Drop-in replacement for Hypercube xcarriage. This one uses hidden nuts instead of the brass inserts. I also used LML8UU instead of 2xLM8UU. This one works better in situations where the part might come out warped (ABS) and the LM8UU wouldn't line up perfectly.
Be careful with the supports. If you print too much, you won't be able to get them out from the small structures.