I've been noodling this one for a long time (OK, sometimes I'm a bit slow), and this is what I came up with...........
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The old wheel will be filled with concrete, for weight, I don not expect to move it around much, so tilting it and rolling it on the wheel should be fine.
This is just the "Mock Up" stage, I've got some welding yet to do at this point in the build, but I wanted to see how it would "Balance" on the post.
I use the slow speed grinder, for sharpening my turning tools, among other things, and the older Delta high speed grinder for my brown Tripoli buffing and for honing on the MDF disk.
Let me make one thing very clear, with the MDF honing disk, the disk has to be traveling up, away from you, the exact opposite of a normal grinder, that is why it is mounted the way it is.
OK, on to the next phase.......
I welded up this frame to go under the grinders platform, I'll screw into the platform from underneath.
here is everything mounted up, good and solid.
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The vertical piece that the rear honing/buffing motor is mounted on, is screwed and glued the base platform, but I figured it would be better to also put some brackets on it, so I put these pieces of angle iron on, to make sure nothing can shake on me.
I tired it out, and I really like it, it gives me better access to the grinder for sharpening turning tools, but while it is not really "Top Heavy", it is quite stable, but, I'll still fill the wheel with concrete. I also expect to build a couple of small drawers under each side for the sundry things you need/want around a grinder.
Well, how'd I do.....