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Target patch dispenser for single 25mm/500pcs roll. Takes rolls up to OD 64mm and down to ID 37mm. Backing tape can be as wide as 28mm and alternative tape paths does that patches can be on any side of it.

Print with seam setting “aligned” to avoid pips all over the print. There are special features of the model guiding the seam to invisible places. Run a sandpaper through tape paths to clear them from any blobs or whiskers. 

I used a 0.4 mm nozzle, 0.2mm layers, 15% Gyroid infill, mostly PETG. 

It prints well in PLA and in PETG which is more resistant to deforming in hot conditions than PLA is.

There are three double roll versions here: https://www.printables.com/model/817993-target-patch-dispenser