SJ-250 Stone cracking on edges

[Mewsikman]

Hello all,

This is my first post on here. I've owned the Tormek T8 for well over a year now, I bought it originally for touching up HSS lathe cutters with the SB-250 wheel and on the odd occasion sharpening chisels with the SG-250. I treated myself to the SJ-250 a couple of months back and have been very impressed with the results that stone produces, yesterday whilst I was sharpening a set of chisel for a neighbour, I noticed there was cracks appearing running in the rotation direction on the edges of the stone. These are very deep, it's almost like it's de-laminating.  I've tried re truing the wheel to cut out these cracks but they keep reappearing. Any suggestions as to what it might be?

Thank you in advance

Alex

[Mewsikman]

Another photo of the other side

[Twisted Trees]

Hi Alex,

My first thought on looking those pictures is that shouldn't happen, take it back to the dealer!

Immediately followed by Ken will have a better answer to this when he comes online, which he will. but you can help him shape that answer by giving your country and possibly area / state of that country, and where you bought the stone i.e. dealer or online.

TT

[Ken S]

Alex, Twisted Trees reads my thoughts well. Since you have already tried truing your wheel with no success, I would either return it to the dealer or contact support. I believe grinding wheels have the Tormek two year accessory warranty. Most dealers handle multiple brands. Tormek support handles only Tormek. If your dealer will swap your wheel for a new one, I would contact the dealer. You will want to establish a good working long term relationship with your Tormek dealer. Hopefully your dealer will do right.
Please let us know how this is resolved.
Ken