Had the WD from H & Workshop with genuineWD40 sprayer thrown in, absolutely B****y useless and have tried others with the same result and now use old RTD bottle with FINE tube fitted. MAGIC

Try the Wurth ones.

Done something similar to Bernard.  When used as a cutting fluid, it saves spraying (and wasting) WD40 where it’s not needed, and is of course is more accurate for say, putting in a drilled hole.

In my experience the official WD40 sprayers that come with one gallon / 5 litre bottles outlast the contents of the bottles.

I’m up to 4 now, one in the garage and one in the workshop with WD40 inside, one for diluted Rocol Ultracut synthetic coolant and one unused in stock for when one of the others goes down. I’m about halfway down my current 5 litre bottle so it will probably be best part of 2 years before another bottle and sprayer arrive.

Clive

Been using the same wd40 spray bottle that came free with 5ltr container for last 4 years or so with no problems. A mate uses a surface cleaner spray bottle and that seems to work ok.

The clue is in the name, “WD” – Water Dispersant.

Despite its own label claims its use as a lubricant is minimal (in fact it washes out existing lubricant), and the little anti-corrosion protection it gives is short-lived.

I suspect a lot of the “large quantities” is due simply to using sprays that cannot avoid wasting a lot of it per dose – most of it when the object is small!

It is often better to use a brush for treating small areas.

Search hairdressing spray bottle on ebay , i bought a pack of 6 and they have been great.

On 29 August 2024 at 12:25 Bo’sun Said:

Agree with Graham.  That was the essence of my earlier post.  Unless of course we’re missing something?

Yes, something has been missed!   It’s that WD40 is a convenient multi-purpose liquid, handy for several different jobs.

I first used it to dry out car ignition leads : a common problem in the good old days!  It’s also a good cleaner, dissolving grease, oil, tar and many glues.  Cleaning and drying both involve largish quantities, where a spray makes sense.

The liquid is also a moderately effective penetrating oil and short-lived lubricant, plus it does a good job as a cutting fluid, especially Aluminium.  Much smaller quantities are needed, and spraying isn’t clever.

Although WD40 is noticeably inferior to specialist products it does a reasonably good job on several workshop tasks and is unlikely to damage anything.   Same can’t be said of using specialist products for other than their intended purpose!    Spraying cutting fluid on a damp car engine is unlikely to help, and glue remover is a rotten penetrating oil!

Dave

On 30 August 2024 at 21:22 bernard towers Said:

And using a spray bottle of WD40 on a lathe is asking for trouble as its oil removal capabilities soon show up with a lathe bed/crosslide etc with no sideway on it hence the use of a drip feed bottle.

Don’t know about anyone else but I always clean and re-oil my ways after every use. SO the wd40 I use on aluminium as a cutting lubricant is no trouble at all.

I’ve found empty supermarket spray bottles of various cleaning products to be far better than the empty ones they sell in Garden Centres, which seem to be designed to fail?! Sadly some don’t have screw tops so refilling is difficult.

On 2 September 2024 at 08:23 Bo’sun Said:

On 1 September 2024 at 20:05 Vic Said:

I’ve found empty supermarket spray bottles of various cleaning products to be far better than the empty ones they sell in Garden Centres, which seem to be designed to fail?! Sadly some don’t have screw tops so refilling is difficult.

 

“CIF” kitchen and bathroom spray bottles have screw tops to facilitate refiling with their concentrated refills.

Yes, I noticed some while ago a few bottles are designed to be refilled. I do seek out products that have screw tops just in case I need a sprayer. Most of them tend to be cheaper supermarket own brands.