I am currently researching fillers which may be added to our abrasive bonded products to induce porosity.
I have come across walnut shells being used for this purpose. I have tried to find a supplier but so far have only turned up suppliers based in the US.
I would prefer to find a European based supplier or one with sales offices within Europe.
I would appreciate any help in tracking down suppliers for this product.
I am also aware that bubbled alumina can be used for this purpose. I have tracked down a couple of European suppliers of this product but would also appreciate any additional help with this.