The instructions say:
"Take one of the two 20x20x140mm corner pillar which have only two drilled holes (one has an extra hole on the side). Tap the hole indicated below. The profile you tapped will become the front right pillar of the frame later; mark it with a post-it or similar. remove the screw, the threaded hole will be used to mount Y limit switch later."
My kit came with three 20x20x140 extrusions that are identical. They all only have two drilled holes.
Has there been a change in the kit, or am I missing a correct piece?
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