By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Cutting copper tube square

All Topics | Latest Posts

Search for:  in Thread Title in  
Hopper21/12/2020 09:34:36
avatar
7881 forum posts
397 photos
Posted by larry phelan 1 on 14/11/2020 16:07:47:

This might be a little off topic, but I thought it might be worth a mention.

Many years ago, I saw a good trick for marking a pipe/tube at an angle, the tube in question being 8or 9 inches/

What he did was to spread a handful of soot on the surface of a barrel of water and having marked the pipe both sides, where it need to meet a flat plate, he lowered it into the water until both marks met the surface, then took it out.

The result was a clear black line, showing exactly where to cut. So simple !surprise

Haha. Brilliant. Maybe those old guys did know a trick or two after all!

Another trick to mark pipes square that old boilermakers used was the previously mentioned wrapping a bit of paper around the pipe, but using a readily available strip of emery tape as the piece of paper. The 2" wide stuff works well for full sized pipework diameters.

Edited By Hopper on 21/12/2020 09:38:31

ega21/12/2020 10:33:06
2805 forum posts
219 photos

The technique illustrated in my picture is aimed more at avoiding burrs than squareness although this should follow:

cuttingpipe.jpg

I have not included the accompanying text from Cliff Bowers' "Book of the Lathe" since the method seems self-explanatory.

The off-cut would, of course, be retained on the leading toolbar.

Edited By ega on 21/12/2020 10:33:48

noel shelley21/12/2020 11:14:14
2308 forum posts
33 photos

A length of shim steel or brass works very well held in place with a jubilee clip on round tube. Using the paper trick also works on box section as well. Noel

Roger Best21/12/2020 21:37:24
avatar
406 forum posts
56 photos

smiley

The reason for not using a pipe cutter is that they dent the end of the pipe, Fine for inserting in plumbing fittings but no good to go round a boiler end plate. OK if the end plate is external though, although that raises the obvious question.

So for an internal end plate the bung method is best.

John Reese21/12/2020 23:13:29
avatar
1071 forum posts

A normal pipe cutter will roll the cut edges inward. In many cases that would ruin the pipe for its intended use.

FMES22/12/2020 07:33:00
608 forum posts
2 photos

Clamping very gently in lathe and going at it with a bench grinder by hand is perfectly acceptable also.

Woody.

Non- ferrous on a grinding wheel? - shame on you!

Brian Morehen22/12/2020 08:49:38
avatar
191 forum posts
11 photos

A jubilee clip on the pipe will give you a guide for your hacksaw for nearly the whole cut then remove the clip for the last bit you need to cut and take your time good luck.

Bee.M

All Topics | Latest Posts

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!

Find Model Engineer & Model Engineers' Workshop

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
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Subscription Offer

Latest "For Sale" Ads
Latest "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

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate