New Experiment day. Carbide shaper bit quarter stock??

[countryguy]

Morning everyone. The Son and I want to try a shaper experiment on 1045 on our southbend 7 I was trying to locate some 1/4 x 1/4 2 to 2.5" carbide stock to make our own cutter ends with? Q1- Are we on the right track there? I see Enco has a $50 stock but I do not want to buy that much. http://www.use-enco.com/CGI/INSRIT?PARTPG=INSRAR2&PMAKA=619-1257&PMPXNO=16719006

Just 2 or 3 2" pieces.

We have a broken 3/8" end mill we were going to try and grind down today.... thanks everyone. CG.

 

[Jim2]

Any HSS should work on a shaper. No need for that high-priced stuff. I've been using a piece of "Williams Cobalt" or some such that I got in a box with other stuff.

Here's a pic of the grind that I use most on my 7" Porter-Cable shaper.




The 5 degree top rake is achieved by holding the bit in an armstrong lathe tool-holder, but you could grind it into the tool if you don't have a tool-holder like that. I round over the side/corner with a stone or diamond file. This bit will work for roughing or finishing cuts.

Jim

 

[countryguy]

thanks! Appreciated it. Do you think the HSS would be OK to shave on 1045 steel?

 

[Dranreb]

Hi CG I think you will find Carbide is too brittle for shaper work and may snap because of the shock as the tool meets the work.

I may be proved wrong on this though.

Bernard

 

[Bishop]

I think Bernard is right, carbide won't like the interrupted cut of the shaper. I use HSS cutters for everything on my shaper from mild steel to 4140 and have never had an issue.

Shawn

 

[Redirish]

Morning everyone. The Son and I want to try a shaper experiment on 1045 on our southbend 7 I was trying to locate some 1/4 x 1/4 2 to 2.5" carbide stock to make our own cutter ends with? Q1- Are we on the right track there? I see Enco has a $50 stock but I do not want to buy that much. http://www.use-enco.com/CGI/INSRIT?PARTPG=INSRAR2&PMAKA=619-1257&PMPXNO=16719006

Just 2 or 3 2" pieces.

We have a broken 3/8" end mill we were going to try and grind down today.... thanks everyone. CG.

I have used carbide with good results by taking cuts not exceeding .005". Heavy cuts will usually result in breaking the carbide.

 

[rmack898]

HF sells a set of 1/4" indexable carbide cutters for $29. I have used them in a fly cutter with an interrupted cut and have great results with them, I don't see why they wouldn't work just as well in a shaper.
As soon as I get my shaper back together I'll give them a try, thanks for the idea CG.

 

[Jim2]

Yes, HSS will be fine on 1045. I did some shaper work on A2 without issue--just had to take lighter cuts.

Jim

 

[countryguy]

Saaaaweet! thanks everyone for the answers!