Question about "combination" router bit

[David Buchhauser]

We are going to be cutting these parts (see attached image) from 3/4" thick soft pine. The current method is to cut the chamfer first using a V-cut bit, then the second operation uses a 1/4" flat up-cut spiral bit for the thru cut. This necessitates changing the router bit between operations. We will have three other similar parts cut with the same chamfer from the same 3/4" thick material. So - many of these parts to make.

Is there such a thing as a "combination" router bit that combines the V-cut and straight cut portions of these bits into a single 1/4" router bit so we could do both the chamfer and the thru profile cut in a single operation using a single bit?


Thanks,
David

router bit question.jpg

[Grant Wilkinson]

I've never seen a combo bit like that, but could you use a two-rail sweep in Aspire and do the whole job with a straight end mill? I think that would be possible. If that option interests you, you could put a post on the Vectric forum. There are wizards on there.

[David Buchhauser]

Thanks! I will look into that.
David

[Mark Bolton]

Can you hold the part from the center piece and use a profile tool and just cut the shape and chamfer all at once? Make a custom vacuum pod and just drop your blanks on and just blast the waste material off in a single pass or a roughing and finish?

[Mark Bolton]

https://www.toolstoday.com/v-10427-rc-2362.html

[Jim Becker]

I've not seen any tooling like your describe, David. Additionally, the feeds/speeds would likely be different for the chamfer vs the cutout, not to mention the challenge with dealing with variance in the thickness of the material.

[Mark Bolton]

The tool I linked is likely too large for the machine but single profiling that part with a single form tool would be zero issue with regards to feeds and speeds. Material thickness variability is going to bite you on the chamfer no mater what. You could have a 1/2" shank custom form tool made for probably 300 bucks if the volume of parts and time saved afforded it. Profile tool path doesnt show wasting away the material around the blank and would require a plunge tool (not worth it) but its completely doable. No idea if a good bit of scouring wouldnt turn up some sort of double chamfer profile tool that could be made to work with some lead-ins and lead-outs.

https://drive.google.com/file/d/13j7...ew?usp=sharing

[Mark Bolton]

Heres your tool in a round over from Amana. Edge profile and round over in single pass on 3/4" material. No issue to have a custom made as a chamfer though you'd likely have a small rad in the corner not a razor sharp chamfer.

https://www.toolstoday.com/v-4991-49706-cnc.html

[David Buchhauser]

The tool I linked is likely too large for the machine but single profiling that part with a single form tool would be zero issue with regards to feeds and speeds. Material thickness variability is going to bite you on the chamfer no mater what. You could have a 1/2" shank custom form tool made for probably 300 bucks if the volume of parts and time saved afforded it. Profile tool path doesnt show wasting away the material around the blank and would require a plunge tool (not worth it) but its completely doable. No idea if a good bit of scouring wouldnt turn up some sort of double chamfer profile tool that could be made to work with some lead-ins and lead-outs.

https://drive.google.com/file/d/13j7...ew?usp=sharing

Thanks Mark! The tool you used tor the sample video is what I had in mind. For a custom form tool like this, who would you recommend as a source?
David

[Mark Bolton]

Ive used http://www.totaltoolingtechnology.com/ great service but.there are many

[David Buchhauser]

Ive used http://www.totaltoolingtechnology.com/ great service but.there are many

Thanks Mark!
David