Creality Ender 4 Gantry Carriage
cults3d
A simply remix of the gantry parts from Greg191134's comprehensive Core XY upgrade for the Creality Ender 4 (https://www.thingiverse.com/thing:2686559), to reduce twisting inherent to H-bot printers. I've added holes and clearance to continue using pulleys in the H-Bot configuration, which can be used as is, or in combination with the rest of the conversion to go full Core XY. I've included a stop that comes with the original pack for completeness. Warning: I made an error with v1, v2 of the mirrored bracket should properly engage the X ends-top. Check the clearance between the ends-top lever and the screw retaining the pulley bolt. Either move the end-stop down or use a thin nut if necessary. v3 has a recess and should prevent the bolt from impeding the end-stop. Put washers in at the top of the bolt or use a shorter bolt. I've added a hole for a trim bolt on both v4 brackets. If your print isn't perfectly square, use a m5 trim bolt and nut in each bracket. Check the front of the frame with a right-angle tool, move gantry forward to end-stop position, measure distance to the beam in front of the gantry at each side. Equalise these distances using the trim bolts. Version history: V1: Added holes and a groove in the end-stop to access the nut. Left/mirror bracket now deleted. V2: Fixed the end-stop on the left/mirror bracket. V3: Added recess for nut near end-stop on the left/mirror bracket. V4: Added trim screw hole to perfectly square the gantry to both brackets. Widened gantry channel by 0.3mm to allow movement when trimming. Added a long end-stop version. Check hoe your end-stop will fit, if necessary, cut the paddle off on the slicer to give you options, or print mirrored. V5: Changed the trim hole to a slot, added m3 screw holes into end-stop block to allow end-stop adjustment. There's a very handy complimentary part by ronpandolfi, which fits underneath the upper crossbeams to make a sandwich with this piece. Y Carriage Cage Plate (Ender-4) https://www.thingiverse.com/thing:2963291
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