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| Should I or shouldn't I ? |
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| tekfab:
Decisions decisions, I'm about to make a new cross slide leadscrew and nut for my trusty old lathe and have hit a really trivial decision. The existing screw is 8tpi and therfore .125" per rev but I could make the new one 10tpi and therefore a much easier mathematical .100" per revolution. Okay I'd need to make a new 0- 100 graduated dial but that's the easy bit. Am I missing something important ? or am I doomed to a life of indecision . Mike |
| awemawson:
I'd go for 10 tpi personally. But also I'd buy the acme rod as it's pretty cheap, then fettle the ends to suit. Andrew |
| flutedchamber:
You should check the accuracy of the lead screw. For the cross slide most lathes are in the vicinity of an error of .001 per foot of lead screw. Look up "precision lead screw" or "precision acme screw". Most offered are in the .004 to .009 range, far to much inaccuracy for a cross slide. |
| Pete.:
Your facing feed rates will be reduced by 20% but that's no real biggie. |
| Meldonmech:
Modifying the lathe may devalue it, if at any time you want to sell it. Good luck whatever you decide Cheers David |
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