PDA

View Full Version : Fun lathe only projects



balsaman
06-02-2004, 05:54 PM
I have my lathe but no milling machine yet. I am looking for some cool projects that can be done on a lathe and drill press only. Not too complex as I am still learning. What do you think?

Eric

TyRex
06-02-2004, 06:32 PM
pens, lamps, flashlights, telescope parts(if you're into that).......what sort of interests do you have? how big of a lathe do you have? Right now i'm actually making modifcations to my lathe using my lathe.....my lathe will be used for telescope parts, cnc parts, bow/arrow mods, etc.

Pick a hobby or something that interests you and try to think of ways a lathe can be used to expand or improve that hobby.

marvinstov
06-02-2004, 07:00 PM
Balsaman,
Same as TyRex, I spent a lot of time making mods to the lathe. Some necessary and some just because I wanted to. I think for me one of the most satisfying was to make a custom fit (to MY hand) file handle. The directions for measuring your hand can be found in one of Guy Lautard's "Machinist's Bedside Reader" which you probably already have. I don't remember what he made them out of but I made mine from aluminum with a brass ferrell and it fits my had great. Now it's almost a pleasure to use a file, at least my hand doesn't get so tired when I have to do it. I only have two of the "Bedside Readers" but will get the third soon. They have a lot of info on making things like you are talking about.

Marv

P.S. Congratulations on your lathe and nice review.

TyRex
06-02-2004, 07:25 PM
Ah, i see you have an 8x12.......

Here's a nice site with a little info on what Dan Kautz does with his.... http://www.tedatum.com/thms/index.html

HuFlungDung
06-02-2004, 07:32 PM
Pssst, there aren't any cool lathe projects. The lathe is just to prepare the blanks for the mill to use for the cool projects :D

DDM
06-02-2004, 07:42 PM
Every lathe at one time or another needs to build a cannon. But other than that there are tons of things you can build. If I get time and find them, I'll post some pictures of some of the stuff I've built at work, a little larger than your HF can handle though.

Carl

CrazyRonny
06-02-2004, 09:03 PM
Balsaman,

Don't forget it's possible to do some small milling job on your lathe if your project need it. By putting the tool post away and adding another axis, for up and dow movement, with a small vise on it or a way to fix your part. Then you put the endmill in the lathe chuck and you have an horizontal small mill.

CrazyRonny

balsaman
06-02-2004, 09:17 PM
Ronny,

Yep, I am aware that can be done as well.

Thanks for all the input so far fellows. Keep it coming. An aluminum pen sounds kinda fun.

Eric

marvinstov
06-02-2004, 09:34 PM
Eric,
Here's my last mod (Lead Screw Handwheel). Only did it because I ran out of things to do waiting on parts and materials. I'm sure it will come in useful sometime. I still have to stamp or engrave the numbers on the scale.

Marv

IJ.
06-02-2004, 11:00 PM
Originally posted by HuFlungDung
Pssst, there aren't any cool lathe projects. The lathe is just to prepare the blanks for the mill to use for the cool projects :D
:D ROFLMAO! I almost spat coffee all over my monitor when I read this!

Ken_Shea
06-03-2004, 12:14 AM
Balsaman,
How about some custom radio knobs, Door lock plungers, shifter handles, you can turn cam bolts by offsetting the work piece in the chuck with a spacer, larger cranks for the lathe or the CNC mill you are going to make sooner or later, if your lathe is like my small lathe it could stand some bushings in the cranks to take up the slop (that has always bugged me :D ), practice threading both internal and external, a yo-yo, OK, that is it for me tonight :D

Ken

Klox
06-03-2004, 02:49 AM
How about a Tap Handle with a ratchet? I have some drawings somewhere.....
(sorry i forgot: the drawings are all metric)

Klox

kong
06-03-2004, 04:12 AM
Erm, what about a nice set of alloy wheels for your planes?:D
Seriously though - get some reamers from ebay and make a set of fixed length toolholders for the router.

TyRex
06-03-2004, 04:33 AM
Originally posted by Klox
How about a Tap Handle with a ratchet? I have some drawings somewhere.....
(sorry i forgot: the drawings are all metric)

Klox

that sounds like a really good idea.....would help speed things up and you could always have a constant downforce on the tap when starting. I think I might give that a shot some day.

ynneb
06-03-2004, 04:35 AM
What about making a plumb bob, you know, the thing that hangs on the end of a string to make a vertical line.

If I had a lathe I would try and make a V bearing. You know, the ones I payed too much for. The only difference would be I would use a traditional bearing and make shoe that has a V cut in it and slips over the bearing and is fastened into place with a grub screw.

What about making some nylon bushes to be used as bush linear bearings for your next router.

balsaman
06-03-2004, 08:27 AM
Originally posted by kong
Erm, what about a nice set of alloy wheels for your planes?:D
Seriously though - get some reamers from ebay and make a set of fixed length toolholders for the router.

I think fixed length tool holders would be a great idea. Right after the aluminum pen.

Eric

NEATman
06-03-2004, 10:00 AM
Here's a solid Stainless Steel pencil that I made. I was tired of the plastic threaded together housing snapping in half. Only thing is, I need to add a clip so it won't roll off the table and impale my foot! If anyone is interested I have a solidworks model, and the pencil manufacturer's info. I have also made about 30 wooden pens and pencils on my wood lathe, with kits from www.woodcraft.com Very easy, and they look great. No reason that they couldn't be made on a metal lathe, except for the wood chips everywhere.

Keith

balsaman
06-03-2004, 03:32 PM
Is the pencil heavy?

NEATman
06-03-2004, 03:45 PM
This is one heavy pencil. I originally made one for a friend, and decided to make myself one too. The joke about the foot impalement is due to the fact that it is quite heavy, and it likes to roll off the edge of the table. I estimate that it is about 1/10th to 1/8 of a pound.

Keith

cncadmin
06-03-2004, 03:57 PM
How about making some of these for me - http://helibuffproducts.com/cyclic_rings.html ?

arvidb
06-03-2004, 06:27 PM
Originally posted by TyRex
Ah, i see you have an 8x12.......

Here's a nice site with a little info on what Dan Kautz does with his.... http://www.tedatum.com/thms/index.html

Great link. OOH I want to build model train kits sometime in the future :) Thanks!

Arvid

balsaman
06-03-2004, 07:05 PM
Well,

I decided a live center would be a good project. I found a double row bearing in my junk pile, and I scooped a broken (at the base) morse drill bit from work. I turned down the shaft to fit the bearing. I was hoping to need to put the bearing in the oven for an interference or "size for size" fit but wouldn't you know it when I had .002" to go and took another .001" cut I ended up about .0005 under. Forgot about that diameter/radius thing. In any case it's a "push" fit so a little lock-tight will hold it there.

balsaman
06-03-2004, 07:09 PM
Next will be the outside "cup" part with the 60 degree point on the end. That will be an interesting one...Gotta learn somehow.

It will be mild steel so I guess it will be a "farmers" live center.

BTW that drill bit was hard! I have cutters with the carbide indexable inserts. Squeeky cuts but cuts never the less.

Eric

balsaman
06-03-2004, 07:13 PM
Originally posted by CNCadmin
How about making some of these for me - http://helibuffproducts.com/cyclic_rings.html ?

What do you want them made from and what are the dimentions? I can make a shiney aluminum one for you.

Might be just as easy from delrin or 1/16" plywood and on the router....

Eric

ToyMaker
06-03-2004, 10:22 PM
Then there are the various mods that folks do on the 7x lathes. Don't know if any apply to the 8x.
QCTP (which you already have), saddle lock, tailstock cam lock, cross slide and compound bearings, custom hand wheels, and so on and so forth.

robotic regards,

Tom
= = = = =
The wife of a Las Vegas doctor telephoned a local casino and asked to have her husband paged.
Sorry, Madam," came the reply, "The house does not make doctor calls!"

cbcnc
06-04-2004, 01:59 AM
Eric,

If you wanted to build a large electric airplane here is the brushless motor for it:
LRK-Torquemax Group @ Yahoo (http://groups.yahoo.com/group/lrk-torquemax/)

Chris

Stevie
06-04-2004, 05:33 PM
I've built 2 live centers for mine now; one with an extended center and the other you have seen in my post about building the lathe

Now my chuck is here I'll be making a whole need headstock with new spindle; new taper roller brgs etc

The old spindle will become a stepper powered rotary vertical/horiz axis (well if I can figure out this 5phase drive)
I'll need a couple of accurate gears to make this attachment; maybe a small worm and crown

Stevie
06-05-2004, 01:15 PM
http://www.warshipmodels.com/~SteveNuttall/Xtend.jpg

Took a pic of the new one; as you can see i made it from billet P/Bronze; I love this stuff; expensive yes; but looks a million

arvidb
06-06-2004, 12:29 PM
Sorry for my ignorance, but what does a live center do?

Arvid

kong
06-06-2004, 01:09 PM
Centers are used to support long stock at each end when turning. A live center will rotate with the stock, whereas a dead center does not rotate.

arvidb
06-06-2004, 02:31 PM
Ah, ok :)

But why make your own? Isn't this a standard part on any lathe? But that might be a dead center? *hmm* As you can see I don't know much about lathes.

thanks for the info, kong!

Arvid

Stevie
06-06-2004, 02:44 PM
not many come with a live center

arvidb
06-06-2004, 03:15 PM
ok, that explains it then. thanks!

Arvid

TyRex
06-06-2004, 07:01 PM
My grizzly 9x20 came with one.....i know the 7x12s can be bought with one in a kit. Mid to low end live centers can be found for relatively cheap. If you get a lathe from grizzly, they almost always include a live center.

Stevie
06-06-2004, 08:07 PM
But it is a lot of fun making your own; and if it works as expected very rewarding

balsaman
06-06-2004, 08:20 PM
Yep, it's not about saving money (this time)

Eric

TyRex
06-06-2004, 09:15 PM
it does look like an excellent project to start out with. I do like the look of that bronze very much.

Hobbiest
06-06-2004, 10:31 PM
turn down the ends of lead screw to sell and recoup the purchase.

JOE65
06-06-2004, 10:46 PM
Want a challenge?

Try this. floating cube inside a shere.

It'll keep you out of trouble for weeks!:)

I did this one from wood on my Taig. It would be cool in stainless.

http://www.members.shaw.ca/dgray108/CUBE.jpg

balsaman
06-07-2004, 12:06 PM
I am having enough trouble just making shafts and such thank you....:)

Eric

Klox
06-08-2004, 02:45 AM
Do any of you guys have drawings for a quick tool change tool post?

Klox

kong
06-08-2004, 08:17 AM
No drawings, but there are a couple of "how I did it" guides over here (http://homepage.ntlworld.com/v.ford/machine.htm)
I use the non-piston type, works well.

RotarySMP
06-10-2004, 04:08 PM
I have just made my prototype bell mouth. A friend need four for his Mazda 13B powered RV-4 aircraft.

http://www.wrathall.com/Images/120_2013.jpg
http://www.wrathall.com/Images/120_2015.jpg

RotarySMP
06-10-2004, 04:09 PM
Oops, lets try to HTML that.

http://www.wrathall.com/Images/120_2013.jpg

http://www.wrathall.com/Images/120_2015.jpg

What am I doing wrong here?

This bell mouth was the first complex shae I have done on the CNC mini-lathe, and it sure was way cool watching it cruise around the curves.

cncadmin
06-10-2004, 04:50 PM
How does one machine a curve like what you have done?

balsaman
06-10-2004, 05:03 PM
His machine is cnc...

Eric

IJ.
06-10-2004, 06:19 PM
Beautiful result Rotary :)!

RotarySMP
06-11-2004, 03:32 AM
Hi Paul G,

What did I do wrong trying to link the photos in?

This bell mouth was made in two set ups.

The first: I chucked the bar and bored out the ID, and put in a step to slide over the intake tube. During this set up I turn the outside usings parallel paths to rough it down, and then three passes along the spline shape to finish. Once this is finished I used 400 / 1000 sandpaper and then aircraft Al polish to shine up the exterior by hand.

I then used a parting tool to start parting. On the mini-lathe I can't go very deep, so the cutoff is finished with a hacksaw.

The piece is reversed and gripped from the inside on the step for the intake tube, and then the elliptical internal bell shape is first roughed with parallel paths and then three passes along the bell shape. Again finished with sand paper and polish.

I did the tool paths in AutoCAD R14, and ACE converter. Found that Pellipse gave a very facetted tool path, so I replaced the ellipse with a spline, then saved to R12 (converts spline to Pline), reopened and exploded it. This bellmouth took me the best part of a week to make, but it is the first time I have used software to generate G code (normally I just code by hand, or with Excel). Needed to do a fair bit of editing in Notepad (like converting all Y's to Z's for the lathe).

If you draw a spline, then off set it twice, save as V12, reopen, then explode and export to DXF (I use V13/LT95 DXF, which ACE seems to like) you get three parallel tool paths, but the middle one will be drawn opposite direction to the others. For things like this I just open the ACE generated file in EXCEL, and paste the offendng lines to a separate sheet and then sort them to reverse order.

The Bellmouths my friend needs are slightly different dimensions, but I can do the drawing, draw the tool path, export it to ACE and then edit it in the notepad in about an hour.

Each bellmouth generates about 10 times it's weight in swarf. The right way to do these would be a casting.

Stevie
06-12-2004, 10:21 PM
http://www.warshipmodels.com/~SteveNuttall/flex.jpg

Todays little project
A flex coupling for a stepper to ballscrew
2 peices of p/bronze with UHMW as the flex
1/4" to 3/16" coupling
2-56 screws

marvinstov
06-12-2004, 10:26 PM
Cool, I like it!

balsaman
06-13-2004, 03:51 PM
Got my live center done. It is complete with .003 runout. (I didn't bother with my 4 jaw). I could throw it in the 4 jaw later and take a lick off it yet.

balsaman
06-13-2004, 03:52 PM
One more

Stevie
06-13-2004, 04:32 PM
Real nice Eric

It is fun making your own tools

marvinstov
06-13-2004, 05:19 PM
Pretty!