Lids Buckled up during processing

Billie says:  Help!! Did a double stack canner of pint green beans. I can tell for sure 3 of the top ones the Lid is buckled UP on one side .....??????

Answer:
When buckled lids appear to warp or bulge upward under the screw bands.
There are several causes:
1:  Buckling that is apparent immediately after heat processing is caused by application of the screw bands too tightly. Two-piece home canning lids are made in two pieces for a very important reason: To release pressure and vent air from the jar during heat processing.
As the filled jar is heated, headspace pressure increases until excess air is vented from the jar. When the band is applied too tightly, there is no way for air to be exhausted from the jar. Consequently, the pressure build-up warps the lids and disrupts the seal formation

2:  If you boil the lids and soften the seal too much it may cause you to get a premature seal.

3:  If they bulge later on the shelf, it could be that the food has spoiled due to being processed wrong or for the wrong length of timeand gases have formed in the jars either warping the lid or breaking the seal.

Preparing Jars

Question:
Do I need to sterilize my jars before putting the food into them?

Answer:
Not always.  If your recipe is being processed for more than 10 minutes then you don't have to sterilize the jars.  The canner will do that during processing.  Your jars do need to be kept hot until you are ready to fill them to avoid jar breakage.  Putting hot food into cold jars can cause the jars to break.  I wash my jars in hot, soapy water and keep them in my canner and keep it simmering until I am ready for them.  If you prefer, you can run them through a cycle on your dishwasher and they will stay hot there until you are ready to fill them. 

Jars Fall Over

Tidbit:  What to do if you don't have a full canner load.

• Fill jars with water.
• Cap with old lids and rings.
• Use to fill the empty space to keep your jars from falling over during processing.