On 5/2/23 08:56, andy pugh wrote:
On Tue, 2 May 2023 at 13:50, gene heskett <ghesk...@shentel.net> wrote:
have spent lots of time on the net, looking for more screws of that
size, 8mm I believe, but have come up empty.
Just search for "0802 ballscrew". They even sell them on Amazon.
https://www.amazon.com/Mssoomm-SFK0802-Ballscrew-Standard-Machining/dp/B0927L7ZQL
I even widened the search, but did not find a nut that matched these.
They were nominally 5/8" OD with external return tubes, no flange or
threads, just a bare cylinder with returns so I had to make cages for
the nuts which was fine because neither lathe had the clearance to pass
a flanged nut. Ideal for tight spaces such as the x feed on either
lathe. No room for swarf shielding on the 7x12, so x is gritty now, but
I shielded both screws on the sheldon, x by sealing up the whole screw
channel top and bottom, Z by twin bellows on the screw with the center
holes in the nut drilled thru so air can get thru the nut to equalize
pressure as it moves. No noise, moves like Casper the ghost with the 3
phase stepper/servo's.
I have been meaning to ask what size of wheel and grit is used to grind
the valley in the top of an hss cutoff blade like Jon mentioned in a
recent thread?
Thanks Andy, now I know what to search for.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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