Forgotten Oldie

This was an old “never posted” draft from 2021:

New toy came home.  Paid scrap metal pricing, since the carriage didn’t work any more, no chucks, no tooling, and the camlock hardware was stripped.

It’s a Force International 12×36, possibly a “gunsmithing” lathe. Force no longer exists.

Replacement camlock screws and springs came from Grizzly (their 4003 lathe is the same). The detent pins have been deceptively hard to locate.  I ended up fabricating my own out of 1/4″ drill rod, hardened using motor oil.

This allowed one of the used chuck to be trial fitted. I’ve ordered a brand new 3-jaw, as you really need a decent chuck to do decent work.

A new $1 roll pin was replaced (6mm; the old one had worn down to 5mm and fell into the apron):

The carriage was reassembled:

Tailstock reinstalled:

I did a good service on everything since it was all apart. Lathe runs, and operates, and feeds. Waiting for the tool post to arrive. I can use my existing carbide tool holders.  Needs a new nut-thingie inside the tailstock.

End Update: I did get a Quick Change Tool Post, as well as a brand new 8″ chuck.  Lathe has been in service since – works great!

I broke a tap!

Not just any tap, but a 3/8″ NPT pipe tap.  In my son’s 400 Pontiac block, threading for oil gallery plugs.

The trick to remove them, is to weld (preferably TIG) the tap itself to the inside of a large nut.  Keep a LOT of heat on it.  The heat will try to expand the tap, but because of the cold iron block surrounding it, it can only expand lengthwise.  Then let it cool – but it cools and contracts both lengthwise AND widthwise!

Ta-da!  Crisis averted!

Pipe Anvil

A new tool is fabricated, a Pipe Anvil.

Pipe anvils are used to easily shape sheet metal into curves or cones, of varying diameters.  Usually made out of a couple different sizes of whatever pipe you can find for cheap/free.

Read More: Pipe Anvil