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I have a QIDI Tech 1. It has a heated bed, and a cooling fan attachment. Whenever I print without a raft, the first inch or two of material laid down does not adhere to the bed, but the rest of the first layer is flawless.

I have tried speeding up and slowing down the first layer walls, but the problem remains. It also seemed to get a little worse when slower. I also tried not turning on the cooling fan for a bit to see if maybe the material was cooling too quickly, but that had zero effect on it.

I'd like to avoid using tape and other methods since the rest of the print is perfect, and the bed already has a material on it to aid adhesion.

What else can I try to prevent the dragging for the start of the print?

1 Answer 1

I've had this problem in the past with a Flux Delta printer. The first attempt to resolve it was to always use a brim along with a raft. The brim will often have settings to allow number of passes as well as number of layers. If you are not using the brim to provide adhesion, you still can use it to prime the nozzle.

Later versions of the software allowed for start g-code which moved the nozzle to the edge of the print area and extruded 10-40 mm of filament, also providing for priming the nozzle.

You've not noted what slicer you are using. You may find there are suitable locations to position the head to an unused area, run a few mm of filament, then begin your print.

Amazon Q&A says your printer accepts g-code, which implies the slicer generates same.

In combination with a brim, you may have your solution. I've also found that you have a heated bed. If you have a cold spot on the bed, adhesion may be a problem, although I think that is not the case, based on your description.