Gulfcoast Robotics Dual Linear Y Ender 3v1 Bracket (2040 Y Gantry)
Description
I've got an original Ender 3 with the 2040 Y gantry instead of the 4040 Y gantry. There are virtually no easy-to-use dual linear Y rail kits that work with the 2040 rail. I had bought a [Gulfcoast Robotics 3-point carriage](https://gulfcoast-robotics.com/collections/products/products/modular-y-carriage-plate-upgrade-creality-ender-3-point-leveling/), and realized I could make a bracket for this to support a pair of MGN12H rails. Their customer support was awesome and sent me an STL of the bed itself so I could mock it up real easy in tinkercad! V1 is kinda blocky and honestly the support arms got in the way while screwing it together. So I made V2 with a slope for support instead, and cut out some of the unnecessary material that spans the gap between the two rails. I'm printing the V2 bracket right now with the V1 installed. Took an hour or so to get the rails on _just_ right, but it's just as smooth as with the old wheels - but now it's solid as a rock. I trammed it, leveled it, ran ABL. Then I roughhoused the bed, pushing up and down on all the corners with a lot of force, and re-ran ABL. Virtually no change at all! Hopefully now I'll have reliable consistency between prints. Used a bunch of M3 bolts for the MGN12H head and M3 bolts and nuts for the carriage. I think they were M3x12s, maybe M3x10s. Locking nuts would be best, but since I didn't have any I just torqued a second nut on top of the first set. I changed literally nothing else - no new belts, no drilling, didn't even have to adjust my Y limiter! I'd rather have printed this in PETG but don't have any, so I just used the only spool of PLA+ that I had.
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