We have all thrown away board bags because, when we tries to free the salt jammed zipper with a pair of pliers, we trashed the zipper and rendered the thing useless. Garage is full of dead board bags. Fear not, there is a solution. It works - as unlikely as it sounds. I stumbled onto this solution when I accidently spilt some Bushman's Friend on the dinning room table only to find that it disolved the varnish and left a serious blemish. Truely a powerful solvent. Works with Airoguard as well. Just spray some Airoguard on the jammed zipper, wait a few moments and voila - zipper slides like a shop bought one.

Or hot water and vinegar
Pretty simple

Or as above and a squirt of WD40.
If you stuff it up with pliers its $2 for a new slider at a trim shop, cut a few teeth out and slide it back on.

What the hell is Bushmans Friend though?? If you mean the insect repellant it dissolves plastics so might be more likely to damage the zipper ...?

www.whitworths.com.au/fixnzip-zipper-repair-kit-large-8-10

yes yes.....bit pricy

I use parts oil or wd40. Whatever is closest.

Zips are over rated

www.bunnings.com.au/inox-300g-aerosol-lubricant-can_p6100723

Or... stop it from happening in the first place with Mr Sheen or silicon spray.

Can't fix mine, even tried brickies acid. Not happy.

... or buy bags with plastic zip sliders.

Never had a YKK zipper stick. Must be the bench mark for quality zippers. If I see these on a board bag or the like, I know it's going to be a decent product as they have obviously used good parts in it.

Have had plenty of other types of zippers get stuck though.

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girtsk said..
Truely a powerful solvent.

Gets you out of trouble "in a jam" ?

Another bush trick is to use fly spray to lubricate padlocks and door locks. I would only do this if I was out bush and had nothing else.