Forgot the trick

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Forgot the trick

Postby M Farris » Mon May 21, 2018 10:12 pm

Hi all,
It has been a long time since I have posted and I hated missing McGrew's camp this year. Since I left my job a little over a year ago and went full time with the CNC it has been a little busy, but great.

I have used this trick before and thought I had it wrote down, but who knows. I am cutting a shallow pocket in a panel to accept a carving. I will be using the carving boundary by offsetting outwards once, inwards twice, and outwards once by the diameter of the bit...... or 1/2 the diameter of the bit? That is what I have forgotten. This allows for the bit and creates a tight fit. A little help please.

Thanks,
Mark Farris
DigiFab LLC
Gainesville FL
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Re: Forgot the trick

Postby Rcnewcomb » Tue May 22, 2018 4:24 am

Offset outward by the radius of the bit
Offset inward by the diameter of the bit
Offset outward by the radius of the bit
- Randall Newcomb
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Re: Forgot the trick

Postby Adrian » Tue May 22, 2018 7:29 am

There's also a gadget that does it as well which can make things a bit easier if it's something you do a lot - viewtopic.php?f=47&t=27848
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Re: Forgot the trick

Postby M Farris » Tue May 22, 2018 12:37 pm

Thank you, much appreciated. I have to learn to write this stuff down.

Mark
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Re: Forgot the trick

Postby Ms Wolffie » Mon Aug 13, 2018 3:00 pm

I am trying to get my head around this:
1 step to the left
2 steps to the right
1 step to the left.
Doesn't that get you right back where you started? :?:
Cheers
Wolffie

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Re: Forgot the trick

Postby Adrian » Mon Aug 13, 2018 3:03 pm

Yes but each time it's rounding the corners by the radius specified so you need to do it that way to get the inside and outside corners converted.
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Re: Forgot the trick

Postby adze_cnc » Mon Aug 27, 2018 7:10 pm

For a single rectangle the fillet tool can be just as quick without having to remember to alter the offset radii and direction of offet.
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Re: Forgot the trick

Postby dealguy11 » Mon Aug 27, 2018 8:00 pm

Can someone remind me why this is a better approach than using an inlay toolpath? This is a practical question, not snark, as I am about to do this exact thing in expensive signboard and I would prefer not to mess it up.
Steve Godding
D&S Artistic Woodworking http://www.dsartisticwood.com
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Re: Forgot the trick

Postby Rcnewcomb » Mon Aug 27, 2018 8:06 pm

Can someone remind me why this is a better approach than using an inlay toolpath

Because I remember and understand the offset method, and I've not tried the inlay toolpath to do the same thing.
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