Having encountered problems with the old unit (bearing failures) it was decided to replace it with a new, more robust unit from Record Power
Dust extraction on the new sander is much improved with the unit hooked up to a dust collector.
Having already had a fair bit of use, this one seems to be holding up well.
Bench Grinder for Sharpening Lathe Tools
A key factor in the success of woodturning is in having sharp tools
With this in mind we have refurbished an 8-inch bench grinder with one 180 grit CBN (cubic boron nitride) wheel and one "white" oxide wheel.
The CBN wheel is for use with modern HSS (high speed steel) tools. Older carbon steel tools should only be sharpened on the white wheel.
Showers of orange sparks indicate carbon steel......by comparison, HSS produces very few sparks of a more light yellow appearance.
....and on the subject of sparks, please don't put bags of shavings under the grinder - this is a fire hazard just waiting to happen!!!
The 8-inch wheel diameter will result in a flatter (less concave) grind on tools compared to 6-inch wheels.
The tool rest can be moved to either wheel as can the grinding jig for sharpening swept back / fingernail grinds on gouges.
We can purchase a second tool rest if required.
Face shields and safety goggles are provided and your trustees strongly recommend that they are used at all times when operating the grinder, the polishing mops and especially the wire brush wheels
To maintain the integrity of the new grinding wheels, it is preferable that refurbishing old bench chisels, plane blades etc is done on the old 6-inch grinder