|Forum topic by forexpipz||posted 12-01-2011 08:13 PM||3141 views||0 times favorited||4 replies|
12-01-2011 08:13 PM
Hello everyone. My first post so here goes.
I have a 2000 watt 230mm grinder and have modified it as follows:
1 With the grinder still in the plastic box I have cut an opening where the grinding disc is situated. This allows the disc to protrude approximately 2.5 ” outside of the box when the box is placed on a plane surface.
2 I have adhered using spray adhesive some Norton Extreme Green 120 grit sandpaper to both sides of a 3mm by 230mm grinding disc.
3 Cut holes in the box to prevent overheating.
Today I attempted my first grinding session with a few old chisels. Basically I placed some heavy 1” thick plywood parallel to the blade with lets say a 1mm gap. On top of the plywood I have a granite tile upon which my Richard Kell Number 3 mark 2 honing guide rides. I set the projection and proceeded to grind.
At first it was as scary as HELL. I pictured flying shards of disc in my head and imminent images of decapitation at the neck. This feeling soon disappeared when I realized that with very faint touches and coordinated control the Kell guide actually takes most of the decisions literally out of your hands and you are just thinking about lowering the blade onto the disc.
I plan to post some images and perhaps a video of this set-up in operation. At the moment the only downfall I can see is the noise of the grinder and perhaps the shattering of the disc which I think is unlikely given that the paper is adhered to both sides and the item being sharpened is only lightly placed upon it. Fingers cannot e trapped because the disc is fully co-planar with the plywood. Perhaps a overhead plastic guard would make this setup bulletproof. Also note that everything is clamped down.
Please advise me on any issues that may arise. So far heat build up as been virtually nothing. Warm to the touch. It seems the large plate on the Kell guide acts as a very capable heat sink. The motor never stresses and you can either touch down the chisel or plane iron anywhere on the disc or you can ride the guide back and forth. I have been using a combination of the two but I seem to prefer just touching down. Its very fast and very effective and seems to provide more control. Your comments would be greatly appreciated.