J.Azla J1 Micrometer Z stop

thingiverse

I'm not one to rely solely on firmware for precise Z height adjustments, preferring instead for the print head to come to a stop at exactly the right distance above the print bed. This is an incredibly simple modification that makes it easy to fine-tune the Z height. I used three 15mm machine screws and one 30mm screw. A longer 4mm screw and some flat washers helped shim the standard Z stop out into its new position about 3-4 mm from the vertical riser on the front of the upright, rather than having it hide under the end of the left side. The beauty of a 3mm thread is that it allows for very fine Z adjustments. A single quarter-turn adjustment is equivalent to .125mm. It's also an easy reach with a 4" long Phillips head or hex head. The belt drive flexes out of the way when making adjustments. You can print this adapter plate however you like, but I used a layer height of 0.2 and walls that were 1.5mm wide with 25% infill. I paid $76 for this printer on sale and found it makes excellent prints. Here are some other modifications I've made: https://www.thingiverse.com/thing:4272496