Homebase All Purpose Silicone

There were always two type of silicone, one which was odour free, and the other which gave off acetic acid which is also very corrosive. I presume you have the former, which at one time was far more expensive than the latter.

Does it smell of vinegar?

I know the smell you mean but while this does have some odour it is not the vinegary smell.

In article , Usenet Nutter writes

I have used neutral cure silicone and it set in a similar time to acetoxy cure (vinegar smell) stuff. I did have a number of tubes that had gone off partially in the tube and the consistency wasn't right so perhaps that is what has happened with yours.

I'd say give it a bit longer before giving up on it then take back the empty tubes and beat them over the head with them.

I think you did the right thing using neutral cure on acrylic sheet as I'm not sure how it would react you vinegar (acid) given off in acetoxy cure.

Here in the US tubes are dated, look for a date code. If its at the code expiration date it may never cure. If its a birth code 6 months is the oldest you should consider. Buy from a store with big turnover in stock for fresh product. If you call the manufacurer the first thing they will ask you for is the date imprinted, call them to find out what you bought. Ive bought many worthless tube products over the years, its a headache.

I'm not suprized. Homebase products are usually s**te.

Expensive s**te at that.

Not as bad as Focus....