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Harold Hall's precision grinding table
wongster:
Hi Chuck,
Would you be able to post your machining and construction pics when you are building this? I'll be building one when I finished the 2 jobs on hand.
Thank you.
Regards,
Wong
Chuck in E. TN:
Well, I went back and re-read HH's assembly instructions and figured out the assembly of the lead screws.
Wongster, I'll be glad to take pictures. Haven't taken many yet, I'll get on that today.
Chuck in E. TN
Chuck in E. TN:
I have posted pics of my progress so far:
http://s571.photobucket.com/albums/ss157/chucketn/Machining/HH%20Grinding%20table/
I don't yet have a dovetail cutter, but have one on order. I have been substituting dimensional metal for what I have in my junk box, and adjusting dimensions as I go. The leadscrews are just 10-24 screws as I have more imperial taps than metric. I only have 2 major parts left to make, the table itself, and the top slide.
I have simplified as much as I can, and probably won't make the fancy locking handles. I simplified the locking screws to bolts with a washer to fit the slots, and loctited them together. I may change my mind later and make the locking screws as HH did. I still have some tuning to do such as rounding the ends of the side arms.
Any comments/suggestions welcome.
I have enjoyed the challenge of this project, and learned a lot in spite of myself! So far, I've burned a couple of cutters, broke one center drill, and spent money on stock that was the wrong size, but still learning a lot.
Chuck in E. TN
Bernd:
Lookin' good Chuck. :thumbup:
I'll be building one of those after a couple of projects for two other people and the Shay has all the truck parts made. So it looks likeit'll be well into this years cold season. :coffee:
Bernd
Chuck in E. TN:
I realize some of the questions I've asked on this build were obvious, but I couldn't see the forrest for the trees. I did convert stock sizes from metric to imperial, but that was an exercise in futility. I have digital calipers and a DRO on the mill. I ended up machining to the metric dimentions most of the time.
I did substitute imperial fasteners as the only metric tap I have is 6mm for the lathe. I ended up cutting most of the parts from larger stock.
So, I'm getting more comfortable with going back and forth from metric to imperial, and my machining abilities are improving. I need to work on learning speeds and feeds as I burned up most of my mill cutters. Motivation to build the milling cutter sharpening jig, huh!
All in all a fun project that taught me a lot. Lathe tool jig, first, drill jig next.
Chuck in E. TN
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