Dust, Dust, Dust and Fire!

["moonsong" <moonsong@zzzzzzzzzzzzzzz>]

John,

Good point about the motor overload caused by dust. I killed my first motor
under warranty because I didn't want the extra expense of dust bags. Now, I
regularly change the filter bags as well as completely blowing out the motor
with compressed air.

The diamond shaper I use (from Castle Tools Tyrolit) is like the one
pictured here:

http://www.tyrolit.com/com/products/trade/construction_trade/dry_grinding_discs.html

I don't use the dust extraction with the shaper unless it is a floor or wall
surface- edges and detailed work don't produce enough dust to worry,
usually. Just the respirator, earmuffs and goggles are enough protection.
I use a 4" wheel with an M14 (mild steel, 14mm) thread so it fits on a 5"
grinder (heavier construction).

You may get one (if you are in North America) from:
http://www.granitecitytool.com/stone-tool.cfm?itemnum=119&catnum=0

This tool is great for grinding tool marks preparatory to honing &
polishing. I use a coarse diamond shaper (60 grit) followed by a medium
diamond shaper (120 grit) then move on to 120, 220 carborundum stones
followed by 220, 400, 800, 1500, 3000 velcro pads and finally a camel-hair
buff pad with tin oxide coloured with black oxide. Depending on the state of
the stone at the beginning and the type of granite, some of these steps can
be skipped.

Working on-site (polishing an installation), the diamond shapers and
carborundum stones are used dry, the velcro diamonds and buff pads are used
with a minimum of water.

Simon