Concrete Countertops

[f350ca]

A little progress today.
Setting up to weld the pivot that the grinding head will move up and down and sideways on, needed to be square and level.



Boring the pivot to fit the pipe we machined yesterday, gave it 5 thou clearance.



A mock up of how the diamond wheel will be mounted, the shaft and bearing housing is liberated from a tile saw (no need to reinvent the wheel). I'll machine a sleeve to fit over the bearing housing to give a fine height adjustment. A 2 hp electric motor will mount behind the pivot to balance the weight so I get some feel of the grinding pressure.
Takes the full of a 2 hp motor to spin that wheel at 5000 rpm, tried a 3/4 hp one before, it would stall as soon as the wheel touched the concrete.



All for today
Greg