everyone see a more...

Hi, everyone. This passage is mainly written for those who uses 3D printer for the first time.
I want to share some printing results with different slicer settings. Hope this will help some of you....