[Closed] STW home brewers - why are my caps leaking?

Are you reusing bottles from commercial beers ? If so what brewery/beer as some bottles aren't suitable.

What type of capper are you using ?

Have you put some sugar in the bottles for second fermentation?

Mixture of reused mainstream ale and cider 500ml bottles. Cheap manual capper and standard homebrew caps. I never add sugar as previous homebrews in ptfe pop bottles always gasses just enough for me and I don't get excessive sediment.

Probably a priming sugar issue rather than a leak.

I use Coopers Carb Drops, one drop per pint bottle at bottling time, works a treat.

http://www.tesco.com/direct/coopers-carbonation-drops/213-3925.prd

Ok
Warm one bottle up for a week in the airing cupboard , or between 24 - 28'C . If it goes fizzy then its a temp issue.
Might be dead yeast , not enough yeast .
Could be you are all out of Maltose and the remaining sugars are harder for the yeast to metobolise.
Could be your crowner is set too light and they really are leaking ,

I reckon lack of priming sugar and/or not enough time in the bottle

I use 1/2 tsp of dextrose per bottle, using cook's measuring spoons.

Or 80-120g of the stuff per 23litre batch in the fermenter a day before bottling. You can make a syrup using the dextrose and some boiling water but please let it cool down to room temp before you add it to the beer before bottling. More priming sugar = more lively beer. Best open it over a sink 😉

I also use [i]at least[/i] one PET bottle in every batch so I know when it's carbonated. When you fill the bottle,you can squish it. When it's rock hard, it's carbonated. Coopers Brewery do PET bottles, 24 for about £12 in your average LHBS, but larger Tesco stores sometimes carry them at £9.50 a box

I give my bottles at least two weeks in the warm before moving somewhere cooler for a further 2 weeks

why are my caps leaking?