milling a 7 degree angle

[bmannell]

I am a beginner and just wanting to know how to mill a 7 degree angle using a vertical mill. I can get a 7 degree end mill cutter but I want to mill the male part of a dovetail. The only angle cutter I see you can get is smaller on the end so the angle this would cut with the vertical mill would be narrower at the top and wider at the bottom. I need the cut to make a dovetail that is wider at the top and narrower at the bottom. If this makes any sense could someone tell me what I need to make this cut???

 

[Metal Butcher]

The tool you need is a dove tail cutter. A tapered end mill will not work, if I understand you correctly.

http://grizzly.com/products/Dovetail-Cutter-3-8-x-60-/H2955

-MB

 

[bmannell]

Do they make these in 7 degree angle, the ones I see in the catalog are 45 & 60 degree only. I want to put a block of steel in the mill vise and make a pass along the side of this block making a cut that is at 7 degrees with the deeper part of the cut at the bottom portion of the block.

 

[rcmadness]

Maybe something like this would set your angle and you could clamp it down.

http://www.cdcotools.com/picture/202

 

[BenPeake]

You could make a fly cutter for this job. It's would be slow going though.

 

[Ken I]

Use a standard 30° degree cutter and swing your head 23°

Just a thought.

 

[Blogwitch]

The easy way to achieve what you are after is to use standard cutters and undercuts.

I have put a C-o-C at the bottom, and hope that explains it.


Bogs

 

[bmannell]

The easy way to achieve what you are after is to use standard cutters and undercuts.

I have put a C-o-C at the bottom, and hope that explains it.


Bogs

Thanks for the info and drawing, I'll give that a try