On 02/11/2013 03:20 AM, andyf1108 wrote:
I don't know, John.
I can produce no authority for this, but I imagine that bronze might be the best material for feedscrew nuts. Mine was originally cast iron, but as a result of certain "unintended consequences" of remachining my saddle dovetail I replaced it with one of the brass ones you kindly made and included when returning the tap, and that works just fine.
But if bronze is good for feedscrews, why not bronze half nuts on leadscrews?
Returning to G's original query, it has been suggested that he uses the adjustment which reduces backlash by rocking the feedscrew nut slightly. If his cross slide was stiff throughout its travel, that might help, but it only stiffens up at the outward end. That makes me think the cause probably lies elsewhere; hence the suggestions I put forward earlier.
Andy
I haven't looked at that nut in a long time (since I drilled the recess
into it so it seats better) but is there room to put in a DIY acetyl
nut? The type you form to your particular leadscrew?
--
Jerry Durand, Durand Interstellar, Inc. www.interstellar.com
tel: +1 408 356-3886, USA toll free: 1 866 356-3886
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