I cracked my linear rod support top... now what?

While finishing up assembly and tightening the linear rod supports to the sled, i heard a pop. After some investigation, I noticed that the linear rod top was cracked. Pretty sure this means i didn’t properly seat the linear rod into the sled base, so it was sticking up higher than it should’ve been? I tapped both rods in with a hammer like the instructions suggested, but now I’m thinking i didn’t tap hard enough.

Am I cooked? Do I need to get new rod support tops? They’re not fully broken and seem reasonably intact. Would super glue do the trick? or is this enough of a structural problem that it requires replacement parts?

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If you are on the 4.0 rails there was a known issue the linear rails may have been cut long. The 4.1 kits replaced with more accurate length rails.

Super glue or plastic welding are things you can try.

Dano.

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I’m on a 4.1 kit, so in all likelihood i didn’t sink em in enough. Cheers for the insight!

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Drew Prindle wrote:

I’m on a 4.1 kit, so in all likelihood i didn’t sink em in enough. Cheers for
the insight!

I’ve got a 3d model of a clamp that grips the top of the rod rather than pushing
down on it if you want to experiment with printing them (I designed them, but
haven’t tried printing them)

David Lang

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I have noticed that the fit from the top support on top of the rod is tight (it should be) - but it can lead to the rod becoming racked inside the hole and not able to slide down straight. You only start to notice this as you screw in the top screws and it gets more and more stressed.

My solution was to whack the top support with a rubber mallet, seating it on the linear rod - before I started to tighten the bolts.

I agree that superglue and clamping it to its original shape might work. It could still have good lateral stability but it will lack the vertical stability - which i think there will be less need for.

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lay it on me! i’ll give it a shot

I am all for fixing things, but just in case it wasn’t clear we do have replacements available:

Drew Prindle wrote:

lay it on me! i’ll give it a shot

take a look at the top clamps tab of this document

David Lang