Abrasive expiry dates?

[Farside]

I like the idea that you still used them to get your 10 seconds worth, that’s what I would do

No point in wasting them.

 

[zeppelin builder]

got some rasta inox "the green ones and pferd horse that will be around 30 years old and they perform better than some of the spurious new ones

 

[brightspark]

i used a 7 inch grinding disk that had dropped in hypoy 90 gear oil and had it 25 years had to use it as i had no more / apart from the horible stink of the burnt oil smoke it lasted rather well

 

[8ob]

Almost need to calender a spread sheet these days to keep track of workshop consumables that perish if you want to avoid that " O Feck" moment, glues, gasket goo, masking tape, cutting/grinding discs, exhaust paste,paints and many others time out.

Bob

 

[Stupoty]

Yes. Use by dates of grinding discs are usually marked on the metal ring in the centre.

I had a discussion with a supplier about this and they told me they were manufacture dates.


Stu

 

[AdventuresInMetal]

I had a discussion with a supplier about this and they told me they were manufacture dates.


Stu

That's incredible! all of mine are made in the Future

 

[Stupoty]

That's incredible! all of mine are made in the Future

Thats interesting , maybe it's a per brand thing , my info was from a Klingspor rep. Use the 9" discs a lot and the newest date I've seen on a fresh box of discs (stamped on the metal) was 6 months past.

Stu

 

[AdventuresInMetal]

A few examples easily to hand:

Klingspor 2024

Tyrolit 2025

Screwfix, Purchased in 2004 Expired 2007

I use quite a few different manufactures and never seen one stamped as a manufactured date? You sure your rep isn't dumping old stock on you?

 

[brightspark]

its quite laughable people wont buy or use disks and bench grinding wheels if out of date but have grinders still with the same wheels from 19 30 s. i have a few

 

[Munkul]

I use quite a few different manufactures and never seen one stamped as a manufactured date? You sure your rep isn't dumping old stock on you?

Thats what it sounds like to me as well... Its been an expiry date for decades, pretty standard stuff. Also called validity, sometimes has a V stamped next to the date.
Just had a look through my grinding discs and found one stamped 2006...maybe time to let go of that one! I don't use old discs any more because modern cubitron ones are wayyy better.

 

[Stupoty]

A few examples easily to hand:

Klingspor 2024
View attachment 413663




I use quite a few different manufactures and never seen one stamped as a manufactured date? You sure your rep isn't dumping old stock on you?

It was a product rep from Klingspor(edit - he probably ment the batch date on the box though) , maybe I will give him a call on monday
From memory the dates matched the stamp on the boxes, although I've just had a look at my phone photos and think the box says 2022 whilst the metal is stamped 2025.

Two different suppliers so not sure if the box photo is the same.

Thanks for taking the time to show me

One of the suppliers has definitely been sending old ones then.

Stu