Countersink Sharpening Fixture

[PJs]

Great write up, pics and the vid made it real clear, Doug. Honestly, I've never seen chips that good from a New countersink...that is Impressive...made it look like shaving butter with a scalpel! Am curious how well it cuts CRS or harder material. Love that you take that simple approach to your designs and versatility of a tool and would never have thought about the cam idea for that operations, let alone how much of a cam.

Once again I learned a bunch in 10 minutes and ever grateful for you sharing your work and the forum! Thank You!

PJ

[rossbotics]

Nice. If you keep this up I'm going to be tempted to start looking for a surface grinder! :-)
How did you create the cam?

Thanks Saltfever
I should have made a video of the cam manufacturing, it's relatively hard to explain, a visual would clear things up, I'll work on a video

Thanks Doug

[rossbotics]

nice little fixture. Something like this should be extended to do two lip drill bits. Thanks for the great video.

Thank you wizard69
It could be converted to sharpen a drill with the appropriate cam

Thank You
Doug

[Lornie]

I should have made a video of the cam manufacturing, it's relatively hard to explain, a visual would clear things up, I'll work on a video

Thanks

I too would be grateful for a video about making the cam. I cannot think of an easy way to do it.......

Thank you.... Lornie

[rossbotics]

Once again, nice work & a good video,

Thank you Metallurg33

Doug

[rossbotics]

So ingenious, well done, video explains nicely, thanks again doug

Thanks for your comment Stevohdee

Doug

[rossbotics]

Great write up, pics and the vid made it real clear, Doug. Honestly, I've never seen chips that good from a New countersink...that is Impressive...made it look like shaving butter with a scalpel! Am curious how well it cuts CRS or harder material. Love that you take that simple approach to your designs and versatility of a tool and would never have thought about the cam idea for that operations, let alone how much of a cam.

Once again I learned a bunch in 10 minutes and ever grateful for you sharing your work and the forum! Thank You!

PJ

Thank you PJs
My first attempt at creating the cutting edge relief was not so good, I originally made a spindle with an eccentric hole of .030" offset for the countersink, I could never get the timing right, so that's when I came up with the cam idea, the cam worked perfectly, for me to explain the cam making process would get pretty lengthy, a couple other members asked the same question so I'm going to make a video and post it. BTW the countersinks are made by KEO and they work just as well on steel

Thanks PJs
Doug

[cascadeadk]

Nice job Doug! will you be adding this to your plans for sale

[metric_taper]

I can't see the detail in the photo of the 0.030 cam, which I believe is the surface with a 0.030 helix.

[Lets Roger That]

Hi Doug, I made a copy of your fixture. It was fun to make and worked really well. The only thing I did different is design and 3D print the cam. I wasn't sure how to get the 0.030" helical slope machined in metal, but the plastic cam works perfectly. I made a youtube video for it on my channel and gave you credit and added a link to your channel. Take good care, Gilles