My Homemade Metal Lathe Project
My Homemade Metal Lathe Project
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Yes I too am building a metal working shop from scrap using the
books written by Mr. Dave Gingery. I figured, "hey I already have a
foundry why not build some really nifty machines?" Besides what is a
laboratory without a precision indexing head or milling machine?
Heck, the least I could do is build the lathe.
Home Machinists Handbook
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Part 1: Bases and bed
-8
Dave Gingery recommends building the pattern from 1/4" plywood. All of the 1/4"
plywood I've seen were about as warped and bent as an archer's bow. The 3/8"
plywood wasn't much better. So to get a straight pattern I took some wood wall
paneling material, sanded the smooth surface to rough it up then smeared a generous
amount of glue on them.
I set two pieces together on a steel table saw table and put a straight, weighted
board on it (I used about 30 pounds of weight). The glue impregnated the wood
softening it and the weight caused it to dry perfectly straight. The resulting stock
was just under 3/8" thick so the pattern is very robust and solid.
These are some of the bed castings
that didn't come out. The problem was
that I was using my 4" crucible in the
flowerpot furnace and the crucible is
actually too big for it so the metal
never got hot enough to fill the mold.
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Part 1: Bases and bed
-8
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Copyright © 2000, 2001 by Lionel Oliver II All Rights Reserved.
This site was created Sept. 28, 2000
This is not a commercial site but there are "fundraisers" if you'd like to support it!
Info. and Updates: --Latest update (Jan./11/2005 - one new photo -)--
a clay flower pot! Does it get any easier??! Need foundry supplies? Check out
(perfect booklet for beginners!) Budgetcastingsupply.com (where I shop).
Dirt and brick furnace A search for an Building steel crucibles I know that not everyone has
even simpler furnace? access to a welder so not everyone will be able to make
their own crucibles like this. But hey...its still interesting to
Live, love, cast metal! look at.
Go to part; 1, 2
Chimney pipe furnace I used this furnace
for over a year. The internal chamber was made Tool reviews In this section I review metalworking tools.
from a clay chimney flue pipe. So if people say Manufacturers; feel free to send them to me!
that it won't work (as I've read on
"rec.crafts.metalworking") tell them to shut up My early foundry setup (circa 1999) If any of them
with their theories because it works and works
from those art-metal newsgroups try to say that you must
well!
use graphite or other exotic crucibles and that expensive
commercial equipment is the only way to go then send 'em
Breaking metal in a barbecue No a here!
barbecue grill is not a furnace but when it
comes to breaking up/down large pieces of
aluminum it's close enough.
Building a metal lathe Yep, I'm building it. Waste oil burners Propane is convenient but it's not the
And you better believe I'll do some heavy most economical fuel. I've been experimenting with burners
bragging when I'm done... that cleanly burn used oil and they should allow me to even
Go to part; 1, 2, 3, 4, 5, 6, 7, 8 melt iron easily and cheaply.
Go to part; 1, 2, more...
Feast your eyes on The Lab's very own "line"
of how-to booklets inspired by e-mails. The Lab is the place for online metalworking
Printed in the USA! entertainment!
www.BackyardMetalcasting.com
E-mail responses I appreciate the e-mails I receive from visitors to this website. I read all of them (unless I mistake
the e-mail title as junkmail or "spam") but I only respond to about 30% of them. It's usually nothing personal against
the sender, I just sometimes don't feel like answering all those e-mails! The metalcasting message board is a "happening
spot" and good for getting answers to questions.
Homebuilt propane burners! Charcoal Casting brass with the flowerpot furnace For
has been really good to me, but I had to move
everyone who's been wondering, the question is finally
on to propane. From common plumbing parts
answered... Yes the flowerpot crucible furnace can melt
you can build burners to melt any metal from
brass!
lead to iron.
Ingot casting Just a page showing a stack of ingots I
Propane Vs. Charcoal I made a non-
made, a couple pics of metal being poured etc...
biased comparison between the two furnace
fuels to see which is better.
Casting defects Face it, things can go wrong with a
Sheet metal flares If you want to use your casting, but we can try to prevent it.
burner outside the furnace you'll probably need
a flare. Make them cheaply and easily.
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This website and all of its contents (except where specified)
are Copyright © 2000-2004 by Lionel Oliver II All Rights Reserved.
This website was created on Sept./28/2000.
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Here are some pics of the carriage assembly. I don't have the tool post in these
pictures 'cause I just didn't feel like finishing it yet. And I'm considering the lead
screw mechanism (including the apron) a separate section so that's not in this picture
series either.
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Part 2: Carriage assembly
-8
Go to part; 1-- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -
Part 2: Carriage assembly
-8
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Copyright © 2000, 2001 by Lionel Oliver II All Rights Reserved.
This site was created Sept. 28, 2000
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As soon as you finish the carriage assembly progress really picks up speed.
At this point most of the hard and tedious work is done. This page is on the
finished leadscrew assembly. The leadscrew moves the carriage assembly
along the ways side to side. All I have to do now is build the countershaft
(motor mount) and the lathe will be able to start cutting and turning (to bore
the headstock pattern)! The head and tail stock and faceplate patterns are the
only ones left to build. Thank goodness... Tabletop Machining
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Part 3: Leadscrew assembly
-8
Instead I got some plumber's putty called "propoxy 20" (made by; Hercules chemical
co. inc.) available in the plumbing section of your local hardware or plumbing supply
store near either the solder and Teflon tape or the adhesives. Another type is called
"epoxy putty" (from; Oatey) They seem to both be the same. There are also other
brands simply called "plumber's putty" and the colors just vary slightly. The putty
comes in a cylindrical tube with a white core and grey outer layer (some brands have
the colors reversed). You break of some of both colors and knead it between your
finger until it's uniformly grey.
About 20 minutes later it's "steel hard" (according to the package. It's hard as heck
but not hard as steel). I put some putty on the splitnut halves and squeezed them onto
the leadscrew as described in the book and the threads were printed with the pattern
ready to be removed in 5 seconds! However I left the pattern on the leadscrew for 5
minutes before removing it. I don't even think the silicone spray was needed.
I couldn't resist testing the accuracy of the threads so I attached this pattern to
the apron and it actually drove the carriage on the leadscrew! But don't try it unless
you're willing to risk breaking the pattern.
Go to part; 1--2 -- 3 -- 4 -- 5 -- 6 -- 7 --
Part 3: Leadscrew assembly
8
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Page contents copyright © 2002 by Lionel Oliver II
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At last I'll be able to power up this soon-to-be lathe and get the thing finished! I
know I said progress is quick after the carriage assembly but I had to do so much
custom work on this part (you'll see why below) that that totally ruined my flow
and slowed me down a lot. But you know what, only three casting remain (head
and tailstock and faceplate) and the lathe itself will finally pick up some of the
slack! April/02/2002
Arc Welding
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Part 4: The countershaft
-- 8
The motor was used vertically (with the shaft and pulley pointing down) in the washing
machine so there are no mounting parts suitable for my lathe application. So I had to
make a motor mount. I was going to weld an assmebly together from scraps but then I
figured I might as well make a pattern and cast it just in case I get my hands on
another similar motor.
The outer diameter of 1/2" copper pipe is 5/8" (the same as the shaft I'm using)
therefore the inner diameter a the coupling is 5/8" also. Making it a perfect
improvised bushing! All I had to do was file out the small nub that stops the pipes
from entering too far. This should last at least until I locate or learn to machine
bronze bushings or maybe I'll leave it.
Click photo for a larger image! You can see the pulleys (I cast them
myself!) in place on the countershaft
here. I purchased the belt connecting
the motor to the outboard (the 6")
pulley from an auto parts store. They
refer to them as fan belts. They are
3/8" wide rather than 1/2" (which the
pulleys are sized for) but that's no big
deal, the belts just slide a bit deeper
into the pulley grooves.
Go to part; 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7
Part 4: The countershaft
-- 8
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Page contents copyright © 2002 by Lionel Oliver II
All Rights Reserved.
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OKay the headstock is complete and at this point I can use the lathe for a few
applications. I guess I should build the tailstock next... July/23/2002
Need the cold rolled steel for your lathe or other projects? I got mine online from this
company
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Part 5: The headstock
-8
Go to part; 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -
Part 5: The headstock
-8
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Page contents copyright © 2002 by Lionel Oliver II
All Rights Reserved.
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The tailstock itself is done but there's still some finishing touches to add to it
(namely the tailstock ram) I plan to cover that in part 7; finishing touches.
Aug./26/2002
Metalcasting
Need the cold rolled steel for your lathe or other projects? I got mine online from this
company
Go to part; 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -
Part 6: The tailstock
-8
Here is a picture of the tailstock
pattern and a perfectly usable
sandmold. I however didn't use this
mold to cast the tailstock because I
didn't have any cores at the time (this
pic was taken before I cast the
pulleys).
This pattern was a lot easier to make than I expected because I thought I'd need a
wood lathe to make the core prints on the "barrel" portion of the tailstock. D. Gingery
mentions how he used a table saw. I have neither machine that I can use so I thought
I'd have to rig some sneaky homemade chuck and temporary tailstock to turn the
pattern from wood on this lathe. However the drill press was accurate enough. Glad
too... saved a lot of time. However I did design and cast a sneaky little 4-jaw chuck.
Take a look at it in use making the faceplate pattern!
Okay, here is a picture of the tailstock
mold with the core in place. You'll
clearly notice that there is another
cavity in the mold. I looked at it like
this; I've got some space left in the
flask so I might as well slap another
pattern in there... So I decided to cast
a small stepped pulley (extra pulleys
will probably come in handy sooner or
later). The pulley is the size specified
for the Gingery shaper project.
Go to part; 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -
Part 6: The tailstock
-8
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Page contents copyright © 2002 by Lionel Oliver II
All Rights Reserved.
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I'll be updating this page when I get motivated to. I've kinda lost interest in the lathe
since working on oil burner designs...
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Part 7: The faceplate and stuff...
-8
The faceplate pattern is turned on the
lathe from a piece of plywood. Gingery
says to attach the pattern to the lathe
with a "threaded shaft adaptor." Too
bad I've never heard of a threaded
shaft adaptor...
Go to part; 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -
Part 7: The faceplate and stuff...
-8
Homepage
www.backyardmetalcasting.com
Page contents copyright © 2002 by Lionel Oliver II
All Rights Reserved.
Homepage
Homepage
www.backyardmetalcasting.com
Page contents copyright © 2002 by Lionel Oliver II
All Rights Reserved.
Orders are mailed within 24 hours of receipt on weekdays (48 hours on weekends)!
The Flowerpot
Crucible
Furnace
Build a furnace from a
flowerpot and melt metal!
2nd edition
Orders are mailed within 24 hours of receipt on weekdays (48 hours on weekends)!
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All Rights Reserved.