I have researched this topic but cannot find a simple answer.
If I have a wood board and want to put a 45 degree bevel on the edge that could be matched to another wood board with a 45 degree bevel (thereby creating a miter joint), how can I do that?
If I draw a rectangle in Carbide Create, couldn’t I draw a contour line along one side of the rectangle and then use a 90 degree V-bit to create the bevel?
Yes, sort of.
See:
which led to:
Thanks Will.
Can the 301 V-bit be used on any stock thickness (1/2”, 3/4”), or does the 301 limit you to a specific thickness?
Yes, they can be used for different thickness material.
However your outcome will be different and also depends on your intended cut profile? In your example you can use it to do that with a caveat that it depends on your stock thickness as to weather you can cut in a single pass or multiple passes with the associated offset (step over) to make a the 45 Deg bevel for a miter that can be joined as you want.
@WillAdams provides a good resource for your question, you can also run some test cuts with the bit on scrap stock to learn how use the 45 Deg bit to get your desired effect. Running these tests will provide you useful insights on the cnc and your tool path design going forward.
It limits you to a max thickness unless you draw the cut up in profile and set up multiple toolpaths to the necessary depths.
Here’s an example of how to do that:
That said, that Carbide 3D would add a 90 degree version of the RC-1148 60 degree insert V endmill to our library is one of many wishes I’ve had over the years.
https://www.amanatool.com/rc-1142-insert-v-groove-90-deg-x-3-4-x-1-4-inch-shank-cnc-router-bit.html
Now that’s a serious V-bit……. I’ll have to order one of these in the future! Thanks for the reference.
I just wish it was made with an 8mm (5/16") shaft.
The bit is .5" so for flat work you should limit to .5". If you go deeper you will get flat sides.
Why do you say that? Do you feel the 1/4” shank is too conservative for that big of a bit?
I feel that such larger tooling would benefit from the added rigidity.
There are some of us using 5/16” and 8mm diameter shanks vs 1/4” when we can due to being more rigid.
With that said, would it be okay to use such a bit with the 65mm VFD kit on a Shapeoko 5 Pro?
So long as the inserts are installed correctly so that the tool is well-balanced and used at feeds and speeds within the manufacturer’s guidelines in a collet which has low enough runout to allow the tool to spin without undue vibration and cutting forces are kept within what will allow the tool to cut as expected, it should be fine.
I wonder whether a kind of cutting edge instead of a scraper like in the usual v-carve bits would be better.
As example: I am very happy with such a bowl bit
Accordingly with the first bit I get chips, while with the “scrapers” I get a lot of dust. And: the cutter has 3 flutes, gives a nice smooth surface.
Are those cutting edge V-carve bits available compared to the scraping edge ones that are available everywhere? And where to get from?
Good question.
I believe that there is a lot of untapped potential in tool geometry, including shaft diameter.
The Woodpeckers folks have begun to do router bits:
and 8mm shank tooling is popular w/ the Shaper crowd, and I believe Datron makes some tooling in that size which seems to be well-suited to our machines, and of course, the 3/8" ER-16 collet on the updated 65mm VFD opens up that size as well, and I’ve been surprised not to hear more about 1/2" shank tooling from the folks w/ 80mm VFDs.
the ultra-shear bits are US-made, and have 1/4" shanks, 3-flute V-carve with a “blade” like cutting edge: piece of art if one asks me. Will probably be good to carve edge grain inlays.
However: Thank you for the referral!
LOL!! Just when you think only Siri and Alexa are listening………
Just curious, I have read about miter fold boxes, and somewhere (can’t find it now) actually suggested using a 91° bit. I think the point was to get the fold to actually fit flush you needed to take slightly more than 90°.
Does any have expwy with using a 91° bit for this purpose?
The link I posted has the info that states just that, >90 Deg bit.
I was able to make a 90 degree tool work, but I suspect the greater than that angle tool from the link would work better/more easily.
