Gallery, Projects and General > The Design Shop

Radius Cutter

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Rob.Wilson:

--- Quote from: 75Plus on December 16, 2011, 01:38:00 PM ---Hi Nick, May I suggest that you do a search for "Ball Turner". You will find many pages of discussion on this subject as well as some neat designs.

Joe

--- End quote ---

Just beat me to it Joe  ,,,,,,,, :D

Nick ,,,,, this thread my be worth a look  http://madmodder.net/index.php?topic=3460.msg37064;topicseen#msg37064  :thumbup:


Rob

MadNick:
Beautiful :)

Many Thanks.

Nick

rleete:
I used a thin (.010") sheet of teflon between mating surfaces.  Works well, very smooth.

Fergus OMore:
I hope that there will be no undue criticisms but in Model Engineering Clearing House we have just had a surprisingly similar discussion.

I raised the point that an adjustable boring head( the main subject) could be used just as easily as a very good ball turning tool. It does require a change of tool bit but that is all.

You might want to have Two for the price of  or building one.

PeterE:
I can only agree with Fergus above. The similarity between the two tools becomes very obvious when looking at the George H Thomas designs for each: (Links to the Hemingway kit pages for each tool.)

The Boring tool:
 http://www.hemingwaykits.com/acatalog/info_HK%201030.html

and the ball turning tool:
http://www.hemingwaykits.com/acatalog/info_HK1160.html

It also becomes obvious that with different shanks and different tool bits we get a very versatile tool with much use.  :headbang:

BR

/Peter

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