Q. for Scott P About Bits

[Brady Watson]

You'll get much better results with a ball end mill with a diameter similar to the flat end on the engraving bit. In this case a 1/64" ball would be pretty close.

To really illustrate the differences visually, scale up everything 10x. Scale up the conical tool with flat to .120 (1/8" close enough) and model 10x. Then run a sim with a .120 or 1/8" square end mill (same result as conical tool because 3D only cares about the tip) and then run a toolpath with the same size ball end mill. The results will be clear.

Another reason you don't want to run a squared off tool compared to a ball when 3D finishing is that it can cause gouging on the surface...and then of course there is the time factor due to the tight stepover. A ball run @ 10% will look better than an engraving tool at 5%.

-B

[Davo]

Thanks for the tips and info guys

I've been using the 1/8" tapered ball nose at 2.5ips on 13k with 8% in 3/4" oak

I've been pleased with the results and time

Usually 10"-12" oval pieces from the clip art from aspire take me an hour or less with Brady's new settings

[scottp55]

Thanks Brady...Will do.
But I haven't even bought a 32'nd Ball Mill Yet
Money's still tight, and everything I buy has to be duplicated for the Northern Desktop.
3D buttons are time consuming so not really bread and butter for us.
The engraving bits we can use for almost everything.
Just playing with what I have.
I'll scope out the sims.
Thanks again,
scott

[gerryv]

Hi Will,
Not at this point as I've committed to including them with the whole pkg. to a couple of fellows interested in my machine. I'd be happy to let you know if I decide to break up my offering but would prefer not to do that as yet. Thanks kindly for asking.
Best, Gerry