<p>I've found many Youtube videos of makers upgrading to BLTouch sensor. </p>

<p>I have a Creality CR-10S Pro, so far bed leveling hasn't been an issue (after some days of trial and error). </p>

<p>My question is what are the problems/issues users need to face in order to need (or justify) an upgrade?</p>

[{'answer_id': 13470, 'author': 'FarO', 'author_id': 2338, 'author_profile': 'https://3dprinting.stackexchange.com/users/2338', 'pm_score': 1, 'selected': False, 'text': "<p>I don't know your printer but I don't have BLtouch, and I have to set the height every time because the bed expands with heat.</p>\n\n<p>If you print at variable bed temperature (PLA, ABS, PETg, nylon require different values) then that sensor helps a lot.</p>\n\n<p>BL touch can also speed up bed calibration: you scan the bed, see the values to be corrected, adjust the bed without having to guess (given the thread pitch and required correction).</p>\n\n<p>Also, if you print only in the center it's easy but if you print fully using the size of the bed, I doubt you can get very flat bed. The BLtouch helps for that too.</p>\n\n<p>Also, there are clones like 3D touch which were tested and work equally well. Depending on your budget, they may be an interesting alternative.</p>\n"}, {'answer_id': 13471, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 2, 'selected': False, 'text': '<p>A touch or an inductive/capacitive sensor is useful when you cannot get prints to stick to the build surface because of a  skew bed platform/heated plate or if the plate has a bend, large concave or convex area.</p>\n<p>Even with such a sensor, you need to provide a bed that is as level (trammed) as you can get. Automatic Bed Levelling (ABL) is not magic, it is just a tool that can help out if you have a problematic bed surface. But, recent versions of Marlin have &quot;manual bed levelling&quot;; i.e. you can map the surface using your printer without a sensor and store that geometry in memory.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/13469', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/20739/']