Chipped or a fault in the jar?
Just noticed this on the rim of my kilner jar. I haven't dropped it. Worst I've done is tap the spoon in the side. Have I chipped it or is it a design fault? Can a kilner jar chip easily without me knowing?
Have a starter in it.
but it could be a flaw in the glaze. Does it feel rough?
But I think it is a flaw in the glass. It's quite new and only used it once for a levain build. Could have been there already and I'm still ok. I'll be vigilant with my next build.
Don’t know what caused it.
Can you sand the rim with sandpaper?
It's thick glass. Don't think it can be sandpapered. Don't mind it being there as long as I know little chips haven't gone into the starter I'm going to make bread with.
is this ceramic?
If you're a spoon tapper, use a spoon or spatula with a handle that won't chip the glass. Something like silicone or wood to stir instead. If this is a glass jar, looks like fractures in the glass.
Could be a flaw or a fracture inside the glass although it does feel a bit rough.
It's only the second time I've used it and just noticed it. Could have been there all along. I'm doing another build before I make bread with the starter and I'm only using 24g of the starter for the final feed. It is a low hydration starter so i'll be careful and check it thoroughly before feeding again. Perhaps I'm being too fussy.
Thanks for the advice and i'll be careful not to do that again. It is quite thick glass and I thought it'd never chip.
is in the mold. As the hot glass is pressed into the mold, it takes on any imperfections in the mold , molds which wear out over time especially by sharp edges and corners. If the imperfections go into the surface, then the glass is damaged.
If raised and you have a Dremel grinder you can grind and buff it off if raised, you cannot take it off perfectly because of the process, but scratching the surface may weaken the tempered surface. I would advise not messing with it if you don't have to.