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UM3 Loose Rod

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Hi all,

I am using an UM3 extended, and very soon the plastic slide blocks cracked.

It was still printing, but now the Y-rod (The one the printing head moves on) came loose on the right side.


Anyone had this problem too? And what can I do about it?

Thanks for any help,



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This is a well known issue. If you contact your reseller they will replace the block for you.

In the mean time if you still need to use your printer then you can print these to hold it together.

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Ok, thank you, I allready saw that the cracks were a common problem. But the rod that is on it, is not glued or anything? It worries me that that one came loose.

This way I can no longer print the side block caps :-(



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Dear Jan,

The rods are only clamped in, but this is when the blocks are not broken enough to keep them firmly in place. However because of the crack it lost its grip and the rod can shoot out. I would advice to not print and repair it first to make sure you do not damage the machine.

Kind regards,

Job van Gennip

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