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In addition, we use spectra fishing line which produces higher resolution prints than using belts.
Can I ask another newbie question here, while I can see that belts may wear, and have a bit of play in the engagement of the teeth, why is fishing line going to produce higher resolution prints, from what I can see of it, the resolution will be down to the size of the belt, the slack or otherwise in the engagement of the belt with the pulley, and a host of other factors that are nothing to do with the drive, and everything to do with the slack in the multitude of bearings that are connected to the towers, the link arms and the related links. Even something as simple as some torsional twist in the towes will throw things off, if not corrected and locked so that it can't twist
Looking at some of the line based systems, they are using pulleys that are grooved, so the angle of the line between the drive pulley and the intermediate pulley on the tower is changing, which will (albeit only a very small amount) vary the length of the filament, thereby stretching it slightly as the tower moves away from the centre position of the filament.
Is this just marketing hype, or have I missed something fundamental here? I'm asking as I'm about to start building a belt based Delta Pi shortly, but if that's the wrong way to drive the towers, I could change it, but long experience with belts on all manner of things makes me think that there is not the issue with belts that is being implied here.
Thanks