Is Vision Encoder worth? Is there any big difference if you use it?

Bambu Lab H2D
103

You should all listen to Dr TAO interview on the vision encoder where he explains the difference between resolution, precision and accuracy.

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104

He offers another nugget of advice which is to use a filament with low shrinkage, perhaps one with CF in it, because he says the shape of the part may affect how well the shrinkage compensation works.

If youā€™re expecting to visually see a difference after using the plate, I think youā€™ll be disappointed. However, if youā€™re printing something with gears that mesh, maybe youā€™ll notice a difference in how well they mesh. Likewise for parts that fit together with tight tolerance.

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105

Iā€™m glad I read about the hard-to-spot film here. I actively looked for one but was unable to see it so ran a calibration with it still there - which completed just fine. Recalling this thread I then looked again and again until I saw a faint bubble in a corner. Sure enough there was a film.

Interestingly enough, a new calibration after removing it ended up within 5-12 Āµm from the previous result.

Apart from that story I had a maximum improvement of 1054 Āµmā€¦ wtaf!? Over a full millimeter?! Iā€™ve had the printer for like 10 days, maybe I should print some serious tests instead of filament clips.

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106

tighten your belts i guess

107

Yeah, im thinking the h2d actually needed this plateā€¦For some reason. 1mm is nuts. Imagine if they shipped it to someone who couldnt afford the plate with the printer. With 1mm, id expect the plate to come in the box. At first, I thought the plate took the precision to ā€œbeyond normalā€, but the more I see people post their compensation numbers, the more im thinking that without the plate, the h2d is sloppy.

One of my printers was off by 550ish and the other by 450ish. Imagine if I was stuck with that variance.

108

It makes a difference if you print parts that need tight clearance.

Iā€™ve found that after using the vision encoder plate, my H2D will reliably, repeatably print articulating functional parts with clearance gaps down to ~0.05mm on straight parts, and 0.07mm on circular parts enclosed all around the circumference.

Before using the vision encoder plate, there were inconsistent results with gaps <0.15mm (some positions were good, some were unfreeably ā€œstuckā€).

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