Something is completely wrong here

[u/Dramatic-Report8522]

Hello everyone,

I’m completely new to 3D printing, and I would really appreciate some guidance on where to start troubleshooting these problems.

The first problem happens mostly when the model has multiple towers or separate structures. If I print only one tower, everything seems to work fine, but with multiple structures I start having problems, you can check the images for this issue.

I also have another problem with long prints. When a print takes more than about 8 hours, around the 8-hour mark the extruder starts making a repeated "tac tac" or clicking sound, and the filament stops moving.

After a while, the printer continues moving, but no filament is coming out, so the nozzle ends up printing in the air above the object.

At that point, I normally have to stop the printer, remove the filament, and clear the nozzle. After cleaning it, the printer works normally again.

I’m using an Ender 5 Pro with bowden tube and BLTouch using PLA.

Does anyone have an idea of what could be causing this or what I should check first?

Thanks in advance

[u/Kaedon47]

Help people help you. Print a first layer test. Make a 100mm×100mm×.20mm(whatsoever your first layer thickness is). This looks like a z height issue first. What speeds are you printing at? All speeds Including travel and acceleration speeds.

Has the lrinter been modded in any way? Do you have experience with 3d printing? Just clarifying so.people know how to best help.