I have about 60 off 155mm x 2mm cutting discs of the German 'Pferd' Horse Elastic Brand and they have been in the shed since 1990. They look quite sound and sound like crockery when pinged, but no ring. The resin is still very hard. Any thoughts on them being unsafe.....anyone ?
Whats the use by date on them? Dont use them if they are beyond their date, they do deteriorate, and make a real mes when they disintegrate.
You mean they make a mess of the operator, or just a lot of dust? I'm quite risk-averse, and I like the number of limbs and fingers I was born with. It's an even number.
In message <rdevb6$4bh$ snipped-for-privacy@dont-email.me, Smolley snipped-for-privacy@rest.uk writes
No views about your particular discs but suspect the date warnings might be health and safety overkill.
In 40 or so years, I have never had any disc fail (9", 5" and 4.5") other than through extreme misuse. Even then it was only the cutting edge shredding with any bits contained by the guard.
No obvious 'use by date' on box or discs:
80 EH 115-2 A 46 SG DSA Nr. 375 SUVA Nr. 282 KDM Nr. 37 80m/sec Max 13300 RPM
Mostly the former, but can be both - if they fail they tend to fly apart in fragments - and they might be doing ~180 mph.
Yup, I do wonder when I see people standing inline with the disc using grinders with the guard removed!
+1. Got my first angle grinder in about 1975.
The date could be stamped on the metal mounting hole. Info about disc markings:
Yeup -- but these are 2mm discs, though, and correspondingly more fragile.
To add information: about/over a quid a piece, "professional use/high performance " line. I'd expect this to be true, and not marketing, as Pferd is a reputable company. Best-before could be a dot-matrix year printed on the label
-- that's where it is on todays discs.
Seeing that these sheet-metal cutting discs go down to 0.8mm, and knowing how the tiny Dremel discs frag -- I'm more careful in using these than with a 1/4" thick wheel. And I try to assume they will fragment nastily, and try to stand and aim accordingly. I'd never use them without a guard.
Thomas Prufer
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