U2U | Member List | Search | Photo Archive | Chat | Links | Shop
Not logged in [Login - Register]
LocostBuilders » Forum » Tools and techniques » Novice ML7 user needs advice MIG Welders & ARC Welders at MachineMart.co.uk   go to bottom
Printable Version | Subscribe | Add to Favourites
 New Topic New Poll New Reply
Author: Subject: Novice ML7 user needs advice
johnH20
Contributor






Posts 409
Registered 17/2/09
Location Essex
Member Is Offline

Photo Archive Go!
Building: Cyclone with FRP engine -now registered!
posted on 27/5/14 at 06:42 PM Reply With Quote
Novice ML7 user needs advice

Managed to buy an ML7 a couple of years ago. ( Wish I had done it 10 years ago when I retired but that is another story ). I have learned to do basic turning and boring and am now about to attempt tapers, but I aspire to make some intake trumpets with bell mouth openings. How do I do this? Do I need to grind a special tool or is there a trick to use a single point tool to execute a radius in the horizontal plane? I cannot figure this out. For info I have a 4 position turret type tool holder. TIA.
View User's Profile E-Mail User View All Posts By User U2U Member
big_wasa
Contributor






Posts 10688
Registered 9/12/04
Location spalding
Member Is Offline

Photo Archive Go!
Building: Nothing
posted on 27/5/14 at 06:57 PM Reply With Quote
If turning between centres you can offset the tailstock.



Or you can use the compound slide.




For the radius you could use a ball turning attachment .

[Edited on 27/5/14 by big_wasa]
View User's Profile View All Posts By User U2U Member
robinj66
Contributor






Posts 768
Registered 14/5/06
Location Hawkinge (nr Folkestone) Kent
Member Is Offline

Photo Archive Go!
Building: Robin Hood S7
posted on 27/5/14 at 07:04 PM Reply With Quote
Have a look at this series of videos - Tubelcain - I know the lathe is an Atlas but it's very similar to yours.

Also this may be helpful
View User's Profile View All Posts By User U2U Member
theprisioner
Contributor






Posts 1178
Registered 27/1/12
Location EH49 - Scotland
Member Is Offline

Photo Archive Go!
Building: Austin Seven Special/Westfield Sylva J15
posted on 27/5/14 at 09:37 PM Reply With Quote
I thought trumpets spun using a bending technique (tool) while spinning the job?




http://sylvabuild.blogspot.com/

http://austin7special.blogspot.co.uk/
View User's Profile Visit User's Homepage View All Posts By User U2U Member
davidimurray
Contributor






Posts 813
Registered 25/1/10
Location South Wales
Member Is Offline

Photo Archive Go!
Building: Haynes Roadster
posted on 28/5/14 at 08:15 AM Reply With Quote
Have a look for a "Ball Turning Attachment"




Gallery 1 http://www.facebook.com/media/set/?set=a.116893465324.130778.601005324
Gallery 2 http://www.facebook.com/media/set/?set=a.245243755324.181913.601005324&l=a9831a9319
Gallery 3 http://www.facebook.com/media/set/?set=a.440671625324.232627.601005324&l=3f0d42c523
Gallery 4 http://www.facebook.com/media/set/?set=a.490098255324.297598.601005324&l=efb083b7df
Gallery 5 http://www.facebook.com/media/set/?set=a.10150244028550325.366987.601005324&l=583fd5cd3a
Gallery 6 http://www.facebook.com/media/set/?set=a.10150550640070325.430417.601005324&type=3&l=fe779b358c
Duratec Engine Swap https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f " target="_blank"> https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f
View User's Profile View All Posts By User U2U Member
designer
Posting Freak






Posts 3423
Registered 16/11/06
Location West Yorkshire
Member Is Offline

Photo Archive Go!
Building:

posted on 28/5/14 at 08:16 AM Reply With Quote
Trumpets are a lot better spun rather than turned. And a lot quicker.
View User's Profile E-Mail User Visit User's Homepage View All Posts By User U2U Member
johnH20
Contributor






Posts 409
Registered 17/2/09
Location Essex
Member Is Offline

Photo Archive Go!
Building: Cyclone with FRP engine -now registered!
posted on 28/5/14 at 11:23 AM Reply With Quote
Well, I need to look into the dark art of spinning as well, another skill I do not have. Thanks for the advice and links folks.
View User's Profile E-Mail User View All Posts By User U2U Member
big_wasa
Contributor






Posts 10688
Registered 9/12/04
Location spalding
Member Is Offline

Photo Archive Go!
Building: Nothing
posted on 28/5/14 at 11:38 AM Reply With Quote
Well if you make a former from alloy you could then lay them up in carbon fibre.
View User's Profile View All Posts By User U2U Member
r1_pete
Contributor






Posts 5779
Registered 15/5/07
Member Is Offline

Photo Archive Go!
Building: 70s Bikes
posted on 28/5/14 at 11:53 AM Reply With Quote
This may help with your trumpet design :

Trumpets
Trumpets
View User's Profile E-Mail User Visit User's Homepage View All Posts By User U2U Member
Uphill Racer
Builder






Posts 147
Registered 12/10/06
Member Is Offline


Building: s/seater race car NGTCRV8
posted on 3/6/14 at 12:07 AM Reply With Quote
quote:
Originally posted by big_wasa
Well if you make a former from alloy you could then lay them up in carbon fibre.


You could also use the former to swage them, that is how i made mine.
View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


 LocostBuilders » Forum » Tools and techniques » Novice ML7 user needs advice go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.