By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Free cutting mild steel

All Topics | Latest Posts

Search for:  in Thread Title in  
Glyn Davies17/06/2019 10:40:09
121 forum posts
29 photos

I want to make some grinding wheel adapters for my universal cutter grinder, which involves a lot of turning 50mm bar down to 20mm. Much of the BMS I've bought in the past does not really turn well using HSS tools on my little Myford so I'd like to get some mild steel that is truly free cutting.

Should I be asking for EN1a Leaded as being the free-est cutting BMS that money can buy?

ega17/06/2019 10:56:23
1713 forum posts
150 photos

You could follow the advice for the Quorn and use Loctite to combine the components, perhaps.

If there is a flange next to a paper "blotter" I would recommend (free-cutting) stainless steel to avoid rusting.

colin hawes17/06/2019 10:57:15
504 forum posts
18 photos

Yes....and make sure you keep the tools sharp. Colin

SillyOldDuffer17/06/2019 11:03:36
5780 forum posts
1230 photos

Simple answer is 'yes', but I suspect there may be more to it. I'd expect a little Myford and HSS to cope reasonably well with BMS. Although BMS isn't wonderful, it shouldn't be awful. Usually it's the finish that suffers.

Have to say the first time I turned Free-cutting I was delighted - it does what it says on the tin. However, if Free-cutting doesn't fix the problem, ask again. There are several reasons why a lathe might struggle other than the metal.

Dave

Martin Kyte17/06/2019 11:07:07
avatar
1842 forum posts
33 photos

GLR Kennions free cutting machines really well.

Martin

Hopper17/06/2019 11:23:31
avatar
4530 forum posts
94 photos
Posted by Glyn Davies on 17/06/2019 10:40:09:

... turning 50mm bar down to 20mm. Much of the BMS I've bought in the past does not really turn well using HSS tools on my little Myford ..

That's about six cuts of about 2.5mm deep each. Easy peasy on a Myford with HSS. Sharpen your toolbit as per LH Sparey's instructions for knife tool in "The Amateur's Lathe".

Ian S C17/06/2019 15:44:59
avatar
7468 forum posts
230 photos

I find no difficulty turning hot rolled "mild Steel"(no spec) with a fairly worn Box-Ford A using HSS or carbide tools.

Ian S C

Glyn Davies17/06/2019 17:20:06
121 forum posts
29 photos

Thanks for the replies - I'll grind a right hand knife tool with 55 degrees top rake and give it a go with whatever EN1a steel I find.

I think a 100 thou depth of cut is going to make it chug a bit though!

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

Latest Forum Posts
Support Our Partners
Warco
ChesterUK
emcomachinetools
Eccentric July 5 2018
Allendale Electronics
cowells
Eccentric Engineering
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