Endstop Triggers Too
by matthiasm, published
Description
End stop triggers are important! They should be fastened securely, no jam the optos, and allow for precise positioning at every new built.
These stops are designed so that the Z stage can travel below the build platform, calibrating the Makerbot for a repeatable distance between extruder and platform. This is done by setting X to center and Y all the way to the left. The extruder now misses the build platform, finding its calibration. A calibrated Z stage will bring perfect results at every build without manually positioning. Software will follow.
This is a complete set of six end stops. All six end stops are designed to fit right into their respective places. They are wedged for easy fitting into the existing slots on your MakerBot. All end stops should be a tight fit. They are designed for minimum interference with the system and should not jam the optocouplers once the are bent right.
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Did it work out? Mine are triggering just fine. Now it'll be software development next.
Awesome. I'll print them out and try it out again. Thanks!
OK, version 0006 no longer has the described problem. Sorry about that!
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Instructions
The double "plus" ones go on the x stage. The shorter tab (15mm) goes on the top facing the back wall. The longer one (17mm) goes in the bottom facing the front.
The ones with the small gap go on the Y stage, the longer 50mm tab points to the left, the shorter 43mm tab points to the right.
The ones with the 5mm gap go on the Z stage, the short one in the rear slot pointing up, the long one in the front slot pointing down.
All tabs can be shortnend to get the maximum build space.
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Oh man, this thing gave me soooo much trouble this morning.
The X stage endstops actually warped the slider holding the raft. This meant that the stage wouldn't slide in the X+ direction. This by itself wouldn't be a problem, but I did some maintenance to my makerbot the day before and didn't know that these endstops were the problem.
Ok everyone, if your X stage starts sticking after putting these on, its the problem!
Good design otherwise.
Holy =-O ! Yes, I see what's happening. Even though the X stage tab is designed right, it is printed slightly too big, pushing the ends of the X stage a bit. This changes the angle of the sliding bearings which in turn lock up the X stage. I will update the design and post here.
OK, version 0006 no longer has the described problem. Sorry about that!
Awesome. I'll print them out and try it out again. Thanks!