Re: cannot turn lead screw in reverse
Al: I do have that book. Agreed that it is a goldmine.
jack
By
Jack Dinan
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#108384
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Re: cannot turn lead screw in reverse
Great Jack, you are back on the go again. I keep a notebook with sections for each machine in my shop. Each one includes info I need to know but might have forgotten¡¡ lubrication type, setups,
By
Al MacDonald
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#108383
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Re: cannot turn lead screw in reverse
Al:
Thank you for the suggestion.
It turns out that the problem was where it usually lies - with me.
Instead of feeding with the half nut lever, I was feeding with the clutch knob.
Several years
By
Jack Dinan
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#108382
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Re: cannot turn lead screw in reverse
Just a thought here¡.. are you withdrawing the thread cutting tool while running the leadscrew/carriage to its start position? If not, the slop on the geartrain/leadscrew/half nut might be putting
By
Al MacDonald
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#108381
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Re: cannot turn lead screw in reverse
My SB10k has a gitts oil cap on the very left side, plus I add some oil to where the leadscrew exits the QCGB. My metric system has 2 gitts oil caps on the top.
By
Al MacDonald
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#108380
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cannot turn lead screw in reverse
SB 9A
Cutting a thread using the method of engaging the lead screw, running forward, stop, running in reverse without disengaging, repeat.
Running forward goes smoothly.
Running in reverse flips the
By
Jack Dinan
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#108379
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Re: MLA Crossslide
That link will work on your computer. It doesn't work on mine because I don't have the file at all, not to mention the same file structure you have. I'd like to have it! I do have the casting, but not
By
Bill in OKC too
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#108378
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Re: MLA Crossslide
Hi There,
Well, if I shorten it, I loose some of its functionality.
When I am ready to tackle this project, I'll do a mock
up and see if it is going to be feasible.
Good Luck!
-Blue Chips-
Webb
By
wlw19958
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#108377
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Re: MLA Crossslide
??? Can ya shorten the new crossslide some when ya make it ?
??? animal
By
mike allen
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#108376
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Re: MLA Crossslide
Hi There,
Yes, I know about the extension for the Taper Attachment
(I even knew the guy that designed it and got MLA to
make it).? I just don't know if it will function with the Heavy
Ten taper (it
By
wlw19958
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#108375
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Re: MLA Crossslide
??? There's a extension for the crossslide to make it work with the
taper attachment , Like all their stuff ya can just buy the drawings if
ya want
By
mike allen
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#108374
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Re: MLA Crossslide
Hi There,
I purchased one of those kits earlier this year
and it is currently sitting in a drawer.? I plan to
adapt it to my Heavy Ten.? There is plenty of
metal and I am pretty sure it will
By
wlw19958
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#108373
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Re: MLA Crossslide
Thanks for that link Al, makes fascinating reading, but I doubt whether the information therein is of much practical value to someone with an old SB lathe! ?To put that into context, it deals only
By
[email protected]
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#108372
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Re: MLA Crossslide
That worked once I edited the text to put the link back together.
By
John Dammeyer
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#108371
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Re: MLA Crossslide
One thing that MLA advertises is that their projects are made for the lathe ON the lathe. If I remember correctly the extended crossslide needed use of a mill for the T-slots. Great drawing package
By
Al MacDonald
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#108370
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Re: MLA Crossslide
Try this one. Looks like my computer kept going to a saved version.
https://www.practicalmachinist.com/forum/threads/machining-a-t-slotted-cross
-slide.177054/page-5#post-1449260
Al
By
ww_big_al
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#108369
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Re: MLA Crossslide
file:///C:/Users/arkna/OneDrive/Documents/Manuals/Machine%20Tools/Southbend%
20Lathe/T-Slot%20cross%20slide/Machining%20A%20T-Slotted%20Cross%20Slide.htm
file:///C:/Users/arkna/OneDrive/Documents/Ma
By
ww_big_al
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#108368
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Re: MLA Crossslide
That link doesn't work.
By
John Dammeyer
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#108367
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Re: MLA Crossslide
I remember reading that Rolls Royce set their newly cast engine blocks ¡°on the shelf¡± for some 8 years before machining them, so the internal stresses would be relieved. Don¡¯t know if that is
By
Al MacDonald
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#108366
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Re: MLA Crossslide
I have one sitting on the shelf too. The casting looks great and I would love to machine it but my mill is to small. I'm planning on getting a bigger mill but in the mean time I'm going to college to
By
William Nelson
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#108365
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