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I moved a little the belt tension, and now the last layer is awful and weird. How I will know the correct tension? My printer is a custom BLV 220 x 220 x 280.

I think and I am almost sure, that this happened because the filament got a little tangled in the profile where I put the spool of it while printing, but, last week this happened, and since that moment, it has been having problems, which I am going to show and explain.

The top-left corner, after I started to change the tension belt, was worst, because the corner was more pronounced, pulling as elongated, in the image you can see a little, but it was worse the last few days.

And now, the rectangle orange, is new, because yesterday I changed the tension belt, and the last layer is like I show in the image.

one

At this moment, I am testing different tension, but the result is worse.

double

Pedro Miguel Pimienta Morales
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1 Answers1

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Experienced users of the printers just know it by feel, but for newbies there are apps for Android, like:

Belt tension meter (Newtons)

Easy Tension (lbf)

There are probably iPhone apps like that, I don't know them personally.

You measure and enter dimensions of your belt mechanism (as instructed by the app), then "strum" the belt (like a guitar string) within reach of your phone's microphone, and the app converts the frequency to force in Newtons or Pounds Force.

The "best" tension varies from printer to printer, but generally falls between 15N and 25N (~3.5 - 6 lbf); if you don't know what is best on your printer, going with 20N/4.5lbf is a safe bet that will produce reasonable results.

SF.
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