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Thread: Lever feed mini lathe tailstock

  1. #1
    Supporting Member threesixesinarow's Avatar
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    threesixesinarow's Tools

    Lever feed mini lathe tailstock

    I fixed the original tailstock for my 7x10. Since it’s now extra I made it so it only has a lever to advance tools, similar to tailstocks on many small old plain bench lathes, but mostly it combines features from specialized tailstocks for Myford, South Bend, Schaublin and Boley.

    The regular tailstock I had replaced it with is designed to be fitted with a similar lever feed, but the feed screw and bearing hub have to be removed from it first - that’s not difficult but needs a little planning and somewhere to put the parts - I figured mini lathe parts are so light weight it’s easier just to switch between two tailstocks.

    I’ve reused the standard old base and main casting, but modified the base slightly to improve how it seats, and cut the ends off the cylinder part of the casting and replaced them with bolted on new pieces with bosses for adjusting screws. The barrel is new and a little bigger than the original to fit the casting that I rebored between centers in place on the lathe.

    It’s less versatile - and harder to make - than retrofit designs like John Stevenson’s and Maszynotwór’s, which retain the regular screw feed as well as the barrel. It’s also less sensitive and takes more space than rack feed ones like Martin Cleeve’s and Stefan Gotteswinter’s.

    It works okay, though, and even fully extended seems to be more secure than it ever was before.

    The new barrel is 22.5mm diameter and takes ER-16 collets, as well as some M22-1.5 threaded chucks and accessories I have. Maximum travel is about 5”.

    Lever feed mini lathe tailstock-01lt_frontoblique_l.jpg Lever feed mini lathe tailstock-02lt_drillchuck_l.jpg

    Lever feed mini lathe tailstock-03lt_base_p.jpg Lever feed mini lathe tailstock-04lt_boresurface_p.jpg

    Milled an angle on the rear face of the base register with extra screws and matching brass plugs in the main casting, and rebored that using a shear cutter ground from a broken carbide circuit board drill bit

    Lever feed mini lathe tailstock-05lt_betweencentersboring_l.jpg Lever feed mini lathe tailstock-06lt_lever_l.jpg

    Lever feed mini lathe tailstock-07lt_710levertailstockdrawing_l.jpg Lever feed mini lathe tailstock-08lt_710levertailstockleverdrawing_l.jpg

    Lever feed mini lathe tailstock-09lt_myforddrawing_l.jpg

    Myford Super 7 lever feed
    Last edited by threesixesinarow; 04-13-2019 at 12:54 PM.

  2. The Following 3 Users Say Thank You to threesixesinarow For This Useful Post:

    Jon (04-13-2019), old_toolmaker (04-14-2019), rossbotics (04-14-2019)

  3. #2
    Supporting Member old_toolmaker's Avatar
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    old_toolmaker's Tools
    threesixesinarow,

    Nice work on your mini lathe lever feed tailstock. Thank you for sharing with us! I have never been a fan of screw driven lathe tail stocks. They take too much time and effort to crank in and out, although they do give precise control of feed.
    Dick


    Links to some of my plans:

    http://www.homemadetools.net/forum/f...6068#post65876 OFF-SET TAILSTOCK CENTER PLANS
    http://www.homemadetools.net/forum/s...995#post112113 SMALL TURRET TOOL POST PLANS
    http://www.homemadetools.net/forum/l...994#post112111 LARGE TURRET TOOL POST PLANS
    http://www.homemadetools.net/forum/m...383#post110340 MINI-LATHE CARRIAGE LOCK PLANS
    http://www.homemadetools.net/forum/s...191#post106483 SMALL QC TOOL POST PLANS
    http://www.homemadetools.net/forum/q...849#post119345 QUICK CHANGE LATHE TURRET
    http://www.homemadetools.net/forum/m...949#post119893 MINI LATHE COMPOUND PIVOT MODIFICATION

  4. #3
    Supporting Member rossbotics's Avatar
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    rossbotics's Tools
    Great attachment threesixinarow
    I'm like Dick, never been fond of a screw driven tailstock, that should speed things up a bit now, good job on the attachment

    Doug
    Comments are always welcome
    Doug

    Subscribe to my you tube channel

    https://www.youtube.com/channel/UCDD..._as=subscriber



    Tool Plans for Sale by rossbotics






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    old_toolmaker (04-15-2019)

  6. #4
    Supporting Member threesixesinarow's Avatar
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    threesixesinarow's Tools
    Thanks, guys,

    My favorite to use is the rack and pinion tailstock on my watchmaker lathe, but I really like being able to choose the right one for each job. This one was never very good for anything, though, between a really bad fit, weak design, and unhelpful feed pitch - this fixes two of those, anyways.

    Having different options in one unit is great, too. I use the micrometer for a fine feed on this milling quill, I can retract and not worry about over feeding if I lower the tool again.

    Attachment 22994


    In this case I preferred a single feed lever with some adjustment, and was able to use mostly scraps just the right size to make it this way - otherwise I wanted a relatively large gear, or sector of one - something like this Mikron tailstock - and it would take material I didn’t have to support and enclose it.

    Lever feed mini lathe tailstock-aff17c6f-443b-445c-ae01-84158d904d2a.jpeg

    I even had a place and way to store it!

    Lever feed mini lathe tailstock-eb518f9a-b422-45ba-891e-dbc0121740df.jpeg

  7. #5
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    Thanks threesixesinarow! We've added your Mini Lathe Tailstock to our Lathes category,
    as well as to your builder page: threesixesinarow's Homemade Tools. Your receipt:




  8. #6
    Supporting Member threesixesinarow's Avatar
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    threesixesinarow's Tools
    A similar one, also for a mini lathe, made by Waterlooboy2hp to use with a tailstock turret.

    https://www.hobby-machinist.com/thre...i-lathe.47396/


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