Forum sponsored by:
A Little Light Relief - Mine's Bigger Than Yours...............
| Andrew Johnston | 18/07/2011 23:03:12 |
 7061 forum posts 719 photos | ..........unless you know different; swarf that is! I was in a bit of hurry to machine a 3" bar of steel (EN3B I think) down to 1.5" diameter this evening. Set the speed to 800rpm, depth of cut 0.1" and feedrate 4 thou/rev. The swarf came off in loooooong tightly curled lengths, interspered with shorter lengths. The longest single length I could find is shown below; a bit over 11 feet. The ruler is a 600mm one.  I also managed to burn my foot, and ruin another pair of socks, while operating the lathe; it takes real 'genius' to be that creative! Regards, Andrew |
| John Stevenson | 18/07/2011 23:10:34 |
 5068 forum posts 3 photos | If you were in that much of a hurry then you should have been running at 1400 revs and 4mm cut. Medium feed [ don't know what that is never looked at the book <g> ] John S. |
| Billy Mills | 18/07/2011 23:32:13 |
| 377 forum posts | I had a longer one than you but it went rusty and dropped off. How did you manage to do in the first pair of socks Andrew? is your lathe fitted with foot wheels? the Mystery deepens..... Happy Risk Assessments Billy. |
| Andrew Johnston | 18/07/2011 23:41:41 |
7061 forum posts 719 photos | Posted by John Stevenson on 18/07/2011 23:10:34: If you were in that much of a hurry then you should have been running at 1400 revs and 4mm cut. John S. Steady on, I've only got a weeny lathe! Andrew |
| chris stephens | 18/07/2011 23:55:52 |
| 1049 forum posts 1 photos |
Hi Andrew,
11 Feet, pathetic,
 A few years ago I was turning down some 80mm nylon, and got swarf that was around 150-175 YARDS long. I was going to take it to MEX at Sandown for a "guess the length of the swarf" competition on the SMEE stand. I haven't given the exact length in case the idea gets resurrected another time.
chriStephens
EDIT I did it deliberately just for the fun of it, otherwise I would have taken a heavier feed rate.
Edited By chris stephens on 18/07/2011 23:57:26 |
| Andrew Johnston | 19/07/2011 00:02:53 |
7061 forum posts 719 photos | Ah ha, I knew I'd be out-swarffed in short (long?) order.  Impressive, when I turn plastic the swarf always seems to wrap itself around the job in a big ball getting tighter and tighter, and generating heat, so I have to stop and clear it before it overheats and melts. Andrew |
| chris stephens | 19/07/2011 00:30:52 |
| 1049 forum posts 1 photos | Hi Andrew,
Don't feel bad about it, I was winding it up as I was going so that it did not get tangled.
chriStephens
|
| Dave Tointon | 19/07/2011 02:09:35 |
| 49 forum posts | I'd be inclined to increase the feed rate until the swarf chips into little blue pieces. much safer to clean up and a few of those down your boot will ruin a pair of socks very efficiently and give you a nasty burn as well!!!
Regards
Dave Tointon
|
| Ian S C | 19/07/2011 11:57:07 |
 7468 forum posts 230 photos | I did'nt measure my longest bit , it was 316 stainlessthat I was boring out to make a cup shaped piece for the hot end for one of my hot air engines. I was going a bit slow, about 500rpm, and taking 2 mm cuts, to bore a hole 1 3/4" dia. Ian S C |
| NJH | 19/07/2011 12:21:05 |
 2314 forum posts 139 photos | You Guys need to get out more!  Cheers Norman Edited By NJH on 19/07/2011 12:21:32 |
| chris stephens | 19/07/2011 13:38:01 |
| 1049 forum posts 1 photos | What, and miss all the fun?
chriStephens
|
| Andrew Johnston | 19/07/2011 15:47:36 |
7061 forum posts 719 photos | Posted by NJH on 19/07/2011 12:21:05: You Guys need to get out more! Cheers Norman Quite the reverse actually! I seem to be out and about non-stop, so very little workshop time available, hence the rush that resulted in this thread. Dave: Actually the loooong swarf was the exception rather than the rule. Most of it came off in lengths between 1" and 10". It seemed to alternate, one cut long, the next short. Presumably some subtle changes in the cutting parameters determine the length, but I'm blowed if I know what. It was one of the short purple bits of swarf that got into my shoe, and resulted in the ejection of said shoe about a millisecond later. Left a nice hole in the sock and a pretty pattern burnt into my foot. According to my calculations I was removing 2.9 cubic inches per minute. Allowing 1hp per cubic inch per minute, I was on the limit, as I have a 3hp motor on my lathe. You could certainly hear the headstock gears taking the strain and slowing down slightly. Regards, Andrew PS: The first pair of socks were ruined when I dropped a shovel load of swarf on my shoes when clearing up. There were so many little bits of sharp swarf embedded in the socks it was easier to throw them away. |
| Fil | 19/07/2011 15:59:04 |
| 8 forum posts | Doesn't everyone wear flared trousers to prevent the swarf-in-sock syndrome |
| Andrew Johnston | 19/07/2011 16:04:53 |
7061 forum posts 719 photos | Yes, but as I'm getting older the trousers need to be flared at the waist line to allow for expansion, rather than at the trouser end. Andrew |
| Stub Mandrel | 21/07/2011 20:37:20 |
 4318 forum posts 291 photos 1 articles | Chris, Your nylon swarf... perhaps you could teach the anglers how to make their own monofil. Neil |
Please login to post a reply.
Magazine Locator
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
Sign up to our Newsletter
Sign up to our newsletter and get a free digital issue.
You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy
Latest Forum Posts
- *Oct 2023: FORUM MIGRATION TIMELINE*
05/10/2023 07:57:11 - Making ER11 collet chuck
05/10/2023 07:56:24 - What did you do today? 2023
05/10/2023 07:25:01 - Orrery
05/10/2023 06:00:41 - Wera hand-tools
05/10/2023 05:47:07 - New member
05/10/2023 04:40:11 - Problems with external pot on at1 vfd
05/10/2023 00:06:32 - Drain plug
04/10/2023 23:36:17 - digi phase converter for 10 machines.....
04/10/2023 23:13:48 - Winter Storage Of Locomotives
04/10/2023 21:02:11 - More Latest Posts...
- View All Topics
Support Our Partners
Shopping Partners
Subscription Offer
Latest "For Sale" Ads
- Reeves** - Rebuilt Royal Scot by Martin Evans
by John Broughton
£300.00 - BRITANNIA 5" GAUGE James Perrier
by Jon Seabright 1
£2,500.00 - Drill Grinder - for restoration
by Nigel Graham 2
£0.00 - WARCO WM18 MILLING MACHINE
by Alex Chudley
£1,200.00 - MYFORD SUPER 7 LATHE
by Alex Chudley
£2,000.00 - More "For Sale" Ads...
Latest "Wanted" Ads
- D1-3 backplate
by Michael Horley
Price Not Specified - fixed steady for a Colchester bantam mark1 800
by George Jervis
Price Not Specified - lbsc pansy
by JACK SIDEBOTHAM
Price Not Specified - Pratt Burnerd multifit chuck key.
by Tim Riome
Price Not Specified - BANDSAW BLADE WELDER
by HUGH
Price Not Specified - More "Wanted" Ads...
Get In Touch!
Do you want to contact the Model Engineer and Model Engineers' Workshop team?
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.
Digital Back Issues
Donate
Register
Log-in
Model Engineer Magazine
- Percival Marshall
- M.E. History
- LittleLEC
- M.E. Clock
ME Workshop
- An Adcock
- & Shipley
- Horizontal
- Mill
Subscribe Now
- Great savings
- Delivered to your door
Pre-order your copy!
- Delivered to your doorstep!
- Free UK delivery!
All Forum Topics > Materials > A Little Light Relief - Mine's Bigger Than Yours...............