Whilst the state of the wheel's face is not critical do ensure that is parallel (visually)
with the front edge of the table ensuring that the 1-2° angle set by the rest is
replicated on the cutter, as I have already said a concave end is essential.
These need a slightly different approach as one cutting edge is longer than the other
and need to be plunged in use if making a closed end slot. First sharpen the two
edges as was done for and end mill. Then, set the device to a slightly greater angle
and the grind just the inner most section of the long cutting edge. This will create
a very slight bend in the overall cutting edge but will leave the cutter with its
tips still at the same level
With the rest made and used the cutters will be found to produced much superior results
when facing. Whether the cost saving in cutters warrants the time spent in its manufacture
only the reader can decide. It did take me around six hours but I have to take the
photographs and did some minor development during the time so the viewer should be
able to improve on this appreciably.
An alternative mounting
For the reader who cannot mount the rest off the grinder, or who wants to reduce
the time to make it Photograph 9 shows a crude but effective alternative. It will
avoid the need to make the support and to establish the dimensions for this and as
it can be made in no more than 10 minutes should also be a time saver. With a third
piece of timber added to the top, the table could then be made out of a flat piece
of steel rather than an angle.