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i'll soon be making swarf
dbvandy:
--- Quote from: andyf on March 02, 2011, 07:32:42 AM ---
Let me know when you break the 20T one :)
Andy
--- End quote ---
funny... my 20t is metal. I used it as a model for the webster small gear...
Doug
Gazz292:
there are 2 x 20t gears, but in mine they are changegears, i presume for running the leadscrew whilst turning, as opposed to threading, and they have a smaller bore and a keyway, so i couldent use them as tumbler gears... not that it'd have helped me, as i needed another 5 teeth,
i suppose i could have bored the hole out, then cut 5 teeth off one of the steel changegears, and glued them on the other one i just bored out.. erm :scratch: :loco:
andyf:
--- Quote from: gazz on March 03, 2011, 06:17:04 PM ---i suppose i could have bored the hole out, then cut 5 teeth off one of the steel changegears, and glued them on the other one i just bored out.. erm :scratch: :loco:
--- End quote ---
That would be doing it the hard way. Easier to knock every sixth tooth off a 30T :)
BTW, this guide from LMS may be helpful: http://littlemachineshop.com/Info/MiniLatheUsersGuide.pdf . For example, it shows the changewheel setup for turning on page 25, and describes it on p26. LMS also has a calculator for the geartrains required for threading various pitches, including "nearly correct" inch threads with a metric leadscrew and vice versa: http://littlemachineshop.com/Reference/change_gears.php .
Andy
dickda1:
Most of the gears for that lathe are zinc die cast I believe. Having a sacrificial nylon gear in the gear train is a big advantage - break something cheap. Most of us over the years have run the carriage into the head stock or spinning chuck. Almost cannot live through this hobby without this experience.
You could generate your own gears with a gear hob - could be built only with a small lathe.
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