On 10/10/2017 12:46, John Rumm wrote:
On 09/10/2017 19:53, Lobster wrote:

Just received my weekly AldiMail, and spotted a couple of bench grinders
coming in.
I do already have a small bench grinder, but could really do with
something
that would grind wood chisel and plane blades.* I notice that one of
these
Aldi items (the "Wet and Dry Bench Grinder") is depicted with a chisel
next
to it, suggesting it might fit the bill?
https://www.aldi.co.uk/workzone-wet-...95057174724501

(My current machine has two grinding wheels, which both look like the
right-hand one on the Aldi machine - it's the left-hand wheel which is
presumably of interest.

Yup, the slower speed and the water bath means its much easier to
control both the rate of grinding, and also prevent unwanted heat build
up in the tool.

Note that the stone on that is 120 grit which is quite coarse - it will
establish a primary bevel quickly, but won't give a particularly refined
edge. You could solve this by either doing a quick manual sharpen on a
fine stone after, or by getting a "stone grader", that you can apply to
the wet stone on the grinder for a few seconds to give it a (temporary)
fine grit for the final stages of grinding. e.g.

https://www.screwfix.com/p/triton-stone-grader/5801R


Not come across them before. Here is a bit more of an explanation

http://www.axminster.co.uk/tormek-sp...-grader-910080

I wonder whether any generic two-sided stone would work. I say that
because I have an old one in my grindstone drawer that I never use.