Author Topic: Obscure but Free PDF "Threading Information New Atlas 618 Lathes"  (Read 1548 times)

Offline Topos

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<< http://www.cvbt-web.org/uploads/Equip/AtlasLathe/Atlas_Threading_Info.pdf >>

I needed to make some metric M6 -1.00 screws for my SINAR Clamp Set Unit
as none easily available here in the Colonies. My old Atlas 618 ... no longer
run by water wheel now that electric motors have been discovered  ... is
has an  Imperial lead screw of 16 TPI.

Tables in the long forgotten "Threading Information" gem gave me the proper
transpose gear pair ... 44/52 and the proper combinations for cutting the 1.00 mm pitch.

Three of the mm threads would require a M6-735 extension bracket which seems
non-existent. Any there over the 'pond'?

Of note, in the back of the manual are  tables for gear set ups to turn springs on the lathe.

 :mmr:

Offline Toolshed

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Re: Obscure but Free PDF "Threading Information New Atlas 618 Lathes"
« Reply #1 on: May 06, 2016, 01:25:18 PM »
THANKS MAN!!  Just what I needed for mine.  Glad to hear someone else on here has an Atlas/Craftsman!!

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Offline Topos

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Re: Obscure but Free PDF "Threading Information New Atlas 618 Lathes"
« Reply #2 on: May 06, 2016, 02:16:20 PM »
We 'Colonists' who have an Atlas 618 are scarce but in a sense lucky.
For all its limitations versus  a lathe with #MT3 head  so much can be done.
In 1960's NRA Gun Smithing Publication had an article from an Alabama
gunsmith who used this lathe for many jobs.

For example he threaded a 16" barrel on bore.

I have made for lathe small slotted milling table using
Unimat slotted milling tables and mounted them
with a block on the Milling Attachment.

Two Unimat vises mount onto the milling table allow
for the machining, slotting, milling, etc. small parts.

E.g., << http://myplace.frontier.com/~steven.jaynes/lathes/Univeral-Accessories/Mill-Table-clmps-01.jpg >>

Offline Topos

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Re: Obscure but Free PDF "Threading Information New Atlas 618 Lathes"
« Reply #3 on: May 08, 2016, 08:53:04 AM »
An other addition to the Atlas 618 is the use of ER40 collets with and 2MT shank*.

For example I needed to turn a thin ⅛" x 1.5" steel shaft. Holding a 1" rod in the
ER40 making it a 'chuck' I accurately cut the shaft dead on.

For smaller models my ER25 collets  with 2MT shank are used.
( Never too many tools for an inveterate tool-junkie. :)



* << http://www.rdgtools.co.uk/acatalog/2MT-SHANK-COLLET-CHUCK-ER40-675545.html >>