My wife dropped a cutting board in the sink today and we ended up with quite a large hole. I believe the sink is porcelain. This is not ideal as she was planning on doing a lot of holiday cooking. I’ve found a lot on repairing dents or small holes, but it’s unclear if those solutions would work for something this big. Is this repairable and if so how would I go about doing this? We’re fine if the color is a bit off.
I think for a temporary fix you could use a good two-part epoxy. I don't consider it a DIY thing to completely restore a sink like that, but there are companies that refresh bathtubs. I'm not sure what they apply would be robust enough for a sink, though.
From the look of the nearby chips and the crack extending from the new damage, that sink has served its useful life and should be replaced. That's usually not an overly complicated project and tends to bring new life to a kitchen workspace.
I would consider replacing the knocked out chunk into the hole, and using PL construction adhesive (comes in tubes from the hardware stores). It requires no mixing and a thinish layer will bond and be waterproof. It makes a strong bond.
If your chunk is mostly complete, you will have a sink that will likely be pretty strong.
Note that this is still a temporary fix (but you might be using it years from now if the color match does not bother you!)
Would love to hear comments about PL as the bonding agent- anyone tried this?