Free STL Files

On the dual head O1 Omni, the white layer under a rotary print can land slightly to one side of the colour on top. xTool's rotary dual head calibration fixes it, but it asks you to wrap the calibration sheet around a tumbler of a very specific size, and most of us do not have one that fits lying about.

This cylinder is that tumbler. Print it, stick the calibration sheet on, load it in the OR1 rotary and run the calibration exactly as the software asks. It then prints the test pattern, you pick the number where the two layers line up, and the offset is saved. It is the exact cylinder used in the L3D video and it dialled the offset in first time.

It doubles as a rotary test piece for the F2 Ultra UV and F2 Ultra too. Both the UV and fiber lasers mark PLA, so it is a cheap way to check rotary alignment and settings before you put a real tumbler in.

Every new laser setting and every UV print wants a test first, and the thing you test on should be flat, cheap and always to hand. This is the small one: a 60 mm square, 2 mm thick, with nothing on it. Print a tray of them and you can run a power and speed grid on one, a colour test on another, and throw them away without a second thought.

PLA marks with diode, IR, fiber and UV lasers and takes UV print, so the same tile works on the F1, F2, the Ultra series and the O1 Omni. Print it in white or a light colour for printing onto, any colour for laser tests.

A 100 mm square, 2 mm thick, with nothing on it. It is sized for the 115 x 115 mm working area of the xTool F1, F1 Lite and F2, so it fills the bed with a margin for the frame outline and you can test a full-size design in one go. On the O1 Omni it is a coaster-sized canvas.

PLA marks with diode, IR, fiber and UV lasers and takes UV print. Print it in white or a light colour for printing onto, any colour for laser tests. Prints on any 3D printer.

A 180 mm square, 2 mm thick, with nothing on it. This size exists because 180 mm is the bed of the Bambu A1 Mini and other small printers, so it is the biggest blank most people can print. It fits the O1 Omni and the 220 mm beds of the F1 Ultra, F2 Ultra and F2 Ultra UV. It is too big for the F1 and F2.

It makes a decent finished piece too. A full colour print onto a printed plate is a quick way to show what UV printing on 3D printed parts looks like, and this is the plate used in the L3D videos on exactly that.

A 200 mm square, 2 mm thick, with nothing on it. It is sized for the 220 x 220 mm working area of the xTool F1 Ultra, F2 Ultra and F2 Ultra UV, so it fills the bed with a margin for the frame outline and you can test a full-size design in one go. It works as a large canvas on the O1 Omni too.

You need a 3D printer with a 256 mm or larger bed, such as the Bambu A1, P1 or X1 series. Print it in white or a light colour for printing onto, any colour for laser tests.

A 250 mm square, 2 mm thick, with nothing on it. This is the big canvas for the O1 Omni: large enough for a full colour piece you would be happy to put on a wall, and a quick way to show what UV printing on 3D printed parts looks like. It is too big for the F series beds, so it is an O1 Omni blank only.

You need a 3D printer with a 256 mm or larger bed, such as the Bambu A1, P1 or X1 series. Print it in white or a light colour so the colours come through clean.