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Harold Hall's precision grinding table

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xo18thfa:
Hi Wong.  Go with steel for the table top.  The attachments sliding around will wear out aluminum quickly, and make a lot of friction as it scratches up.  There is no tricky machine work on the table top.  I think brass dovetails will work.  Brass is easier to machine.  My mill/drill chattered some when cutting them in steel.  The angle bracket at the bottom could be steel too, or extra heavy thick aluminum.  That part needs to be very rigid.  Aluminum for the rest should work out.  Mr Hall's plans are metric, if you are using inch, round up all the material thicknesses to make the table a bit more "beefy"  A little extra stout will help.

I use the grinding table a lot.  It is a really big help.

Bob

wongster:
Thanks Bob.  I'm more comfortable with metric.  So his plan is perfect for me  :D

I've ordered the 25mm plastic ball with M6 threads from RDG Tools.  Ordered 2 just in case I screw up.  The tapped holes beneath the table look challenging.  Should I go with thickness of 8mm to make drill/tappping them easier?

Regards,
Wong

Anzaniste:

Wong
Hi, I've just come back to this and I agree with Bob.
Andy

wongster:
Hi Andy,

Are you making the same one as Bob or the simpler version that Roy showed in his pic?

Regards,
Wong

Chuck in E. TN:
Just ordered the book. Following this thread closely.

Chuck in E. TN

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