[HELP] Shaper Tool Holder Position

[KellisRJ]

(01-14-2024, 03:47 AM)Dr Stan Wrote:

(11-30-2023, 01:59 PM)KellisRJ Wrote: Hello, thanks in advance to any who can help.

In this thread, http://www.metalworkingfun.com/thread-791-page-4.html

I read Stevec 's post regarding tool placement in a shaper clapper, described from a 90 degree position. Can this also be called  the tool holder leading or following the clapper?

From your comment, it sounds like setting tool holder behind the clapper head is generally the best practice to prevent the tool digging into the work. Do I have this correct?

Any other general "rule of thumb" to share, I would deeply appreciate.

Ron

I recommend you search for "Machinery Repairman 2 & 3" the training manual for the US Navy's MR's or machinists as they are normally called. It has a section on shapers and how to grind their tools. I learned how to run a shaper when I went to the MR A School and later learned how to run a planner while onboard the USS Samuel Gompers AD-37, a repair ship. BTW, they are the only machines I know of that can produce a flat knurl. Also great for making blind internal dovetails.

 Thanks, what a great resource! The clearest explanation of tool faces I have ever read, and I have read many! Page 6-12 (page number not scanned properly): "Notice that there are two relief angles and two rake angles and that the angle of keenness is formed by cutting a rake angle and a relief angle." From something I read decades ago, "Look at the rake of her bow." has stuck with me, helping me to visualize that rake is simply an angle. For others, a proper definition is  "Rake may be defined as the angle the ship’s stem makes with the waterline." The stem is the most forward part of a ship’s bow.