Hi,
well there is a lot to comprehend in this info. I have a big new Triton
router and will be using a 12 mm shafted bit,. I think that is about
half inch.
I can put a quarter inch Colet in for smaller bits. I do have variable
speed settings. Are you saying the smaller the bit the faster the speed
setting? Sorry if I am a bit thick.
Thanks again for all the answers so far.
Max.
On 10/04/2010 22:41, Dale Leavens wrote:
> While you won't go far wrong with a shallow 8th inch depth of cut this is
> dependent on a few variables.
>
> The power of the router. I have a big old triton which will drive an inch
> diameter bit through an 8th inch cut in the hardest wood without noticing it.
>
> The size of the bit of course. The cross sectional area increases following
> the inverse square law so, a half inch bit has four times the cross sectional
> area of a quarter inch bit and a 1 inch bit is 16 times the cross sectional
> area of a quarter inch bit. Similarly, as the outer diameter increases so the
> distance or the amount of cutting surface which passes a particular point
> increases.A one inch bit has nearly three inches of distance around the
> outside, at 30 thousand revolutions per minute that is 90 thousand inches a
> minute or about 24 inches a second compared with a quarter inch bit which
> will present more like 6 inches a second.This has not only resistance
> implications but heat generations and other concerns.
>
> Then there is the shaft size. A half inch shaft will take a lot more load
> than a quarter inch shaft, remember here the inverse square law.
>
> I am unaware of any safety recommendations for depth of bit cut probably
> because of these variables and probably several others I haven't thought of.
>
> Use load as your guide. You can probably make quarter inch depth passes or
> even a little more but judge your speed and depth by how the motor pulls
> down.Generally the bigger the bit the slower your speed both of progress and
> RPM should be if you have the luxury of variable speed.
>
> I find it helpful to blow out the cut between adjustments, be a little
> careful though, sometimes those cuttings are smoking. They can pack nearly as
> tight as the wood you are cutting and it all adds resistance to the second
> and subsequent passes.
> Hope this is helpful.
>
>
> If I was Han Solo I'd probably pet my wookie
> ----- Original Message -----
> From: Bob Kennedy
> To: [email protected]
> Sent: Saturday, April 10, 2010 7:06 AM
> Subject: Re: [BlindHandyMan] Cutting depth per cut
>
>
>
> If you are just making a round hole, go as deep as you want.
>
> If you are making a mortise type cut that means you have to move the wood
> over the bit, you can make the end cuts as deep as they need to end up. Then
> come back and cut no more than an eighth, of an inch, 5 millimeters over
> there.
>
> ----- Original Message -----
> From: Agent086b
> To: Handyman
> Sent: Saturday, April 10, 2010 3:05 AM
> Subject: [BlindHandyMan] Cutting depth per cut
>
> Hi all,
> well have just purchased my first router and router table so will have
> many questions.
> For a start.
> If I wish to make a plunge cut, with say a 12 mm diameter bit. what is
> the maximum depth I should go for a first pass?
> I am not sure if this is explaining myself correctly, so I will wait for
> the responses and modify the question if necessary.
> Thanks as always for the great help.
> Max.
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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