A wedge that fits in the left recess of the CoreOne+, creating a level platform. I attached a 5x2 Gridfinity baseplate so all my printer tools and accessories are tidy and convenient. The wedge was too long so I split the model with finger joints then super-glued the two pieces together. There are recesses on the bottom for 8x 8x3 magnets to hold it tight to the CoreOne case. In the picture, a 5x2 Gridfinity base plate has been glued to the wedge. All three parts are printed in SUNLU clear orange PLA at 0.28mm draft resolution.