How do you fix hairline cracks in a basin?

[#1]

The cracks are a phenomenon called crazing. They are typically caused by thermal stress. This is when the ceramic material is exposed repeatedly to hot and cold temperatures. This happens under the glaze of the basin and that's why it still feels smooth to the touch. 

Because it's under the glaze there is no way to repair it, however, you can cover and recoat the basin with White Knight 500ml White Tub And Basin Paint. It dries to a tough, tile-like finish to restore previously discoloured surfaces.

Here is a handy step-by-step guide that you can follow: How to paint a bath. The technique used is applicable to painting a basin, too. Before painting, make sure that the surface is very well prepared so you get the best possible end result. 

I also encourage you to have your doors and windows open to provide good air circulation. And please make sure you are wearing personal protection such as gloves, goggles and a paint mask. - EricL 

[Bonnings]

Hi Experts of Bunnings

What's the finish like with the best tub and basin paint like? Will it have a smooth ceramic-like glazed appearance or will it look like paint? Will there be brush strokes or is the paint completely self-levelling?

Thanks

[EricL]

Hello @Bonnings 

Both products have excellent finishes, especially if you use a roller. The paint is self-levelling to a point, but if you are after a fine finish, I suggest investing in a paint sprayer. My best advice is to practice with ordinary paint first and painting perhaps part of your fence. This will help you familiarize yourself with the sprayer's settings and specialty functions.

If you need further assistance, please let us know.

Eric