Tool making question

[RSG]

Hi, I'm new here and have a question about making a tool to help speed up a process for small acrylic handles. I have drawn a diagram that I think will work. The tool will need to drill a hole, bore a pocket and radius an outside corner all at once. I would appreciate it if I could get some criticisms on the design and a suggestion on metal choice. Keep in mind I don't work with many metals, mostly aluminum. I was hoping to be able to use brass since it's such a small tool and will only be used for acrylic. The drill bit will just be a HSS #14 bit.

I appreciate any info you have to offer.

RSG

[samu]

maybe you should put 2 radius cutter 180 deg spaced cause with just one, i think the #14 drill will flex and generate vibration that will afect surface finish.
Acrylique is a hard plastic, tool steel will be a better choice.

[Geof]

Tool steel certainly is the better choice because acrylic needs a very sharp cutting edge.

One possible problem will be getting the plastic too hot, drills get hot very easily and if you combine the heat from drilling with the heat from boring and radiusing the end it may be too much.

[christinandavid]

Interesting concept, just make sure you put some clearance/flutes on the pocketing bit for swarf to escape.

DP

[RSG]

Thanks for the comments guys, I'll take the advice given. Now I just have to figure out how to make the cuts necassary to make it work.

As for heat generation, I thought about it and I use a small atomizer with water for cooling. If I drill the hole first that might take care of the initial heat build up before I make the final pass for the pocket and radius.