Decided to build my own grinder. Almost done...

A.McPherson said:
Pretty wicked build man!
I'm in the process of collecting parts to build one as well. my plans were not nearly as grand as yours, you've got me inspired to step up my game!
any chance of getting a copy of your plans? I'd be willing to kick a few bucks your way of course...
pm me if you are interested!!
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Thanks for all of the kind words guys.

As for sharing the plans: it's something I've been asked about, and something I was thinking about as they were coming together. I'm still undecided on whether I want to do that just yet, for a number of reasons.
For one, other than a .dxf drawing and a parts list, there's really not much of a "plan" per say, and I'd want to put something a LOT more thorough together.
That said, I'm also crunching some numbers for POSSIBLY working on eventually doing a production run, though I can't really discuss the details here, per forum etiquette/rules, and to be honest, I don't really have them yet. Besides that, I'm gonna be testing the crap out of this grinder before I do anything, and I've already decided to modify/improve several aspects of the current prototype if I do a next one.

That's not to say won't end up just opting for plans vs production, but again... it's all still a work in progress. That's all I'll say for now. Stay tuned!
 
Andrew- amazing build man! Could you show of diagram how that tracking on off mechanism works
 
Such a cool build! nice job! may I ask if you had all the holes cut into the part at the same time that you had them cut?
 
Daniel Rohde said:
Such a cool build! nice job! may I ask if you had all the holes cut into the part at the same time that you had them cut?
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I did have about 90% of the holes either cut, or at the very least spotted via water jet, and that was the primary reason for spending a little extra on water jet cut parts, for the convenience and accuracy, and knowing that everything would line up when it was getting put together. I'm sure I could have done it all on the tools I have in the shop, but it would have taken exponentially longer with setups and still probably not come out quite as accurately or cleanly. I'd probably still be putting the thing together... hahah.

Now I did have to drill and tap all of the blind holes, or any through holes that were not accessible to the tool path of the water jet. Then I took care of any other tapping or counterboring, and had to re-machine a block for the over-cam assembly that I had previously had cut on water jet, because it wasn't quite working at its original dimensions like I thought it would.

Water jet or some other applicable CNC process is definitely the way to go, IMO.
 
Tin.Man said:
Andrew- amazing build man! Could you show of diagram how that tracking on off mechanism works
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You're probably referring to the over-center cam tension system? The tracking mechanism is much the same as almost any other grinder, in that it's just a pivoting block/bracket that the wheel mounts to.

The cam system really isn't much more complex. If you fast forward to about 6:25 in this video: https://www.youtube.com/watch?v=djWK49HdRHE it shows the inside and gives a little better idea of how it works. There's basically just a "paddle" that pivots with the machine handle. The bottom end has a pivot bolt that runs through the body of the grinder. It screws into the center of the machine handle. Just above that is a stop pin that also screws into the handle and goes through the paddle. It travels along some pre-cut arcs in the grinder body sides, and then at the top of the paddle is the pin for the cylinder eyelet/clevis.

If that doesn't make sense, I can see about making a video to better explain it next time I'm out in the shop.
 
Yeah I tried following that description and I appreciaye you taking the time to write it out but I'm lost haha a video would be amazing as im almost done with my grinder build but want something similar to yours for tracking.

Thank you so much.
 
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