I’ve got a rip off of a multitool mounted to one of my bench grinders. I’m sure its a rip off because the price was too low and I had to spend hours aligning the pulleys and fixing the run out. The proper Australian-made one wouldn’t have had these problems (I’m hoping)…
Anyways, the 6″ grinding wheels are good for small jobs, but no good for grinding larger drill bits. As per my page on sharpening drill bits, a linishing belt is another way of doing the job.
However, the stock mounting angle of the multitool is not really usefull, so it needs to be rotated around so the belt can be used vertically, like this:
|Rotating the multitool so the belt can be used vertically|
But, then the belt running plate is on the back side, and on the front side there is no support for the belt. So we need to fabricate a support for the belt. There is a small guard that bolts to the frame that is a good place to mount the belt guide:
|Mocking up a new belt guide plate|
Pretty easy, eh? I looked in the scrap box and found some 2mm plate and cut a piece 60mm x 190mm as shown above.
|Mounting holes drilled and relief slot filed|
|Checking where the bend would have to be located|
Then I just put it in the vice, and cranked it over. It took a few minutes to get the angle correct but the whole project was only 15 minutes.
Here is it ready to go:
|Ready to run|
And with the belt re-fitted: