Welcome to the Bunnings Workshop community. Thank you for joining us and sharing your question about your hand basin and shower tray.
If the cracks in your basin and shower tray are very fine I suggest using the PC-11 56g White Epoxy Paste. It is a marine grade epoxy paste that can be used in wet areas and dries white. It has a 35 minute working time before it starts to set. You can use a Pro Renovator 38mm Plastic Scraper to spread the paste and cover the chips and cracks .
Due to the age and wear on your basin and tray, I can't guarantee a colour match. Would it be possible for you to post a photo of the basin and shower tray to give us an idea of the type of cracks and chips involved? This will then give us a better understanding of the damage and offer you other solutions.
Please keep us updated, we look forward to seeing the photos.
Thanks for the tag @EricL . This is not a repair that I have attempted, so I recommend going with EricL's suggestions.
Hi Eric, I haven't done this yet or purchased the products, I did upload the photos I think?
I'm sorry, but I've not seen any photos posted lately. However, if you are having trouble posting the photos you can send them to firstname.lastname@example.org. As soon as we see the photos we can then determine the condition of your tray and make a comprehensive recommendation.
We look forward to seeing your photos.
@EricL will be back on the site after the weekend, and I trust he will be keen to continue the discussion with you. As per Eric's advice, you could use the putty to fill the chips. That "white" will actually turn out a greyish colour, and your chips will still be noticeable, so you'll likely have to touch those repairs up with some white epoxy enamel paint.
Your second image shows crazing to the glaze, which are very fine crack lines. I don't believe you'll be able to fill those necessarily. As mentioned, that putty is grey, and even if you could fill them, I don't think you'll see much of an improvement.
You might like to consider painting the basin with White Knight 500ml White Tub And Basin Paint. I've used this product in my basin and bathtub and was impressed with the results. My bathtub and basin were pink, and it covered that very well. After around three years, it's still in great condition.