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Re: Fixing a superficial crack with superglue?

Author: clarnibass
Date: 2023-12-10 14:26
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>> The crack looks worse in the photo because of the magnification.
>> It is not that wide or deep as it may seem looking at the photo.

It's very easy to resize the window so the photo is about real life size... and the crack is not particularly small. It's pretty wide and long. It also goes through the register tube hole.

This doesn't mean that it has to be pinned, banned, or require any repair other than gluing. The only way to know is to glue it in a reliable way and see if it opens again.

I pin and/or band cracks when I consider this is necessary, but I almost always try glue only at first (including for cracks that are worse than this) and statistically most don't re-open with glue only, including ones that look terrible and worse than this one.

>> my original post was nothing more than a joke. <<

Sure, but it's entirely possible to repair that. If you know the material and there's a welding glue available, then it might be worth considering. I don't trust this because unless you've tried a specific glue on a specific material then you can't really know for sure what the material is (and it could be very similar to something but slightly different).

Any glue like epoxy etc. can hold if you are very careful, but not good enough to guarantee the repair as far as I'm concerned.

The two main methods are a graft or pinning. I prefer the latter when possible because it's faster, less expensive, with no down side (just as strong). You use length-wise pins between the parts along with glue, which both adds support and increases the contact area of the glue by a lot. A graft is done when the break is too scattered to save.

I don't have the best photo but attached example of a repair that involves a graft with reinforcement pins (so pretty much both methods at the same time).

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