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pitmaster40

I am having several cracks in some plastic parts

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The crack in the top piece of the print head was a problem a while back when they were tightening the four thumbscrews way too hard. I've replaced a few of those. If you don't mind the look of it, I wouldn't bother doing anything about it (it's a bit of a pain to replace). It will not affect the performance of the printer in any way.

The crack in the sliding block is something I haven't seen before though. That one is slightly more worrying as it could theoretically lead to the cross rod coming loose. I don't think it's likely, but it's possible if the crack gets big enough (I can't really see the crack in the picture).

If you're willing to replace it yourself I would request new parts from Ultimaker or your reseller. I've only replaced those parts once but it took me a while and you only have one chance as you can get the pieces apart once you squeeze them together. It was probably more of a pain for me as I tried to do it while most of the rods were still in place.

If you're not willing to do that I would consider contacting Ultimaker/the store you bought it from and see if you can send it in for repair.

Again, I think it's unlikely that it will fail catastrophically, but you never know.

 

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