yardsalin' again

[Snag]

This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks . A
piece of material for a 1 1/2-8 back plate will probably cost more than
the chuck . Also got a couple of open/reversible ratchet shorty wrenches
for a buck each .

[Snag]

  This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks . A
piece of material for a 1 1/2-8 back plate will probably cost more than
the chuck . Also got a couple of open/reversible ratchet shorty wrenches
for a buck each .

As expected , a piece of 1045 jut the right size set me back $17.50 .
A fully machined back plate would be over 50 bucks ...

[Bob La Londe]

   This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks .
A piece of material for a 1 1/2-8 back plate will probably cost more
than the chuck . Also got a couple of open/reversible ratchet shorty
wrenches for a buck each .

  As expected , a piece of 1045 jut the right size set me back $17.50 .
A fully machined back plate would be over 50 bucks ...

You have a back plate that fits into a 5C spindle? I have a lathe with
a 5C native spindle. Maybe we could horse trade... if I had a horse.

[Snag]

   This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet
back plate with 3 sets of jaw (all fit) for the princely sum of 10
bucks . A piece of material for a 1 1/2-8 back plate will probably
cost more than the chuck . Also got a couple of open/reversible
ratchet shorty wrenches for a buck each .

   As expected , a piece of 1045 jut the right size set me back $17.50
. A fully machined back plate would be over 50 bucks ...

You have a back plate that fits into a 5C spindle?  I have a lathe with
a 5C native spindle.  Maybe we could horse trade... if I had a horse.

I don't really need a horse anyway ... but then I don't really need
this back plate either . The threads on the outside are a little banged
up , nothing a tricorner needle file won't clean up . I can't think of
anything offhand that I need or want ...

[Jim Wilkins]

"Bob La Londe" wrote in message news:vbfsur$vcb3$***@dont-email.me...

You have a back plate that fits into a 5C spindle? I have a lathe with
a 5C native spindle. Maybe we could horse trade... if I had a horse.
Bob La Londe
---------------------------------------
LMS sells them, 5478 and 5479, listed with 5C instead of backplates.
https://littlemachineshop.com/products/product_view.php?ProductID=5478&category=

A 5C fixture mount can be an unfinished custom backplate.

[Bob La Londe]

You have a back plate that fits into a 5C spindle?  I have a lathe with
a 5C native spindle.  Maybe we could horse trade... if I had a horse.
Bob La Londe
---------------------------------------
LMS sells them, 5478 and 5479, listed with 5C instead of backplates.
https://littlemachineshop.com/products/product_view.php?ProductID=5478&category=
A 5C fixture mount can be an unfinished custom backplate.

Push comes to shove I'd rather trade with Snag than Shars, but he does
say his needs some clean up. I have nothing against Shar's. I just
like Snag better.

[Snag]

Post by Bob La Londe

You have a back plate that fits into a 5C spindle?  I have a lathe with
a 5C native spindle.  Maybe we could horse trade... if I had a horse.
Bob La Londe
---------------------------------------
LMS sells them, 5478 and 5479, listed with 5C instead of backplates.
https://littlemachineshop.com/products/product_view.php?ProductID=5478&category=
A 5C fixture mount can be an unfinished custom backplate.

Push comes to shove I'd rather trade with Snag than Shars, but he does
say his needs some clean up.  I have nothing against Shar's.  I just
like Snag better.

Actually it's just a couple of very minor dings on the threads .

[Jim Wilkins]

Post by Snag
This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks . A
piece of material for a 1 1/2-8 back plate will probably cost more than
the chuck . Also got a couple of open/reversible ratchet shorty wrenches
for a buck each .

As expected , a piece of 1045 jut the right size set me back $17.50 .
A fully machined back plate would be over 50 bucks ...

[Snag]

   This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks .
A piece of material for a 1 1/2-8 back plate will probably cost more
than the chuck . Also got a couple of open/reversible ratchet shorty
wrenches for a buck each .

  As expected , a piece of 1045 jut the right size set me back $17.50 .
A fully machined back plate would be over 50 bucks ...----------------

I read somewhere that chuck backplates for threaded spindle lathes
should be soft cast iron instead of steel to minimize spindle thread wear.
----------------
A piece of cast that size is a good bit more expensive ... if I could
find one .

[Jim Wilkins]

"Snag" wrote in message news:vbgc4r$15175$***@dont-email.me...

On 9/6/2024 8:07 PM, Jim Wilkins wrote:
I read somewhere that chuck backplates for threaded spindle lathes
should be soft cast iron instead of steel to minimize spindle thread wear.
----------------
A piece of cast that size is a good bit more expensive ... if I could
find one .
Snag
---------------------------------
Gym weights?

A dumbbell became the ball pivot feet of my hoisting shear legs. The iron
cut easily enough without annealing in the wood stove. I judge cast iron's
condition by the chips, compared to known-good pieces like backplates. The
worst crumbly cast iron I've machined was the head of a Duracraft drill
press. Pipe fittings have mostly been pretty good, as was my second-hand
(self-annealed) Taiwan wood stove to which I added a small window.

http://www.chaski.org/homemachinist/viewtopic.php?t=102818

https://www.slfcastings.com/heat-treatment/

I turned 1-1/2 - 8 and 2-1/4 - 8 dummy spindle ends that fit my Bison chucks
closely to use as Go gauges, and to take on treasure hunts to check sizes
instead of trying to measure or guess between 2-1/4 - 8 or 2-3/16 - 10. The
2-1/4 - 8 stub was a scrap of 2" water pipe. The 1-1/2 - 8 stub has a 1.00"
shank to mount a Jacobs 58B chuck in a collet.

[Bob La Londe]

Post by Jim Wilkins
I read somewhere that chuck backplates for threaded spindle lathes
should be soft cast iron instead of steel to minimize spindle thread wear.
----------------
  A piece of cast that size is a good bit more expensive ... if I could
find one .
Snag
---------------------------------
Gym weights?
A dumbbell became the ball pivot feet of my hoisting shear legs. The
iron cut easily enough without annealing in the wood stove. I judge cast
iron's condition by the chips, compared to known-good pieces like
backplates. The worst crumbly cast iron I've machined was the head of a
Duracraft drill press. Pipe fittings have mostly been pretty good, as
was my second-hand (self-annealed) Taiwan wood stove to which I added a
small window.
http://www.chaski.org/homemachinist/viewtopic.php?t=102818
https://www.slfcastings.com/heat-treatment/
I turned 1-1/2 - 8 and 2-1/4 - 8 dummy spindle ends that fit my Bison
chucks closely to use as Go gauges, and to take on treasure hunts to
check sizes instead of trying to measure or guess between 2-1/4 - 8 or
2-3/16 - 10. The 2-1/4 - 8 stub was a scrap of 2" water pipe. The 1-1/2
- 8 stub has a 1.00" shank to mount a Jacobs 58B chuck in a collet.

Gym weights is a commonly suggest alternative, but there have been
plenty of reports of voids, and hard spots as its the cheapest cast they
can get to stay together. If they are free and you are bored it makes a
nice Saturday afternoon project, but I wouldn't go seek them out.

[Jim Wilkins]

"Bob La Londe" wrote in message news:vbhvrl$1egij$***@dont-email.me...

Gym weights is a commonly suggest alternative, but there have been
plenty of reports of voids, and hard spots as its the cheapest cast they
can get to stay together. If they are free and you are bored it makes a
nice Saturday afternoon project, but I wouldn't go seek them out.

Bob La Londe
----------------------------------
Having a wood stove to anneal it and using HSS lathe bits and endmills that
I can resharpen lets me risk mystery metal. My lathe chucks are all on
purchased backplates, though I'd consider gym weight iron for a slow moving
rotary table chuck adapter.

[Snag]

Post by Bob La Londe
Gym weights is a commonly suggest alternative, but there have been
plenty of reports of voids, and hard spots as its the cheapest cast they
can get to stay together.  If they are free and you are bored it makes a
nice Saturday afternoon project, but I wouldn't go seek them out.
Bob La Londe
----------------------------------
Having a wood stove to anneal it and using HSS lathe bits and endmills
that I can resharpen lets me risk mystery metal. My lathe chucks are all
on purchased backplates, though I'd consider gym weight iron for a slow
moving rotary table chuck adapter.

Where does one come across those weights ? I've seen a few of the
sand filled injection molded plastic units at yard sales , haven't run
across any CI units . I come across projects where a chunk of cast would
be a better choice than mild or stainless or whatever I have on hand .
My RT chuck adapter is made from a scrap aluminum lost foam casting .
It's been a couple of thou off center since the day I mounted it 20
something years ago . But since I only use the 4 jaw chuck on it it
doesn't really matter .

[Leon Fisk]

On Sat, 7 Sep 2024 20:25:30 -0500

Post by Snag
Where does one come across those weights ?

I'd watch Craigs list and be very patient. Example search for my
general area:

https://grandrapids.craigslist.org/search/sss?query=barbell%20weights#search=1~gallery~0~0

[Jim Wilkins]

Gym weights...

Where does one come across those weights ? I've seen a few of the
sand filled injection molded plastic units at yard sales , haven't run
across any CI units . I come across projects where a chunk of cast would
be a better choice than mild or stainless or whatever I have on hand .
My RT chuck adapter is made from a scrap aluminum lost foam casting .
It's been a couple of thou off center since the day I mounted it 20
something years ago . But since I only use the 4 jaw chuck on it it
doesn't really matter .
Snag
----------------------------

I bought some on sale at Walmart many years ago, when they switched from
plain to fancier styles or brands. I don't know what's sold now, I get my
exercise from manual hoisting gear, firewood and wet lumber.

Weekend flea markets have been good sources for me, I found a repairable
mobility scooter that I could need soon, a 5/8" x 96' arborist bull rope, a
j-bar and industrial electronic test equipment. The rope's only defect was
being 4' short of standard length, the test equipment can accurately measure
the resistance of an inch of 10 AWG wire, or switch and connector contact
resistance. A j-bar is like a toe jack on wheels, for moving heavy machinery
etc. Part of my first full time job was helping load newly built machines
onto a flat bed truck with one. The batch of logs I'm cutting up have
weighed up to 4500 Lbs and I don't have powered equipment to lift and move
them, or clear space to maneuver it if I did.

A neighbor tried to stack the logs with his tractor but about all he could
do was show that it hadn't lost its rated 900 Lb bucket lift capacity, the
logs were mostly heavier. Then he replaced several failing hoses. I stacked
the logs with the tripods and gantry hoist which at the time could lift and
move 2000 Lbs. Since then I've upgraded the gantry to >3000, and with
improved baseplates two tripods can lift and slowly move at least 4500.

Grade 100 chain and fittings:
https://www.chappelltractor.com/learn-about-our-tractor-excavator-utv-equipment-dealership--bbchain

[David Billington]

Post by Snag
This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back
plate with 3 sets of jaw (all fit) for the princely sum of 10 bucks .
A piece of material for a 1 1/2-8 back plate will probably cost more
than the chuck . Also got a couple of open/reversible ratchet shorty
wrenches for a buck each .

I bought one of those and it has proved fairly handy but I found as
supplied it had quite a bit of run-out and the chuck wasn't square. I
separated the chuck from the 5C backplate and found that was badly
machined but once correctly machined it now runs quite true for a cheap
chuck.

[Jim Wilkins]

This time the Big Score is a 3 inch 3 jaw chuck on a 5c collet back plate
with 3 sets of jaw (all fit) for the princely sum of 10 bucks . A piece of
material for a 1 1/2-8 back plate will probably cost more than the chuck .
Also got a couple of open/reversible ratchet shorty wrenches for a buck
each .

I bought one of those and it has proved fairly handy but I found as
supplied it had quite a bit of run-out and the chuck wasn't square. I
separated the chuck from the 5C backplate and found that was badly
machined but once correctly machined it now runs quite true for a cheap
chuck.

-------------------------------------

I have one as well, in a wooden box, likely from Enco. It's not my first
choice on the lathe but it's very handy for machining indexed wrench flats
etc on turned parts. A chuck small enough to pass over the carriage allows
facing both sides of gear or pulley blanks held by the hole ID, and (like
collets) bringing the tailstock close to the chuck for accurate center
drilling.