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Thread: Drillling
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29th July 2016, 07:37 AM #1Awaiting Email Confirmation
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Drillling
Hi.
In general are 'special' bit required for drilling holes (wood)?
and
for the odd hole eg for locating pins is it reasonable to use a spiral bit of the desired diameter and select drilling for the toolpath rather than do pocket cuts with a small bit?
Thanks,
Rob.
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29th July 2016, 06:13 PM #2Taking a break
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Spiral bits are perfectly fine, but the diameter will change once it's been sharpened. We have a variety of dedicated drill bits set up at work, but most people don't have that option
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31st July 2016, 04:07 PM #3
If you are only drilling holes in wood then standard drill bits will do the job fine. If you want a non standard hole then you can use a slightly smaller router bit and tell the software to pocket the hole. However, if you are still doing this in wood then the normal drill bits are also suitable. Just remember that they have a point on them, so the depth you need has to take that into account. In general, when working with timber then within a half a millimeter is fine. Wood grows and shrinks anyway, so what is perfect now will be (minutely) different in 10 minutes time.
Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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3rd August 2016, 09:31 AM #4Awaiting Email Confirmation
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Thanks...just to be clear.."If you are only drilling holes in wood then standard drill bits will do the job fine"...could you confirm that you mean standard drill bits or standard router bits please?
Regards,
Rob.
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3rd August 2016, 10:26 AM #5
Standard drill bits are fine.
You can even use brad point type bits or even spade or forstner bits.
I would tend to slow down a lot for the two latter types of bit.
I suggest that you do a few test pieces and this will immediately show you the results for these types of bits.
The main reason for using a router bit is because they are designed to cut on the sides of their flutes (and can therefore cut sideways) whilst the drill bits are usually only meant to cut with the point.
You can also use router bits in a drill but they are very hard to control because they (usually) lack a point.Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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3rd August 2016, 11:34 PM #6Taking a break
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We run our drill bits at 3000 rpm. If you can't slow it down that much, go to the lowest possible speed, but definitely don't run forstner or spade bits above 5000 - there's a serious risk of damage to the tool, work piece and your body.
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13th August 2016, 07:49 PM #7Taking a break
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