Is there such a thing as a 1/4" round shank drill bit chuck for CNC routers?
I would like to use the available drill bits I have without having to purchace CNC drill bits!
Is this a bad idea for the occasional holes I need to drill?
Thanks!
Holder or chuck for drill bits
- martin54
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Re: Holder or chuck for drill bits
A google search brings up quite a lot with a 1/2" straight shank, there may be 1/4" shank as well but didn't look to hard. No idea about using them with a CNC though
I don't tend to use the drill toolpath very much at all, most of the time I run a profile toolpath cutting inside the line with a spiral ramp. Works well but I am not machining lots of holes at the same time. Use an endmill that is larger than the radius of the hole & you won't be left with an island in the middle
I don't tend to use the drill toolpath very much at all, most of the time I run a profile toolpath cutting inside the line with a spiral ramp. Works well but I am not machining lots of holes at the same time. Use an endmill that is larger than the radius of the hole & you won't be left with an island in the middle
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- Vectric Craftsman
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Re: Holder or chuck for drill bits
You can buy collet set that will have a range of sizes to allow using a typical drill bit.
However, standard drill bits don't usually do very well in a CNC spindle because of the speed the spindle rotates - the bits are often not stiff enough to provide a sharp concentric bore.
There are solid carbide bits that do well and have a 1/4" or 1/2" shank and are sized the same and a set of imperial or metric drill indexes. But I am not familiar with sets being sold they are typically sold individually and they are not inexpensive.
However, standard drill bits don't usually do very well in a CNC spindle because of the speed the spindle rotates - the bits are often not stiff enough to provide a sharp concentric bore.
There are solid carbide bits that do well and have a 1/4" or 1/2" shank and are sized the same and a set of imperial or metric drill indexes. But I am not familiar with sets being sold they are typically sold individually and they are not inexpensive.
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Re: Holder or chuck for drill bits
Thanks for the info!
I will get the 1/4" or 1/8" shank CNC drill bits in the sizes I need.
I will get the 1/4" or 1/8" shank CNC drill bits in the sizes I need.
- ohiolyons
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Re: Holder or chuck for drill bits
I get mine from Precisebits.
I have their 1/16", 1/8" and 1/4" bits on 1/8" shanks.
Made in the USA.
When you have questions you are talking to the President of Precisebits.
Their website has loads of data too.
Top notch!
I have their 1/16", 1/8" and 1/4" bits on 1/8" shanks.
Made in the USA.
When you have questions you are talking to the President of Precisebits.
Their website has loads of data too.
Top notch!
John Lyons
CNC in Kettering, Ohio
CNC in Kettering, Ohio