Blown glass is really robust!
Especially when chunky, like I’ve designed these wares to be. To give them the best chance at long life, please remember that extreme temperatures are not their friend.
They’ll happily hold an iced beverage, and will withstand heat to a high degree, as long as it’s evenly distributed.
Did you realise just how HOT those common tea light candles get at the base, as the candle burns down? Beware!
My recommendation is to use pure soy or bees wax candles, with no metal wrapper. To clean the excess wax out after use, you can give the glass an immersive bath in not quite boiling water to release the residue.
If tea lights are your preferred choice, then float the candle in a little water before lighting. This disperses the heat, so you won’t stress (and potentially even crack) the base of your vessel.
Bumps and knocks happen
But if glass hits glass, concrete or stone with too much force, you may notice a tiny “bruise” appear on the glass at the impact point. This very small surface fracture is not a problem, just a scar that will not wipe away.
Of course, big drops from tabletop level may be fatal if the floor is concrete, tile or stone! But my kids have certainly tested out my wares over the years, and they do okay in almost all accidental scenarios.
Use a clean cotton or microfibre cloth to wipe excess oils from handling from the surface. Lightly spray first with a gentle “universal cleaner” type product. For heavily soiled surfaces I’ve had streak-free success with eco dishwashing liquid or a capful of sugar soap in a sink full of warm water, cold rinsed and polished dry. From experience: It pays to remove jewellery when handling to prevent scratches.